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Jefferson County, KY Weather And Climate Synopsis

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Weather Summary County Ag Weather Advisory Hourly Observations Nowcast 7 Day Forecast Medium & Long Range Outlook
Precipitation Report Kentucky Climate Summary GIS Estimates Almanac Precision Ag., Lawn & Garden Forecast Historical Facts




Soil Moisture Anomaly Loop



Current Spraying Conditions
Also see:



A joint service of the UK Ag Weather Center and the National Weather Service.
 


Updated Thursday Evening, December 9, 2021


Severe weather on the table 


It has been a rather active weather pattern to start December. Through the 8th, the
state has averaged 1.39 inches. Attention now turns to another round of showers and 
storms tomorrow and Saturday. Altogether, another half to 1.5 inches will be on the
table. Coverage will start tomorrow scattered in nature. Highs will jump into the 60s
across much of the area behind breezy southerly winds. Shower/storm coverage and
intensity then increases tomorrow night and into Saturday morning. A line of storms is expected with damaging
winds as the main threat, but tornadoes also very much possible. Heavy rain also presents
a flooding threat, especially for low lying areas. Now is the time to get animals out
of those spots. Bottom line, this will present an overnight threat, so please have
a way to get warning (highly suggest a NOAA Weather Radio).


After a brief cool down for the latter half of the weekend, temperatures go on the uphill
climb next week. Outlooks hint the warm air will hang around the area through the third
full week of December. Any additional rain chances look to hold off until late workweek.

USDA's Ag Weather:National Ag. Weather Outlook, International Ag. Weather Summary , Next Weather Event?
Current Surface Map, Regional, Composite, TWC, Yesterday's Highs, Lows ,
Upper Air

Regional Hourly Observations For JEFFERSON County, Kentucky
Issued at 1100 PM EDT MON MAY 23 2022
 
NORTH CENTRAL KENTUCKY
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LOUISVILLE/SDF CLOUDY    63  51  65 NE9       30.17S                  
LOUISVILLE/LOU CLOUDY    62  51  67 NE5       30.17S                  
FORT KNOX      PTCLDY    58  50  76 NE7       30.15S

KY Round-up, Current Temperatures, Dewpoint, Rh, Wind, Regional Obs., Station Model, Surface 4-Panel, NWS Louisville
Meteograms: Paducah , Evansville , Bowling Green , Hopkinsville , Frankfort , Louisville , Lexington , Covington , Jackson , London , Shelby Co. Weather , Spindletop Research Weather Station , Woodford Co. Research Weather Station , About Meteograms

Current Agriculture, Lawn & Garden Weather Conditions in Kentucky
Based on observations at 1100pm EDT, Monday May 23, 2022

Across Kentucky...temperatures are near 62 degrees west, near 58 degrees central, and near 55 degrees east. Current sky conditions are clear west, cloudy central, and cloudy east. In the west, relative humidity is near 64%, and the dew point is near 50 degrees. In the central part of the state, relative humidity is near 86%, and the dew point is near 54 degrees. In the east, relative humidity is near 89%, and the dew point is near 52 degrees. Current drying conditions are fair west, poor central, and poor east. The livestock heat stress category is no stress west, no stress central, and no stress east. Winds are from the east at 7 mph west, where conditions are favorable for spraying. Winds are from the north at 5 mph central, where conditions are favorable for spraying. Winds are calm east, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 63 degrees at Louisville International. The lowest temperature is 55 degrees at Jackson.

List of Agriculture, Lawn & Garden Weather Observations in Kentucky

Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this county will these
forecasts be issued. Currently, there is no short term forecast in effect.

UKAWC Radar, NWS Radar (NEW!), SPC Radar, Regional Radar, NEXRAD, LSI Heat Index
Hazardous Weather Outlook For JEFFERSON County, Kentucky
Issued at: Mon May 23 15:31:10 EDT 2022 

English, Tell City, Corydon, New Albany, Jeffersonville, Lewisport, 
Hawesville, Hardinsburg, Brandenburg, Hartford, Leitchfield, 
Elizabethtown, Shepherdsville, Louisville, La Grange, Bedford, 
Milton, New Castle, Shelbyville, Frankfort, Georgetown, Cynthiana, 
Taylorsville, Lawrenceburg, Versailles, Lexington, Paris, Carlisle, 
Bardstown, Springfield, Harrodsburg, Nicholasville, Winchester, 
Hodgenville, Lebanon, Danville, Lancaster, Richmond, Morgantown, 
Brownsville, Horse Cave, Greensburg, Campbellsville, Liberty, 
Stanford, Russellville, Bowling Green, Franklin, Providence, 
Scottsville, Glasgow, Tompkinsville, Edmonton, Columbia, Jamestown, 
Burkesville, and Albany
330 PM EDT Mon May 23 2022 /230 PM CDT Mon May 23 2022/

This hazardous weather outlook is for portions of south central
Indiana and Central Kentucky.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

A few thunderstorms Wednesday into Wednesday evening could be strong
to severe with locally gusty winds. Thunderstorm chances will
continue on Thursday, but strong storms appear less likely. 

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed Wednesday.

&&

More information, along with other weather, hydrological and
climate information can be found, at weather.gov/louisville.

NWS Severe Weather Map , Convective Outlook

RDF forecast not available NEW NWS Experimental Weather Activity Planner: West, Central, East
NWS Experimental Point Forecasts (5 km x 5 km grid for Kentucky): West, Central, East
JEFFERSON County, Kentucky Agriculture, Lawn & Garden Weather Advisory

Updated: 310 AM EST THU NOV 12 2009

TODAY (6AM-5PM)

Max Temperature...........................61 degrees.
Precipitation (liq. eq. )...................0.00 inches (No rainfall).
Precipitation area .........................0% of the county expected.
Dewpoints.......................................29 to 34 Degrees.
Min RH (Relative Humidity).........37%.
Wind Speed....................................4 to 10 mph
Winds@3 PM..................................northeast at 10 mph
Spraying Conditions....................favorable
Sky Conditions @9 AM ...............mostly sunny.
RH < 50%........................................ for 7 hours
RH > 80%.........................................for 0 hour
No. of Hours Temp <=32 .............0
No. of Hours Temp <= 20 .............0
No. of Hours Temp <= 0 ...............0

The high today (6am-5pm) in Jefferson county, is expected to be near 61 degrees. No rainfall is expected. Temperature will range from near 39 to near 60 degrees. Dewpoints will range from 29 to 34 degrees. These dewpoints will combine with today (6am-5pm)'s temperatures resulting in relative humidity minimum of 37%. Skies will be mostly sunny at 9 AM and mostly sunny at 3 PM. Wind speed will range from 4 to 10 mph during the period. Winds at 3 PM will be out of the northeast at 10 mph, which is favorable spraying conditions in rain-free areas. Relative humidity will be less than 50% for 7 hours and greater than 80% for 0 hour

TONIGHT (6PM-5AM)

Min Temperature...........................38 degrees.
Precipitation (liq. eq. )...................0.00 inches (No rainfall).
Precipitation area .........................0% of the county expected.
Dewpoints.......................................near 34 Degrees.
Max RH (Relative Humidity)........76%.
Wind Speed....................................2 to 8 mph
Winds@3 AM..................................northeast at 3 mph
Spraying Conditions....................favorable
Sky Conditions @12 AM .............clear.
Sky Conditions @3 AM ...............clear.
RH < 50%........................................ for 1 hour
RH > 80%.........................................for 0 hour
No. of Hours Temp <=32 .............0
No. of Hours Temp <= 20 .............0
No. of Hours Temp <= 0 ...............0

The low tonight (6pm-5am) in Jefferson county, is expected to be around 38 degrees. No rainfall is expected. Temperature will range from near 41 to near 53 degrees. Dewpoints will be near 34 degrees. These dewpoints will combine with tonight (6pm-5am)'s temperatures resulting in relative humidity maximum of 76%. Skies will be clear at 12 AM and clear at 3 AM. Wind speed will range from 2 to 8 mph during the period. Winds at 3 AM will be out of the northeast at 3 mph, which is favorable spraying conditions in rain-free areas. Relative humidity will be less than 50% for 1 hour and greater than 80% for 0 hour

TOMORROW (6AM-5PM)

Max Temperature...........................64 degrees.
Precipitation (liq. eq. )...................0.00 inches (No rainfall).
Precipitation area .........................0% of the county expected.
Dewpoints.......................................34 to 42 Degrees.
Min RH (Relative Humidity).........41%.
Wind Speed....................................2 to 5 mph
Winds@3 PM..................................southeast at 3 mph
Spraying Conditions....................favorable
Sky Conditions @9 AM ...............mostly sunny.
Sky Conditions @3 PM ...............mostly sunny.
RH < 50%........................................ for 5 hours
RH > 80%.........................................for 2 hours
No. of Hours Temp <=32 .............0
No. of Hours Temp <= 20 .............0
No. of Hours Temp <= 0 ...............0

The high tomorrow (6am-5pm) in Jefferson county, is expected to be near 64 degrees. No rainfall is expected. Temperature will range from near 41 to near 64 degrees. Dewpoints will range from 34 to 42 degrees. These dewpoints will combine with tomorrow (6am-5pm)'s temperatures resulting in relative humidity minimum of 41%. Skies will be mostly sunny at 9 AM and mostly sunny at 3 PM. Wind speed will range from 2 to 5 mph during the period. Winds at 3 PM will be out of the southeast at 3 mph, which is favorable spraying conditions in rain-free areas. Relative humidity will be less than 50% for 5 hours and greater than 80% for 2 hours

TOMORROW NIGHT (6PM-5AM)

Min Temperature...........................46 degrees.
Precipitation (liq. eq. )...................0.00 inches (No rainfall).
Precipitation area .........................0% of the county expected.
Dewpoints.......................................42 to 44 Degrees.
Max RH (Relative Humidity)........89%.
Wind Speed....................................2 to 3 mph
Winds@3 AM..................................south at 2 mph
Spraying Conditions....................favorable
Sky Conditions @12 AM .............mostly clear.
Sky Conditions @3 AM ...............mostly clear.
RH < 50%........................................ for 0 hour
RH > 80%.........................................for 3 hours
No. of Hours Temp <=32 .............0
No. of Hours Temp <= 20 .............0
No. of Hours Temp <= 0 ...............0

The low tomorrow night (6pm-5am) in Jefferson county, is expected to be around 46 degrees. No rainfall is expected. Temperature will range from near 47 to near 59 degrees. Dewpoints will range from 42 to 44 degrees. These dewpoints will combine with tomorrow night (6pm-5am)'s temperatures resulting in relative humidity maximum of 89%. Skies will be mostly clear at 12 AM and mostly clear at 3 AM. Wind speed will range from 2 to 3 mph during the period. Winds at 3 AM will be out of the south at 2 mph, which is favorable spraying conditions in rain-free areas. Relative humidity will be less than 50% for 0 hour and greater than 80% for 3 hours

72 HOUR SUMMARY

The temperature is expected to be in the range from 38 degrees and 67 degrees. Dewpoints will range from 29 to 47 degrees. No measurable precipitation is expected.


