Jefferson County, KY Weather and Hourly Weather


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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 100 PM EDT FRI APR 26 2024
NORTH CENTRAL KENTUCKY CITY SKY/WX TMP DP RH WIND PRES REMARKS LOUISVILLE/SDF PTSUNNY 71 49 45 S16G22 30.11F LOUISVILLE/LOU FAIR 68 50 52 SE6 30.11F FORT KNOX CLOUDY 66 52 59 SE14 30.09F

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 100pm EDT, Friday April 26, 2024

Across Kentucky...temperatures are near 74 degrees west, near 70 degrees central, and near 72 degrees east. Current sky conditions are fair west, fair central, and fair east. In the west, relative humidity is near 55%, and the dew point is near 57 degrees. In the central part of the state, relative humidity is near 49%, and the dew point is near 50 degrees. In the east, relative humidity is near 42%, and the dew point is near 48 degrees. Current drying conditions are fair west, good central, and good east. Winds are from the south at 10 mph west, where conditions are favorable for spraying. Winds are from the southwest at 18 mph with gusts at 28 mph central, where conditions are not favorable for spraying due to strong winds. Winds are unavailable east. Based on current available observations, the highest temperature is 74 degrees at Paducah. The lowest temperature is 62 degrees at Owensboro.

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: Fri Apr 26 10:37:22 EDT 2024

1037 AM EDT Fri Apr 26 2024 /937 AM CDT Fri Apr 26 2024/ This Hazardous Weather Outlook is for Indiana, south central Indiana, east central Kentucky, north central Kentucky, northwest Kentucky and south central Kentucky. .DAY ONE...This afternoon and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected 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 -

