Weather World
Village of Thomson, ILThomson, IL 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Thomson, IL Weather Forecast
Thomson, IL Weather Forecast Date: 836 PM CDT Thu Sep 03 2026
The area/counties/county of: Carroll, including the city of Mount Carroll.or toggle through each period.
Tonight... Mostly clear. Lows in the lower 70s. South winds around 5 mph. Heat index values up to 101 early this evening.
Friday... Mostly sunny. A slight chance of showers and thunderstorms in the morning. Hot with highs in the lower 90s. South winds around 5 mph, becoming southwest in the afternoon. Chance of rain 20%. Heat index values up to 105 in the afternoon.
Friday Night... Mostly clear. A chance of showers after midnight. Humid with lows around 70. Southwest winds around 5 mph, becoming northeast after midnight. Chance of rain 40%. Heat index values up to 103 early in the evening.
Saturday... Mostly sunny. Humid with highs in the upper 80s. Northeast winds around 5 mph.
Saturday Night... Mostly clear. Humid with lows in the mid 60s. East winds 5 to 10 mph.
Sunday... Partly cloudy. Highs in the lower 80s. Lows in the lower 60s.
Monday... Partly cloudy. Highs in the lower 80s. Lows in the lower 60s.
Tuesday... Mostly sunny. Highs in the upper 80s.
Tuesday Night... Partly cloudy. A chance of showers after midnight. Lows in the lower 70s. Chance of rain 40%.
Wednesday... Partly sunny. Highs in the upper 80s.
Wednesday Night... Partly cloudy with a 40% chance of showers. Lows in the mid 60s.
POP = Probability of Precipitation
Thomson Radar Loop
Use the map search tool if you want to place a location marker on the radar map...