Jefferson County Weather and Climate Synopsis



Click on button above to view IA Watches/Warnings/Special Wx Statements. Jefferson County, IA Weather and Climate Synopsis 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
Satellite images from NOAA

Weather Summary

Hourly Observations

Nowcast

Precision Ag., Lawn & Garden Guidance

7 Day Forecast

Medium & Long Range Outlook

Almanac

Historical Facts


US Weekly Rainfall Departure		US Weekly Temperature Departure

Also see:
Satellite Images of the Day All NWS Radars NWS Watch/Warning Maps UKAWC Regional Degree Day Maps 7-Day Dep. from Normal Rainfall Map 7-Day Dep. from Normal Temp. Map	Desktop Severe Weather Info US Weather at a Glance Learning About Weather State Crop/Weather Reports Crop Moisture Index (JAWF) Palmer Drought Index(NOAA) State Climatology Office

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


Weather Summary for Iowa
National Weather Service Des Moines IA
346 AM CST Tue Dec 31 2024

Today: 

Low pressure moving from Missouri into Central Illinois overnight
produced a broad area of light rain and snow across central and
southern Iowa early this morning. There were spotty areas of snow
accumulations with a few areas receiving around an inch or so.
Most primary roads and highways remained wet although less traveled
roads did become slushy in areas. Otherwise, northwest winds increased
and were common from 10 to 20 mph with gusts to almost 30 mph at 
times. 

The light precipitation is expected to come to an end this morning as
the system pulls away from the state. Some minor snow accumulations,
generally less than an inch remain possible in far south central to
southeast Iowa through mid morning, otherwise the north winds persist
for much of the day as cooler air arrives. Additional flurries are
expected late this afternoon into the evening as another weak system
passes through the state. 

Tonight and beyond: 

Any flurries are forecast to end tonight with clearing expected toward
daybreak on New Years Day. Mostly sunny skies will greet the New Year
with near normal temperatures in the mid 20s to lower 30s. However,
a clipper system approaches the state on Thursday with light snow
overspreading much of central into southern Iowa. Minor accumulations
are forecast by Thursday evening along with the arrival of cooler air.
Highs by Friday are forecast to remain in the teens to lower 20s over
much of the state as cold polar air overspread the Midwest.

National Ag. Weather Outlook, International Ag. Weather Summary
Current Surface Map, [2nd Source TWC]

Precision Agriculture Weather Forecast For JEFFERSON County

For Your Farm PointAgCast...Click here.

Regional Hourly Observations For JEFFERSON County
Issued at 700 AM CDT MON JUN 08 2026

SOUTHEAST IOWA CITY SKY/WX TMP DP RH WIND PRES REMARKS BURLINGTON LGT RAIN 72 71 97 S9 29.85S TC 22 6HR MIN TEMP: 70; 6HR MAX TEMP: 76; 6HR PCP: 0.41; FAIRFIELD * CLOUDY 72 72 100 CALM 29.83S FOG TC 22 FORT MADISON * CLOUDY 72 72 100 SE9 29.85R TC 22 OSKALOOSA * PTSUNNY 72 70 94 E6 29.84F TC 22 OTTUMWA LGT RAIN 70 69 97 E6 29.83S TC 21 6HR MIN TEMP: 70; 6HR MAX TEMP: 74; 6HR PCP: 0.25; WASHINGTON * LGT RAIN 70 70 100 E12 29.84S TC 21

Current Temperatures, Dewpoint, RH, Wind, Regional Obs, Surface 4-Panel
Current Agricultural Weather Conditions in Iowa
Based on observations at 600am CDT, Monday June 08, 2026

Across Iowa...temperatures are near 70 degrees west, near 71 degrees central, and near 70 degrees east. Current sky conditions are cloudy west, cloudy central, and cloudy east. In the west, relative humidity is near 93%, and the dew point is near 68 degrees. In the central part of the state, relative humidity is near 93%, and the dew point is near 69 degrees. In the east, relative humidity is near 97%, and the dew point is near 69 degrees. The livestock heat stress category is no stress west, no stress central, and no stress east. There is patchy fog east. Winds are from the southeast at 9 mph west, where conditions are favorable for spraying. Winds are from the east at 8 mph central, where conditions are favorable for spraying. Winds are from the east at 10 mph east, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 72 degrees at Burlington. The lowest temperature is 67 degrees at Dubuque.

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.

