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Thomson, Illinois Weather Forecast
Thomson, Illinois Weather
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Weather Forecast for Thomson, Illinois : Carroll County
Issued: 10:41 pm CST Dec 20, 2025 Latitude: 41.9589158 Longitude: -90.0992924 View on Google Maps

MouseOver for Detail Forecast
Overnight Sunday Monday Tuesday Wednesday Christmas Day Friday Saturday
Clear on Overnight Sunny on Sunday Mostly Cloudy on Monday Mostly Sunny on Tuesday 30% chance of rain on Wednesday Mostly Cloudy on Christmas Day Mostly Cloudy on Friday Partly Sunny on Saturday
Low: 14°F High: 29°F High: 41°F High: 45°F High: 45°F High: 54°F High: 45°F High: 42°F
Low: 25 °F Low: 34°F Low: 29°F Low: 40°F Low: 35°F Low: 31°F  
Clear Sunny Mostly Cloudy Mostly Sunny Rain Mostly Cloudy Mostly Cloudy Partly Sunny
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Current Conditions at
SAVANNA - (KSFY)
23°
Clear
as of 12:55 AM CST
Rel. Humidity: 53%
Dew Point: 9°F
Visibility: 10 Miles
Pressure: 30.26 in.
Flight Rule: VFR
Wind Data
6 MPH
310° Northwest
Cloud Level(s): Clear
Current Conditions at
CLINTON - (KCWI)
21°
Feels like 9°F
Clear
as of 12:56 AM CST
Rel. Humidity: 67%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.28 in.
Flight Rule: VFR
Wind Data
12 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
STERLING ROCK - (KSQI)
25°
Clear
as of 12:56 AM CST
Rel. Humidity: 58%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.26 in.
Flight Rule: VFR
Wind Data
8 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
ALBERTUS AIRPORT - (KFEP)
21°
Feels like 8°F
Clear
as of 12:55 AM CST
Rel. Humidity: 57%
Dew Point: 9°F
Visibility: 10 Miles
Pressure: 30.25 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 20 MPH
300° Northwest
Cloud Level(s): Clear
Clear on Overnight Overnight... Clear, with a low around 14. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunny on Sunday Sunday... Sunny, with a high near 29. Calm wind becoming south around 5 mph in the afternoon.
Increasing Clouds on Sunday Night Sunday Night... Increasing clouds, with a temperature falling to near 25 by 10pm, then rising to around 30 during the remainder of the night. South wind 5 to 10 mph.
Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 41. South wind around 10 mph, with gusts as high as 20 mph.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 34.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 45.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 29.
30% chance of rain Wednesday Wednesday... A 30 percent chance of rain after noon. Cloudy, with a high near 45.
Cloudy on Wednesday Night Wednesday Night... Cloudy, with a low around 40.
Mostly Cloudy on Christmas Day Christmas Day... Mostly cloudy, with a high near 54.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 35.
Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 45.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 31.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 42.
Current Radar Image


Sun Almanac for Thomson, Illinois
Sunrise: 07:25 AM
Sunset: 4:32 PM
Civil Sunrise:06:53 AM
Civil Sunset: 5:04 PM
Nautical Sunrise: 06:18 AM
Nautical Sunset: 5:39 PM
Astro Sunrise: 05:44 AM
Astro Sunset: 6:13 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.