Ag. Weather Forecast Parameter Maps:Spraying Conditions , Dewpoint Temperatures, Livestock Heat Stress

Extended Digital forecast not available
Current FORECAST not available TWC Forecast, NWS Maps, Fire Danger, Day 1 Precip, Day 2, 5 Day Total, Days 1-5
NGM 60 Hr Forecast Meteograms: Paducah , Evansville , Bowling Green , Hopkinsville , Frankfort , Louisville , Lexington , Covington , Jackson , London, All Kentucky Hourly Model Guidance, About NGM Forecast Meteograms
Kentucky Agricultural Weather Medium-Range Outlook (Based on the MEX Model)

MEDIUM RANGE AG FORECAST:

- Click here for Graphical Ag. Weather Forecast -

WEDNESDAY :
Highs across the state will range from 93 West and 90 Central, to 87 East. Dewpoints will range from 73 to 74 West, 72 to 71 Central, and 67 to 69 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 40 % of the area West, 0.10-0.24 inches over 60 % of the area Central, and 0.00-0.01 inches over 40 % of the area East should be expected. Lows Wednesday will fall to 72 West, 75 Central, and 69 East. Skies throughout the day will start out partly cloudy and end partly cloudy in the West, start partly cloudy and end partly cloudy Central, and start out partly cloudy and end partly cloudy East. The maximum livestock stress category will be danger West, danger Central, and danger East. There will be 29 corn growing degree days West, 30 Central, and 28 East. Wind speeds in the morning and afternoon will be around 3 and 4 mph , respectively, West, 6 and 6 mph Central, and 0 and 0 mph East.

THURSDAY :
Highs across the state will range from 91 West and 91 Central, to 86 East. Dewpoints will range from 73 to 73 West, 72 to 71 Central, and69 to 70 East throughout the day. Rainfall amounts of 0.01-0.09 inches over 40 % of the area West, 0.01-0.09 inches over 50 % of the area Central, and 0.01-0.09 inches over 60 % of the area East should be expected. Lows Thursday will fall to 73 West, 76 Central, and 69 East. Skies throughout the day will start out partly cloudy and end partly cloudy in the West, start partly cloudy and end partly cloudy Central, and start out partly cloudy and end partly cloudy East. The maximum livestock stress category will be danger West, danger Central, and danger East. There will be 30 corn growing degree days West, 31 Central, and 28 East. Wind speeds in the morning and afternoon will be around 3 and 6 mph , respectively, West, 6 and 6 mph Central, and 0 and 2 mph East.

FRIDAY :
Highs across the state will range from 86 West and 91 Central, to 85 East. Dewpoints will range from 71 to 70 West, 72 to 70 Central, and 69 to 70 East throughout the day. Rainfall amounts of 0.25-0.49 inches over 60 % of the area West, 0.10-0.24 inches over 60 % of the area Central, and 0.10-0.24 inches over 60 % of the area East should be expected. Lows Friday will fall to 72 West, 75 Central, and 70 East. Skies throughout the day will start out partly cloudy and end cloudy in the West, start partly cloudy and end cloudy Central, and start out partly cloudy and end partly cloudy East. The maximum livestock stress category will be danger West, danger Central, and no stress East. There will be 29 corn growing degree days West, 30 Central, and 28 East. Wind speeds in the morning and afternoon will be around 4 and 7 mph , respectively, West, 6 and 8 mph Central, and 0 and 1 mph East.

SATURDAY :
Highs across the state will range from 86 West and 86 Central, to 81 East. Dewpoints will range from 67 to 66 West, 68 to 65 Central, and68 to 67 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 20 % of the area West, 0.10-0.24 inches over 50 % of the area Central, and 0.50-0.99 inches over 80 % of the area East should be expected. Lows Saturday will fall to 67 West, 72 Central, and 68 East. Skies throughout the day will start out partly cloudy and end clear in the West, start cloudy and end cloudy Central, and start out cloudy and end cloudy East. The maximum livestock stress category will be no stress West, no stress Central, and no stress East. There will be 26 corn growing degree days West, 29 Central, and 24 East. Wind speeds in the morning and afternoon will be around 8 and 14 mph , respectively, West, 6 and 15 mph Central, and 1 and 3 mph East.

SUNDAY :
Highs across the state will range from 87 West and 86 Central, to 79 East. Dewpoints will range from 65 to 67 West, 63 to 61 Central, and 63 to 63 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 10 % of the area West, 0.00-0.01 inches over 20 % of the area Central, and 0.00-0.01 inches over 40 % of the area East should be expected. Lows Sunday will fall to 66 West, 68 Central, and 64 East. Skies throughout the day will start out clear and end clear in the West, start partly cloudy and end partly cloudy Central, and start out cloudy and end cloudy East. The maximum livestock stress category will be danger West, no stress Central, and no stress East. There will be 26 corn growing degree days West, 27 Central, and 22 East. Wind speeds in the morning and afternoon will be around 13 and 6 mph , respectively, West, 15 and 15 mph Central, and 3 and 4 mph East.

MONDAY :
Highs across the state will range from 90 West and 87 Central, to 82 East. Dewpoints will range from 68 to 69 West, 65 to 64 Central, and 63 to 66 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 20 % of the area West, 0.00-0.01 inches over 20 % of the area Central, and 0.00-0.01 inches over 40 % of the area East should be expected. Lows Monday will fall to 68 West, 69 Central, and 64 East. Skies throughout the day will start out partly cloudy and end partly cloudy in the West, start partly cloudy and end partly cloudy Central, and start out partly cloudy and end partly cloudy East. The maximum livestock stress category will be danger West, no stress Central, and no stress East.There will be 27 corn growing degree days West, 28 Central, and 23 East. Wind speeds in the morning and afternoon will be around 4 and 8 mph, respectively, West, 12 and 10 mph Central, and 2 and 1 mph East.

Raw Data: MEX(west), MEX(central), MEX(east)

* NOTE: See specific site Ag Wx Data and Summary files for further information.

Graphic Regional Ag. Weather Outlook, Tabular data for the Medium Range Outlook

Medium & Long Range Outlook For Kentucky 
                             KENTUCKY                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                MAY 29-JUN 2 MAY 31-JUN 6    JUN       JUN-AUG                      
                 -----------  -----------  --------  ---------
   Temperature:      Above        Above     Normal      Above                      
 Precipitation:     Normal        Above      Above      Above                      

....  Medium and long range outlooks provided by NCEP/K. Thomas Priddy
UKAWC 8 Day Forecast Maps, TWC Jet, 15-Day Jet,Trend, Max/Mins (80k)
6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook
Precipitation Report: (liquid equivalent)
 

Total Precipitation and Deviation From Normal (in inches)
Valid May 27, 2012

The nearest available weather station for Jefferson County is Louisville:

                      Past 7 days      Past 30 days   Jan 1 - Present
Station             Total     Dev     Total     Dev     Total     Dev
---------------     -----  ------     -----  ------    ------  ------
Louisville           0.00   -1.04      4.72   +0.28     18.26   -0.66
List of Kentucky Weather Stations (1st Order & Ag. stations) Rainfall
 UKAWC Regional Ag Weather Summary (Select Format): Spring , Summer , Fall
Drought Status For JEFFERSON County, Kentucky
(Based on the latest Palmer Drought Severity and Crop Moisture Indices) 
CENTRAL   KY CLIMATE DIVISION

Hydrological Drought (PDSI) Situation:
------------------------------------------------------------------------------------

Current Long-term Hydrological Moisture Status: NEAR NORMAL           (PDSI=   1.08)
Rainfall Needed:  0.00 inches ABOVE NORMAL


Crop Moisture (CMI) Situation:
----------------------------------------------------------------------------------------------------------

Current Short-term Crop Moisture Status: Favorable For Normal Growth And Fieldwork    (CMI=   0.56)
Change From Previous Week: DRIER      SOILS ( -0.49)

Note: Due to rainfall variability within each climate division, check Precip Reports/GIS Estimates and the Kentucky Climate Summary for the latest moisture information for this county.

