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Hartford, Illinois Weather Forecast
Hartford, Illinois Weather
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Weather Forecast for Hartford, Illinois : Madison County
Issued: 4:41 am CST Dec 27, 2025 Latitude: 38.8333815 Longitude: -90.09594 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Sunday Monday Tuesday Wednesday New Year's Day Friday
Morning Fog on Today 20% chance of rain on Tonight 80% chance of thunderstorms on Sunday Mostly Sunny on Monday Sunny on Tuesday Mostly Sunny on Wednesday Mostly Sunny on New Year's Day Mostly Sunny on Friday
High: 63°F Low: 58°F High: 70 °F High: 28°F High: 35°F High: 43°F High: 34°F High: 33°F
Low: 19°F Low: 18°F Low: 26°F Low: 23°F Low: 14°F  
Morning Fog Rain Thunderstorms Mostly Sunny Sunny Mostly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
ALTON - (KALN)
48°
Cloudy
Mist
as of 6:15 AM CST
Rel. Humidity: 93%
Dew Point: 46°F
Visibility: 3 Miles
Pressure: 29.97 in.
Flight Rule: LIFR
Wind Data
5 MPH
110° East
Cloud Level(s): Solid Overcast at 300ft
Current Conditions at
ST LOUIS - (KSTL)
46°
Feels like 41°F
Cloudy
Fog
as of 5:58 AM CST
Rel. Humidity: 100%
Dew Point: 46°F
Visibility: 1/4 Miles
Pressure: 29.95 in.
Flight Rule: IFR
Wind Data
9 MPH
120° Southeast
Current Conditions at
EAST ST LOUIS - (KCPS)
46°
Clear
Fog
as of 6:20 AM CST
Rel. Humidity: 100%
Dew Point: 46°F
Visibility: 1/2 Miles
Pressure: 29.96 in.
Flight Rule: IFR
Wind Data
7 MPH
130° Southeast
Current Conditions at
ST CHARLES - (KSET)
46°
Feels like 41°F
Mostly Cloudy
Fog
as of 5:54 AM CST
Rel. Humidity: 93%
Dew Point: 45°F
Visibility: 1/2 Miles
Pressure: 29.95 in.
Flight Rule: IFR
Wind Data
10 MPH
130° Southeast
Morning Fog on Today Today... Areas of dense fog before 10am. Otherwise, mostly cloudy, with a high near 63. Light east wind becoming southeast 5 to 10 mph in the morning.

20% chance of rain Tonight Tonight... A 20 percent chance of showers after 9pm. Cloudy, with a low around 58. South wind 7 to 10 mph.

80% chance of thunderstorms Sunday Sunday... Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2pm. Temperature rising to near 70 by noon, then falling to around 56 during the remainder of the day. South wind 8 to 18 mph becoming west in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 80%.

40% chance of rain Sunday Night Sunday Night... A 40 percent chance of showers before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 19. Blustery, with a west wind 18 to 22 mph, with gusts as high as 34 mph.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 28. Breezy, with a northwest wind 16 to 22 mph, with gusts as high as 34 mph.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 18.

Sunny on Tuesday Tuesday... Sunny, with a high near 35.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 26.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 43.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 23.

Mostly Sunny on New Year's Day New Year's Day... Mostly sunny, with a high near 34.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 14.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 33.

Current Radar Image


Sun Almanac for Hartford, Illinois
Sunrise: 07:18 AM
Sunset: 4:46 PM
Civil Sunrise:06:48 AM
Civil Sunset: 5:15 PM
Nautical Sunrise: 06:14 AM
Nautical Sunset: 5:49 PM
Astro Sunrise: 05:42 AM
Astro Sunset: 6:21 PM
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