US Radar, All NWS Radars (In near-real time), Current Livestock Heat Stress Index (LSI), Current Wind Chill Map
Hazardous Weather Outlook For JEFFERSON County,IA

320 AM CDT Mon Jun 8 2026 DAY ONE TODAY AND TONIGHT Periods of slow moving showers and thunderstorms will be seen today and into the evening. Any storm will be capable of producing heavy rainfall. If storms stall or repeat over the same areas, then localized flash flooding is possible. A flash flood watch is in effect for the entire area through 7 PM. DAYS TWO THROUGH SEVEN TUESDAY THROUGH SUNDAY Hot and humid conditions will develop across the area Tuesday and Wednesday with heat indices near or above 100 degrees. Strong to severe storms are expected late Tuesday afternoon and night. Right now large hail and damaging winds are the primary risks. On Wednesday a higher risk of severe storms is expected. The Storm Prediction Center has an enhanced, level 3 out of 5, risk of severe storms. Damaging winds are the primary risk but isolated tornadoes and large hail cannot be ruled out. The rough timing looks to be late afternoon and much of the overnight hours. More thunderstorms, possibly severe, are expected on Thursday. SPOTTER INFORMATION STATEMENT Spotter activation will not be needed today or tonight. Rainfall reports over 1 inch will be appreciated.
NWS Severe Weather Map , Convective Outlook

7-Day Forecast For JEFFERSON County, IA
352 AM CDT Mon Jun 8 2026
FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING

TODAY
A chance of thunderstorms. Showers likely early this morning, then a chance of showers this afternoon. Some thunderstorms may produce heavy rainfall. Humid with highs in the lower 80s. Southeast winds 5 to 10 mph, becoming southwest this afternoon. Chance of rain 70 percent.
TONIGHT
Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may produce heavy rainfall in the evening. Humid with lows in the mid 60s. West winds around 5 mph. Chance of rain 20 percent.
TUESDAY
Mostly sunny. Hot with highs around 90. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 103 in the afternoon.
TUESDAY NIGHT
Partly cloudy in the evening, then clearing. Humid with lows in the lower 70s. South winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 102 early in the evening.
WEDNESDAY
Mostly sunny. Showers likely with a chance of thunderstorms in the afternoon. Breezy, hot with highs in the lower 90s. Southwest winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 60 percent. Heat index values up to 103 in the afternoon.
WEDNESDAY NIGHT
Showers with thunderstorms likely in the evening, then showers likely with a chance of thunderstorms after midnight. Lows in the mid 60s. Chance of rain 90 percent.
THURSDAY
Showers likely with a chance of thunderstorms. Highs in the mid 80s. Chance of rain 70 percent.
THURSDAY NIGHT
Mostly clear. A chance of showers and thunderstorms in the evening. Lows around 60. Chance of rain 30 percent.
FRIDAY
Sunny. Highs in the mid 80s.
FRIDAY NIGHT AND SATURDAY
Partly cloudy. A chance of showers. Lows in the lower 60s. Highs in the mid 80s. Chance of rain 50 percent.
SATURDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. Lows in the lower 60s. Chance of rain 50 percent.
SUNDAY
Mostly sunny. Highs around 80.
12-48 Hr Surface Forecast Maps, TWC 4-Panel Surface Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip, Severe Weather Pot.-Day 1, Day 2
Medium & Long Range Outlook For Iowa IOWA --------------------------------------------- 6 TO 10 DAY 8 TO 14 DAY 30 DAY 90 DAY JUN 13-17 JUN 15-21 JUN JUN-AUG ----------- ----------- -------- --------- Temperature: Below Below Precipitation: Normal Normal .... Medium and long range outlooks provided by NCEP/K. Thomas Priddy
5 Day Rainfall Forecast, 6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook
Almanac Information

Historical Weather And Climate Facts For Today

//////////////////////////// JUNE 8TH...HISTORIC WEATHER EVENTS ...1953... The worst tornado of record for the state of Michigan killed 116 persons. Flint MI was hardest hit. The tornado, half a mile in width, destroyed 200 homes on Coldwater Road killing entire families. (The Weather Channel) ...1966... A tornado ripped right through the heart of the capitol city of Topeka KS killing sixteen persons and causing 100 million dollars damage. The tornado, which struck during the evening, cut a swath of near total destruction eight miles long and four blocks wide. It was the most destructive tornado of record up until that time. (David Ludlum) ...1974... Severe thunderstorms spawned at least twenty-three tornadoes in Oklahoma during the afternoon and evening hours. One of the tornadoes struck the town Drumright killing sixteen persons and injuring 150 others. A tornado struck the National Weather Service office in Oklahoma City, and two tornadoes hit the city of Tulsa. Thunderstorms in Tulsa also produced as much as ten inches of rain. Total damage from the storms was around thirty million dollars. It was the worst natural disaster of record for Tulsa. (Storm Data)

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