Click on button above to view KY Watches/Warnings/Special Wx Statements.
Click here for all NWS Watch/Warning Map.

Jefferson County, KY Weather And Climate Synopsis

To sign UKAWC'S guestbook...send us your comments concerning our web site and Kentucky weather...Click Here.

To access other UK Agricultural Weather Center Pages use the pull-down menu below.

(Click image to zoom) or Click Here

36 Hr. Forecast Map
All Radar images NOAA/UKAWC
All Satellite images NOAA

County Hazardous Weather Outlook County Weather for Emergency Managers County Drought Status
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 Monday Evening, May 22, 2017
...Cool and Dry Conditions Today and Tomorrow...

Other than some isolated showers/storms across Southern Kentucky tomorrow, look for most to remain dry until chances increase Tuesday night and into Wednesday. This looks to signal the start of yet another active period ahead. Temperatures look to run below normal through Thursday, before seeing a warming trend heading into the holiday weekend.

Kentucky State Forecast

Western KY:
Central KY:
Eastern KY:

Specific and detailed farm-by-farm weather forecast information is available in your
Point Ag Forecast. Current Conditions Kentucky, U.S.

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 700 PM EDT MON MAY 22 2017
NORTH CENTRAL KENTUCKY
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LOUISVILLE/SDF PTSUNNY   72  47  40 E3        30.01F                  
LOUISVILLE/LOU SUNNY     72  47  40 CALM      30.02F                  
FORT KNOX      CLOUDY    68  49  49 SE3       30.00S                  

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 700pm EDT, Monday May 22, 2017

Across Kentucky...temperatures are near 74 degrees west, near 68 degrees central, and near 66 degrees east. Current sky conditions are cloudy west, cloudy central, and cloudy east. In the west, relative humidity is near 32%, and the dew point is near 43 degrees. In the central part of the state, relative humidity is near 45%, and the dew point is near 46 degrees. In the east, relative humidity is near 63%, and the dew point is near 53 degrees. Current drying conditions are good west, good central, and fair east. The livestock heat stress category is no stress west, no stress central, and no stress east. Winds are variable at 3 mph west, where conditions are favorable for spraying. Winds are from the east at 6 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 74 degrees at Paducah. The lowest temperature is 64 degrees at Somerset.

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, SkyWarn, NEXRAD, LSI Heat Index
Hazardous Weather Outlook For JEFFERSON County, Kentucky
Issued at: Mon May 22 14:42:01 EDT 2017

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
241 PM EDT Mon May 22 2017 /141 PM CDT Mon May 22 2017/

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.

Isolated to widely scattered thunderstorms are possible Wednesday as
low pressure moves through the region. This low pressure will produce
gusty winds and the stronger storms may also produce localized
flooding, especially should they fall over areas that received heavy
rainfall a few days ago. 

Chances for storms return for the holiday weekend as a stationary
frontal boundary somewhere over the Ohio Valley serves as a focus for
development.

.SPOTTER INFORMATION STATEMENT...

Spotters activation is not planned at this time. 

&&

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 67 West and 71 Central, to 75 East. Dewpoints will range from 54 to 52 West, 52 to 52 Central, and 53 to 56 East throughout the day. Rainfall amounts of 1.00-1.99 inches over 90 % of the area West, 0.25-0.49 inches over 70 % of the area Central, and 0.10-0.24 inches over 70 % of the area East should be expected. Lows Wednesday will fall to 56 West, 60 Central, and 59 East. Skies throughout the day will start out cloudy and end cloudy 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 12 corn growing degree days West, 16 Central, and 17 East. Wind speeds in the morning and afternoon will be around 7 and 12 mph , respectively, West, 6 and 21 mph Central, and 1 and 7 mph East.

THURSDAY :
Highs across the state will range from 72 West and 68 Central, to 64 East. Dewpoints will range from 50 to 51 West, 50 to 50 Central, and48 to 50 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 30 % of the area West, 0.10-0.24 inches over 70 % of the area Central, and 0.10-0.24 inches over 90 % of the area East should be expected. Lows Thursday will fall to 51 West, 54 Central, and 53 East. Skies throughout the day will start out cloudy and end cloudy 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 12 corn growing degree days West, 11 Central, and 8 East. Wind speeds in the morning and afternoon will be around 9 and 11 mph , respectively, West, 21 and 13 mph Central, and 6 and 10 mph East.

