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Hartford, Illinois Weather Forecast
Hartford, Illinois Weather
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Weather Forecast for Hartford, Illinois : Madison County
Issued: 4:26 am CST Jan 21, 2026 Latitude: 38.8333815 Longitude: -90.09594 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Thursday Friday Saturday Sunday Monday Tuesday
Clearing on Today Mostly Clear on Tonight Partly Sunny on Thursday Mostly Cloudy on Friday 50% chance of snow on Saturday 20% chance of snow on Sunday Sunny on Monday Mostly Sunny on Tuesday
High: 46°F Low: 23°F High: 38°F High: 14°F High: 14°F High: 20°F High: 23°F High: 35°F
Low: 8 °F Low: 1°F Low: 7°F Low: 4°F Low: 10°F  
Clearing Mostly Clear Partly Sunny Mostly Cloudy Snow Snow Sunny Mostly Sunny
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Current Conditions at
ALTON - (KALN)
36°
Feels like 27°F
Clear
as of 4:55 AM CST
Rel. Humidity: 43%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.06 in.
Flight Rule: VFR
Wind Data
13 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
37°
Feels like 28°F
Cloudy
as of 4:51 AM CST
Rel. Humidity: 44%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 21 MPH
220° Southwest
Cloud Level(s): Solid Overcast at 17000ft
Current Conditions at
EAST ST LOUIS - (KCPS)
37°
Clear
as of 4:53 AM CST
Rel. Humidity: 40%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.07 in.
Flight Rule: VFR
Wind Data
6 MPH
Cloud Level(s): Clear
Current Conditions at
ST CHARLES - (KSET)
36°
Feels like 27°F
Clear
as of 4:54 AM CST
Rel. Humidity: 43%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
13 MPH
240° Southwest
Cloud Level(s): Clear
Clearing on Today Today... Mostly cloudy through mid morning, then gradual clearing, with a high near 46. West wind 10 to 16 mph, with gusts as high as 28 mph.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 23. West wind 6 to 13 mph becoming northwest after midnight. Winds could gust as high as 24 mph.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 38. West wind 3 to 6 mph.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 8. Light northwest wind becoming north 10 to 15 mph in the evening. Winds could gust as high as 23 mph.
Mostly Cloudy on Friday Friday... Mostly cloudy and cold, with a high near 14. North wind 11 to 15 mph, with gusts as high as 23 mph.
Cloudy on Friday Night Friday Night... Cloudy, with a low around 1.
50% chance of snow Saturday Saturday... A 50 percent chance of snow, mainly after noon. Cloudy and cold, with a high near 14.
50% chance of snow Saturday Night Saturday Night... A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 7.
20% chance of snow Sunday Sunday... A 20 percent chance of snow before noon. Partly sunny and cold, with a high near 20.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 4.
Sunny on Monday Monday... Sunny, with a high near 23.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 10.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 35.
Current Radar Image


Sun Almanac for Hartford, Illinois
Sunrise: 07:14 AM
Sunset: 5:09 PM
Civil Sunrise:06:46 AM
Civil Sunset: 5:38 PM
Nautical Sunrise: 06:13 AM
Nautical Sunset: 6:10 PM
Astro Sunrise: 05:41 AM
Astro Sunset: 6:42 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.