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Hartford, Illinois Weather Forecast
Hartford, Illinois Weather
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Weather Forecast for Hartford, Illinois : Madison County
Issued: 8:16 am CST Dec 6, 2025 Latitude: 38.8333815 Longitude: -90.09594 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Sunday Monday Tuesday Wednesday Thursday Friday
Partly Sunny on Today 20% chance of rain on Tonight 20% chance of rain on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday Partly Sunny on Wednesday 20% chance of rain & snow on Thursday Mostly Sunny on Friday
High: 43°F Low: 33°F High: 39 °F High: 33°F High: 49°F High: 45°F High: 37°F High: 29°F
Low: 17°F Low: 22°F Low: 37°F Low: 25°F Low: 21°F  
Partly Sunny Rain Rain Mostly Sunny Mostly Sunny Partly Sunny Rain & Snow Mostly Sunny
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Current Conditions at
ALTON - (KALN)
34°
Mostly Clear
as of 8:50 AM CST
Rel. Humidity: 86%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
6 MPH
280° West
Cloud Level(s): Few at 4500ft
Current Conditions at
ST LOUIS - (KSTL)
37°
Mostly Clear
as of 8:51 AM CST
Rel. Humidity: 80%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
5 MPH
Cloud Level(s): Few at 4600ft, Few at 25000ft
Current Conditions at
EAST ST LOUIS - (KCPS)
37°
Clear
as of 8:53 AM CST
Rel. Humidity: 80%
Dew Point: 32°F
Visibility: 7 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
3 MPH
240° Southwest
Cloud Level(s): Clear
Current Conditions at
ST CHARLES - (KSET)
30°
Clear
Mist
as of 8:54 AM CST
Rel. Humidity: 92%
Dew Point: 28°F
Visibility: 3 Miles
Pressure: 29.98 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Clear
Partly Sunny on Today Today... Partly sunny, with a high near 43. Calm wind becoming east around 6 mph in the afternoon.

20% chance of rain Tonight Tonight... A 20 percent chance of rain after 11pm. Cloudy, with a low around 33. East wind around 7 mph becoming south after midnight.

20% chance of rain Sunday Sunday... A 20 percent chance of rain before noon. Mostly cloudy, with a temperature rising to near 39 by noon, then falling to around 31 during the remainder of the day. South wind 5 to 13 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 17. North wind 5 to 10 mph.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 33. North wind around 5 mph becoming light and variable in the afternoon.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 22.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 49.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 37.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 45.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 25.

20% chance of rain & snow Thursday Thursday... A slight chance of rain and snow. Mostly cloudy, with a high near 37. Chance of precipitation is 20%.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 21.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 29.

Current Radar Image


Sun Almanac for Hartford, Illinois
Sunrise: 07:05 AM
Sunset: 4:38 PM
Civil Sunrise:06:35 AM
Civil Sunset: 5:08 PM
Nautical Sunrise: 06:02 AM
Nautical Sunset: 5:41 PM
Astro Sunrise: 05:30 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.