FRIDAY :
Highs across the state will range from 82 West and 81 Central, to 75 East. Dewpoints will range from 55 to 61 West, 53 to 55 Central, and 48 to 52 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 Friday will fall to 57 West, 56 Central, and 52 East. Skies throughout the day will start out clear and end partly cloudy in the West, start partly cloudy and end partly cloudy Central, and start out cloudy and end partly cloudy East. The maximum livestock stress category will be no stress West, no stress Central, and no stress East. There will be 20 corn growing degree days West, 18 Central, and 14 East. Wind speeds in the morning and afternoon will be around 5 and 10 mph , respectively, West, 13 and 9 mph Central, and 10 and 7 mph East.

SATURDAY :
Highs across the state will range from 84 West and 82 Central, to 81 East. Dewpoints will range from 63 to 66 West, 60 to 62 Central, and55 to 58 East throughout the day. Rainfall amounts of 0.50-0.99 inches over 60 % 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 Saturday will fall to 66 West, 66 Central, and 61 East. Skies throughout the day will start out cloudy and end cloudy in the West, start cloudy and end cloudy Central, and start out partly 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 25 corn growing degree days West, 24 Central, and 21 East. Wind speeds in the morning and afternoon will be around 9 and 12 mph , respectively, West, 8 and 13 mph Central, and 2 and 4 mph East.

SUNDAY :
Highs across the state will range from 85 West and 84 Central, to 83 East. Dewpoints will range from 66 to 66 West, 64 to 62 Central, and 60 to 62 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 50 % of the area West, 0.00-0.01 inches over 50 % of the area Central, and 0.00-0.01 inches over 60 % of the area East should be expected. Lows Sunday will fall to 68 West, 67 Central, and 63 East. Skies throughout the day will start out cloudy and end cloudy 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, 26 Central, and 23 East. Wind speeds in the morning and afternoon will be around 12 and 18 mph , respectively, West, 9 and 19 mph Central, and 4 and 7 mph East.

MONDAY :
Highs across the state will range from 83 West and 83 Central, to 83 East. Dewpoints will range from 65 to 61 West, 63 to 62 Central, and 61 to 62 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 50 % of the area West, 0.00-0.01 inches over 50 % of the area Central, and 0.00-0.01 inches over 60 % of the area East should be expected. Lows Monday will fall to 67 West, 67 Central, and 65 East. Skies throughout the day will start out cloudy and end cloudy 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 25 corn growing degree days West, 25 Central, and 24 East. Wind speeds in the morning and afternoon will be around 14 and 12 mph, respectively, West, 14 and 21 mph Central, and 4 and 11 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 28-JUN 1 MAY 30-JUN 5    MAY       MAY-JUL                      
                 -----------  -----------  --------  ---------
   Temperature:     Normal       Normal      Below      Above                      
 Precipitation:      Above        Above     Normal     Normal                      

....  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=  -0.19)
Rainfall Needed:  0.00 inches ABOVE NORMAL


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

Current Short-term Crop Moisture Status: Favorable, Except Still Too Wet In Spots     (CMI=   1.10)
Change From Previous Week: DRIER      SOILS ( -0.42)

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 84 in the West to 83 in the East. Departure from normal high temperatures ranged from +3 degrees from normal in the West to +7 degrees from normal in the East. Low temperatures averaged from 66 degrees in the West to 61 degrees in the East. Departure from normal low temperature ranged from +9 degrees from normal in the West to +5 degrees from normal in the East.

Precipitation (liq. equ.) for the period totaled 1.18 inches statewide which was + 0.12 inches from normal. Precipitation totals by climate division, West 0.48 inches, Central 1.35 inches, Bluegrass 1.23 inches and East 1.47 inches, which was -0.63, + 0.24, + 0.21 and + 0.48 inches respectively from normal. By station, precipitation totals ranged from a low of 0.02 inches at Nashville to a high of 2.93 inches at Buckhorn Lake.

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 22, 2017 the 142th Day of Year

---------------------------------------------------
SUN
Declination 20.620000
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 22ND...HISTORIC WEATHER EVENTS
...1876...
Denver CO was drenched with 6.53 inches of rain in 24 hours, an all-time
record for that location. (The Weather Channel)
...1911...
The temperature at Lewiston ME soared to 101 degrees. It was the hottest
temperature ever recorded in New England during the month of May. (David
Ludlum)
...1987...
A powerful tornado virtually wiped the small southwest Texas community of
Saragosa off the map. The twister destroyed eighty- five percent of the
structures in the town killing thirty persons and injuring 121 others in
the town of population 183. The tornado hurled trucks and autos through
adobe and wood- frame homes, with some vehicles blown 500 feet. (The
National Weather Summary) (Storm Data)

UKAWC Briefing Page

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