Additional Drought Info.: UKAWC Drought Page

Kentucky Climate Summary
normal. High temperatures averaged from 83 in the West to 82 in the East. Departure from normal high temperatures ranged from +1 degrees from normal in the West to +5 degrees from normal in the East. Low temperatures averaged from 62 degrees in the West to 60 degrees in the East. Departure from normal low temperature ranged from +5 degrees from normal in the West to +4 degrees from normal in the East.

Precipitation (liq. equ.) for the period totaled 1.15 inches statewide which was + 0.09 inches from normal. Precipitation totals by climate division, West 1.47 inches, Central 0.63 inches, Bluegrass 1.68 inches and East 1.04 inches, which was + 0.36, -0.48, + 0.66 and + 0.05 inches respectively from normal. By station, precipitation totals ranged from a low of 0 inches at Nashville to a high of 4.1 inches at Covington.

Kentucky Climate Summaries: Last 3 days, 7 days, 14 days, 21 days, 30 days
Yesterday's Weather Data, Kentucky Climate Analysis, Kentucky Climate in Review (2005)

EUROPEAN CORN BORER not available
 European Corn Borer Accumulation Map

GIS ESTIMATES FOR JEFFERSON COUNTY
Valid July 29, 2013 

The GIS estimates are derived by ARC/INFO GIS software for a
central point in the county.  The estimates are calculated from
from 29 weather stations in the Kentucky area.

Precipitation Estimates

                     Last 3   Last 7   Last 14   Last 30     Since
                       Days     Days      Days      Days     Jan 1
_______________________________________________________________________________
Precip Total           0.03     1.89      2.16      5.77     28.78
Precip Deviation      -0.41     0.87      0.13      1.47      1.66

Temperature Estimates

                     Last 3        Last 7       Last 14       Last 30
                       Days          Days          Days          Days
_____________________________________________________________________
Temp Average             71            74            79            77
Temp Deviation           -5            -2             3             1

Soil Temperature Estimates

                                Yesterday
_________________________________________
Avg 4" Sod Soil Temp   	               76

European Corn Borer Degree Days Accumulations

Degree Days                      Forecasted Accumulations
      Total          550      610      750     1660     1740
____________________________________________________________
       2140         5/10     5/13     5/21     6/28      7/1
Almanac Information 
Monday May 23, 2022 the 143th Day of Year

---------------------------------------------------
SUN
Declination 20.770000
Distance 0.999717 AU
Rise 06:22 EDT Set 20:49 EDT
Transit Meridian 13:35 EDT
Civil Twilight Begins 05:53 EDT Ends 21:18 EDT

---------------------------------------------------
Normal Max/Min Temperature for Today: 80 / 57
---------------------------------------------------


Calculations made for central point in Kentucky
Time in ET -- and will vary due to location and
elevation -- Priddy
Sunrise/Sunset/Moonrise/Moonset Computation (USN)
TEMPERATURE is not available
 Yesterday's U.S. Highs, Lows , KY's Highs/Lows/Precip, Daily Weather Data, Hourly Weather Data
Historical Weather And Climate Facts For Today
///////////////////
MAY 23RD...HISTORIC WEATHER EVENTS
...1878...
An F4 tornado struck Mineral Point, WI killing 17 and injuring 45. A record 
book was carried 60 miles from a schoolhouse. In Primrose Township, the 
deed to Chandler Farm was found 10 miles away. (NWS Louisville)
...1882...
An unusual late season snow blanketed eastern Iowa, with four to six inches
reported around Washington. (David Ludlum) (The Weather Channel)
...1953...
The temperature at Hollis OK soared from a morning low of 70 degrees to an
afternoon high of 110 degrees to establish a state record for the month of
May. (The Weather Channel)
...2000...
An F3 tornado moved through the northeast and east sections of Leitchfield 
KY. An F0 tornado was spotted at Priceville KY. An F0 tornado touched down 
briefly in Taylor County. (NWS Louisville)
UKAWC Briefing Page

Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky