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Hartford, Illinois Weather Forecast
Hartford, Illinois Weather
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Weather Forecast for Hartford, Illinois : Madison County
Issued: 2:06 am CST Jan 26, 2026 Latitude: 38.8333815 Longitude: -90.09594 View on Google Maps

MouseOver for Detail Forecast
Overnight Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Clear on Overnight Sunny on Monday Mostly Sunny on Tuesday Mostly Sunny on Wednesday Mostly Cloudy on Thursday Mostly Sunny on Friday Mostly Sunny on Saturday Partly Sunny on Sunday
Low: -7°F High: 16°F High: 30°F High: 30°F High: 20°F High: 17°F High: 22°F High: 30°F
Low: 4 °F Low: -1°F Low: 4°F Low: 1°F Low: -2°F Low: 7°F  
Clear Sunny Mostly Sunny Mostly Sunny Mostly Cloudy Mostly Sunny Mostly Sunny Partly Sunny
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Current Conditions at
ALTON - (KALN)
Clear
as of 1:55 AM CST
Rel. Humidity: 59%
Dew Point: -9°F
Visibility: 10 Miles
Pressure: 30.38 in.
Flight Rule: VFR
Wind Data
7 MPH
310° Northwest
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
Clear
as of 1:51 AM CST
Rel. Humidity: 64%
Dew Point: -8°F
Visibility: 10 Miles
Pressure: 30.39 in.
Flight Rule: VFR
Wind Data
6 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
EAST ST LOUIS - (KCPS)
Feels like -12°F
Clear
as of 1:53 AM CST
Rel. Humidity: 65%
Dew Point: -6°F
Visibility: 10 Miles
Pressure: 30.40 in.
Flight Rule: VFR
Wind Data
10 MPH
320° Northwest
Cloud Level(s): Clear
Current Conditions at
ST CHARLES - (KSET)
-0°
Clear
as of 1:54 AM CST
Rel. Humidity: 59%
Dew Point: -11°F
Visibility: 10 Miles
Pressure: 30.41 in.
Flight Rule: VFR
Wind Data
6 MPH
280° West
Cloud Level(s): Clear
Clear on Overnight Overnight... Clear, with a low around -7. Wind chill values as low as -20. Northwest wind around 8 mph.

Sunny on Monday Monday... Sunny and cold, with a high near 16. Wind chill values as low as -20. Northwest wind 7 to 10 mph becoming southwest in the afternoon.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 4. Wind chill values as low as -10. South wind 6 to 10 mph, with gusts as high as 20 mph.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 30. Southwest wind 8 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around -1. Northwest wind around 6 mph becoming calm in the evening.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 30.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 4.

Mostly Cloudy on Thursday Thursday... Mostly cloudy and cold, with a high near 20.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 1.

Mostly Sunny on Friday Friday... Mostly sunny and cold, with a high near 17.

Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around -2.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 22.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 7.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 30.

Current Radar Image


Sun Almanac for Hartford, Illinois
Sunrise: 07:11 AM
Sunset: 5:15 PM
Civil Sunrise:06:43 AM
Civil Sunset: 5:43 PM
Nautical Sunrise: 06:10 AM
Nautical Sunset: 6:16 PM
Astro Sunrise: 05:39 AM
Astro Sunset: 6:47 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.