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Hartford, Illinois Weather Forecast
Hartford, Illinois Weather
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Weather Forecast for Hartford, Illinois : Madison County
Issued: 5:01 pm CST Jan 17, 2026 Latitude: 38.8333815 Longitude: -90.09594 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Sunday M.L.King Day Tuesday Wednesday Thursday Friday Saturday
20% chance of snow on This Afternoon 20% chance of snow on Tonight 20% chance of snow on Sunday Sunny on M.L.King Day Mostly Sunny on Tuesday Mostly Sunny on Wednesday Sunny on Thursday 20% chance of rain on Friday 40% chance of snow on Saturday
High: 20°F Low: 13°F High: 33°F High: 21°F High: 38°F High: 44°F High: 38°F High: 43°F High: 31°F
Low: 11°F Low: 11°F Low: 28°F Low: 21°F Low: 24°F Low: 21°F  
Snow Snow Snow Sunny Mostly Sunny Mostly Sunny Sunny Rain Snow
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Current Conditions at
ALTON - (KALN)
18°
Feels like 2°F
Mostly Cloudy
as of 4:50 PM CST
Rel. Humidity: 52%
Dew Point: 3°F
Visibility: 10 Miles
Pressure: 30.25 in.
Flight Rule: VFR
Wind Data
17 MPH
Gust: 28 MPH
310° Northwest
Cloud Level(s): Broken at 4300ft
Current Conditions at
ST LOUIS - (KSTL)
18°
Feels like 1°F
Mostly Cloudy
as of 4:51 PM CST
Rel. Humidity: 48%
Dew Point: 1°F
Visibility: 10 Miles
Pressure: 30.25 in.
Flight Rule: VFR
Wind Data
20 MPH
Gust: 29 MPH
310° Northwest
Cloud Level(s): Broken at 5000ft, Broken at 8000ft
Current Conditions at
ST CHARLES - (KSET)
18°
Feels like 2°F
Mostly Cloudy
as of 4:54 PM CST
Rel. Humidity: 52%
Dew Point: 3°F
Visibility: 10 Miles
Pressure: 30.26 in.
Flight Rule: VFR
Wind Data
16 MPH
280° West
Cloud Level(s): Broken at 6000ft
20% chance of snow This Afternoon This Afternoon... A 20 percent chance of snow. Mostly cloudy and cold, with a steady temperature around 20. West wind around 15 mph, with gusts as high as 23 mph.

20% chance of snow Tonight Tonight... A chance of flurries before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 13. West wind 7 to 14 mph, with gusts as high as 22 mph.

20% chance of snow Sunday Sunday... A chance of flurries before 1pm, then a slight chance of snow between 1pm and 4pm, then a chance of flurries after 4pm. Increasing clouds, with a high near 33. Southwest wind 6 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

20% chance of snow Sunday Night Sunday Night... A chance of flurries before 9pm. Mostly clear, with a low around 11. Blustery, with a northwest wind 13 to 20 mph, with gusts as high as 28 mph.

Sunny on M.L.King Day M.L.King Day... Sunny, with a high near 21. Northwest wind 8 to 16 mph, with gusts as high as 26 mph.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 11.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 38.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 28.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 44.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 21.

Sunny on Thursday Thursday... Sunny, with a high near 38.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 24.

20% chance of rain Friday Friday... A 20 percent chance of rain. Mostly sunny, with a high near 43.

30% chance of rain & snow Friday Night Friday Night... A chance of rain and snow. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.

40% chance of snow Saturday Saturday... A 40 percent chance of snow. Mostly cloudy, with a high near 31.

Current Radar Image


Sun Almanac for Hartford, Illinois
Sunrise: 07:16 AM
Sunset: 5:05 PM
Civil Sunrise:06:47 AM
Civil Sunset: 5:34 PM
Nautical Sunrise: 06:15 AM
Nautical Sunset: 6:06 PM
Astro Sunrise: 05:43 AM
Astro Sunset: 6:38 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.