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Hartford, Illinois Weather Forecast
Hartford, Illinois Weather
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Weather Forecast for Hartford, Illinois : Madison County
Issued: 12:26 am CST Dec 5, 2025 Latitude: 38.8333815 Longitude: -90.09594 View on Google Maps

MouseOver for Detail Forecast
Overnight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
Mostly Clear on Overnight Sunny on Friday Partly Sunny on Saturday 30% chance of rain & snow on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday 30% chance of rain on Wednesday Partly Sunny on Thursday
Low: 4 °F High: 40°F High: 37°F High: 38°F High: 31°F High: 46°F High: 46°F High: 33°F
Low: 29°F Low: 29°F Low: 13°F Low: 22°F Low: 35°F Low: 21°F  
Mostly Clear Sunny Partly Sunny Rain & Snow Mostly Sunny Mostly Sunny Rain Partly Sunny
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Current Conditions at
ALTON - (KALN)
7°
Clear
as of 12:55 AM CST
Rel. Humidity: 84%
Dew Point: 3°F
Visibility: 10 Miles
Pressure: 30.18 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
14°
Clear
as of 12:51 AM CST
Rel. Humidity: 72%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.17 in.
Flight Rule: VFR
Wind Data
5 MPH
100° East
Cloud Level(s): Clear
Current Conditions at
EAST ST LOUIS - (KCPS)
12°
Clear
as of 12:53 AM CST
Rel. Humidity: 78%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.19 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ST CHARLES - (KSET)
10°
Clear
as of 12:54 AM CST
Rel. Humidity: 78%
Dew Point: 5°F
Visibility: 10 Miles
Pressure: 30.18 in.
Flight Rule: VFR
Wind Data
3 MPH
120° Southeast
Cloud Level(s): Clear
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 4. Calm wind.
Sunny on Friday Friday... Sunny, with a high near 40. Calm wind becoming south 5 to 8 mph in the morning.
Increasing Clouds on Friday Night Friday Night... Increasing clouds, with a low around 29. South wind around 7 mph becoming west after midnight.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 37. Light and variable wind becoming northeast around 5 mph in the afternoon.
40% chance of snow Saturday Night Saturday Night... A 40 percent chance of snow after midnight. Mostly cloudy, with a low around 29. East wind around 6 mph.
30% chance of rain & snow Sunday Sunday... A chance of rain before 9am, then a chance of snow between 9am and noon. Mostly cloudy, with a high near 38. Chance of precipitation is 30%.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 13.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 31.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 22.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 46.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 35.
30% chance of rain Wednesday Wednesday... A 30 percent chance of rain. Mostly cloudy, with a high near 46.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 21.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 33.
Current Radar Image


Sun Almanac for Hartford, Illinois
Sunrise: 07:04 AM
Sunset: 4:38 PM
Civil Sunrise:06:34 AM
Civil Sunset: 5:08 PM
Nautical Sunrise: 06:01 AM
Nautical Sunset: 5:41 PM
Astro Sunrise: 05:29 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.