SATURDAY :
Highs across the state will range from 0 West and 0 Central, to 0 East. Dewpoints will range from (% to 0/ West, (% to 0/ Central, and (% to 0/ East throughout the day. Rainfall amounts of 0 inches over (F)% of the area West, 0 inches over (F)% of the area Central, and 0 inches over (F)% of the area East should be expected. Lows Saturday will fall to 0/ West, 0/ Central, and 0/ East. Skies throughout the day will start out and end in the West, start and end Central, and start out and end East. The maximum livestock stress category will be West, Central, and East. There will be 0 corn growing degree days West, 0 Central, and 0 East. Wind speeds in the morning and afternoon will be around and mph , respectively, West, and mph Central, and and mph East.
SATURDAY :
Highs across the state will range from 0 West and 0 Central, to 0 East. Dewpoints will range from to 0/ West, to 0/ Central, and to 0/ East throughout the day. Rainfall amounts of 0 inches over 0/ % of the area West, 0 inches over 0/ % of the area Central, and 0 inches over 0/ % of the area East should be expected. Lows Saturday will fall to 0/ West, 0/ Central, and 0/ East. Skies throughout the day will start out and end in the West, start and end Central, and start out and end East. The maximum livestock stress category will be West, Central, and East. There will be 0 corn growing degree days West, 0 Central, and 0 East. Wind speeds in the morning and afternoon will be around and mph , respectively, West, and mph Central, and and mph East.
SATURDAY :
Highs across the state will range from 0 West and 0 Central, to 0 East. Dewpoints will range from to 0/ West, to 0/ Central, and to 0/ East throughout the day. Rainfall amounts of 0 inches over 0 % of the area West, 0 inches over 0 % of the area Central, and 0 inches over 0 % of the area East should be expected. Lows Saturday will fall to 0/ West, 0/ Central, and 0/ East. Skies throughout the day will start out and end in the West, start and end Central, and start out and end East. The maximum livestock stress category will be West, Central, and East. There will be 0 corn growing degree days West, 0 Central, and 0 East. Wind speeds in the morning and afternoon will be around and mph , respectively, West, and mph Central, and and mph East.
SATURDAY :
Highs across the state will range from 0 West and 0 Central, to 0 East. Dewpoints will range from to 0/ West, to 0/ Central, and to 0/ East throughout the day. Rainfall amounts of inches over 0/ % of the area West, inches over 0/ % of the area Central, and inches over 0/ % of the area East should be expected. Lows Saturday will fall to 0/ West, 0/ Central, and 0/ East. Skies throughout the day will start out and end in the West, start and end Central, and start out and end East. The maximum livestock stress category will be West, Central, and East. There will be 0 corn growing degree days West, 0 Central, and 0 East. Wind speeds in the morning and afternoon will be around and mph , respectively, West, and mph Central, and and mph East.
SATURDAY :
Highs across the state will range from 0 West and 0 Central, to 0 East. Dewpoints will range from to 0/ West, to 0/ Central, and to 0/ East throughout the day. Rainfall amounts of inches over 0 % of the area West, inches over 0 % of the area Central, and inches over 0 % of the area East should be expected. Lows Saturday will fall to 0/ West, 0/ Central, and 0/ East. Skies throughout the day will start out and end in the West, start and end Central, and start out and end East. The maximum livestock stress category will be West, Central, and East. There will be corn growing degree days West, Central, and East. Wind speeds in the morning and afternoon will be around and mph , respectively, West, and mph Central, and and mph East.
SATURDAY :
Highs across the state will range from West and Central, to East. Dewpoints will range from to 0/ West, to 0/ Central, and to 0/ East throughout the day. Rainfall amounts of inches over 0/ % of the area West, inches over 0/ % of the area Central, and inches over 0/ % of the area East should be expected. Lows Saturday will fall to West, Central, and East. Skies throughout the day will start out and end in the West, start and end Central, and start out and end East. The maximum livestock stress category will be West, Central, and East.There will be corn growing degree days West, Central, and East. Wind speeds in the morning and afternoon will be around and mph, respectively, West, and mph Central, and and 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 1-MAY 5 MAY 3-MAY 9 JUN JUN-AUG ----------- ----------- -------- --------- Temperature: Above Above Precipitation: 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= 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 66 in the West to 67 in the East. Departure from normal high temperatures ranged from -8 degrees from normal in the West to -1 degrees from normal in the East. Low temperatures averaged from 44 degrees in the West to 44 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 0.47 inches statewide which was -0.51 inches from normal. Precipitation totals by climate division, West 0.74 inches, Central 0.54 inches, Bluegrass 0.24 inches and East 0.38 inches, which was -0.33, -0.48, -0.70 and -0.52 inches respectively from normal. By station, precipitation totals ranged from a low of 0 inches at Spindletop to a high of 2.57 inches at Evansville.
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
ALFALFA WEEVIL not available
Alfalfa Weevil Accumulation Map
WESTERN CORN ROOTWORM not available
Western Corn Rootworm 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
Friday April 26, 2024 the 117th Day of Year --------------------------------------------------- SUN Declination 14.000000 Distance 0.999718 AU Rise 06:47 EDT Set 20:26 EDT Transit Meridian 13:36 EDT Civil Twilight Begins 06:20 EDT Ends 20:53 EDT --------------------------------------------------- Normal Max/Min Temperature for Today: 72 / 49 --------------------------------------------------- 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

APRIL 26TH HISTORIC WEATHER EVENTS ...1834... Killer frosts were reported in the Deep South. The frost was quite severe around Huntsville AL, and highlighted a backward spring in the South that year. (David Ludlum) ...1978... An unusually strong occluded front swept out of the Gulf of Alaska and produced the first April thunderstorm of record at Fairbanks. Pea size hail fell northeast of Fairbanks from thunderstorms whose tops were less than 8000 feet. (The Weather Channel) ...1984... Severe thunderstorms associated with an intense cyclone spawned a total of forty-seven tornadoes in two days from Louisiana to Upper Michigan. The tornadoes killed 16 persons and injured 259 others. (Storm Data)
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Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky