County Forecast for Watseka , IL
Change Zip Code: 
 
191500-
Iroquois-
Including the cities of Watseka and Gilman
705 PM CDT Fri Sep 18 2026

Tonight   Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of showers and thunderstorms late. Lows in the mid 60s. East winds 5 to 10 mph. Chance of precipitation 20 percent.
Saturday   Mostly cloudy. A chance of showers and thunderstorms, mainly in the morning. Humid with highs in the mid 80s. Southeast winds 5 to 10 mph. Chance of precipitation 50 percent.
Saturday night   Mostly cloudy. A chance of showers in the evening. A chance of thunderstorms. Showers likely after midnight. Humid with lows in the upper 60s. South winds around 5 mph, becoming northwest after midnight. Chance of precipitation 70 percent.
Sunday   A chance of thunderstorms in the morning. Showers likely. A slight chance of thunderstorms in the afternoon. Humid with highs in the mid 70s. Northeast winds 5 to 10 mph. Chance of precipitation 70 percent.
Sunday night   Mostly cloudy. A chance of showers in the evening. A slight chance of thunderstorms. Showers likely after midnight. Lows in the mid 50s. Northeast winds 5 to 10 mph. Chance of precipitation 70 percent.
Monday   Mostly cloudy. Showers likely with a chance of thunderstorms in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of precipitation 70 percent.
Monday night   Mostly cloudy. A chance of showers, mainly in the evening. Lows in the lower 50s. Chance of precipitation 30 percent.
Tuesday   Mostly cloudy with a 20 percent chance of showers. Highs in the mid 60s.
Tuesday night   Mostly cloudy. Lows in the lower 50s.
Wednesday   Mostly cloudy. Highs in the upper 60s.
Wednesday night   Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s.
Thursday   Mostly cloudy. Highs in the lower 70s.
Thursday night   Partly cloudy. Lows in the lower 50s.
Friday   Partly cloudy. Highs in the lower 70s.
DTN Weather
Local Weather
Radar
County Forecast
State Forecast
DTN Weather Commentary
US Satellite
Current Surface Analysis
Wind Conditions
Today's Forecast Highs
Tonight's Forecast Lows
24 Hr Surface Forecast
Jet Stream Forecast
24 Hr Rainfall Estimate
24 Hr StormPath Accum
48 Hr StormPath Accum
6-10 Day Temp Forecast
6-10 Day Precip Forecast
Thunderstorm Outlook
US Drought Monitor
US Palmer Drought Index
US Crop Moisture Index
US Growing Degree Days
Soil Temperatures
Hurricane Tracking

DTN Weather Summary

Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Heavy Rain Moving Through Northern US This Weekend
Posted at 11:40AM Fri Sep 18, 2026 CDT
Click here to get your local weather emailed to you each day.
Copyright DTN. All rights reserved. Disclaimer.
The First Trust and Savings Bank is not responsible for and has no control over the subject matter, content, information, or graphics of this website or the websites that have links here. Please contact us with any concerns or comments.
Powered By DTN