Hartford, Illinois Weather
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Weather Forecast for Hartford, Illinois : Madison County
Issued: 10:06 pm CDT Sep 17, 2025 Latitude: 38.8333815 Longitude: -90.09594 View on Google Maps

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Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Clear on Tonight Sunny on Thursday 30% chance of thunderstorms on Friday 20% chance of thunderstorms on Saturday 30% chance of thunderstorms on Sunday 40% chance of thunderstorms on Monday 30% chance of thunderstorms on Tuesday 20% chance of rain on Wednesday
Low: 60°F High: 93°F High: 89°F High: 88°F High: 88°F High: 86°F High: 86°F High: 85°F
Low: 66°F Low: 66°F Low: 66°F Low: 66°F Low: 65°F Low: 63°F  
Clear Sunny Thunderstorms Thunderstorms Thunderstorms Thunderstorms Thunderstorms Rain
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Current Conditions at
ALTON - (KALN)
66°
Clear
as of 9:50 PM CDST
Rel. Humidity: 82%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
75°
Mostly Clear
as of 9:51 PM CDST
Rel. Humidity: 50%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 25000ft
Current Conditions at
EAST ST LOUIS - (KCPS)
64°
Clear
as of 9:53 PM CDST
Rel. Humidity: 88%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ST CHARLES - (KSET)
66°
Clear
as of 9:54 PM CDST
Rel. Humidity: 88%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
5 MPH
050° Northeast
Cloud Level(s): Clear
Clear on Tonight Tonight... Clear, with a low around 60. Light east wind.
Sunny on Thursday Thursday... Sunny, with a high near 93. Light southeast wind.
Increasing Clouds on Thursday Night Thursday Night... Increasing clouds, with a low around 66. Light southeast wind.
30% chance of thunderstorms Friday Friday... A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 89. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 30%.
40% chance of thunderstorms Friday Night Friday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
20% chance of thunderstorms Saturday Saturday... A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 88. Chance of precipitation is 20%.
20% chance of rain Saturday Night Saturday Night... A 20 percent chance of showers after 1am. Partly cloudy, with a low around 66.
30% chance of thunderstorms Sunday Sunday... A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. Chance of precipitation is 30%.
40% chance of thunderstorms Sunday Night Sunday Night... A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
40% chance of thunderstorms Monday Monday... A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.
30% chance of thunderstorms Monday Night Monday Night... A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
30% chance of thunderstorms Tuesday Tuesday... A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
20% chance of rain Tuesday Night Tuesday Night... A 20 percent chance of showers. Partly cloudy, with a low around 63.
20% chance of rain Wednesday Wednesday... A 20 percent chance of showers. Mostly sunny, with a high near 85.
Current Radar Image


Sun Almanac for Hartford, Illinois
Sunrise: 06:44 AM
Sunset: 7:05 PM
Civil Sunrise:06:17 AM
Civil Sunset: 7:32 PM
Nautical Sunrise: 05:46 AM
Nautical Sunset: 8:03 PM
Astro Sunrise: 05:14 AM
Astro Sunset: 8:35 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.