Hartford, Illinois Weather
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Weather Forecast for Hartford, Illinois : Madison County
Issued: 5:26 am CDT Sep 16, 2025 Latitude: 38.8333815 Longitude: -90.09594 View on Google Maps

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Today Tonight Wednesday Thursday Friday Saturday Sunday Monday
Morning Fog on Today Mostly Clear on Tonight Sunny on Wednesday Mostly Sunny on Thursday 40% chance of thunderstorms on Friday 30% chance of thunderstorms on Saturday 30% chance of thunderstorms on Sunday 30% chance of thunderstorms on Monday
High: 94°F Low: 64°F High: 94°F High: 95°F High: 87°F High: 86°F High: 87°F High: 88°F
Low: 64°F Low: 67°F Low: 65°F Low: 65°F Low: 66°F  
Morning Fog Mostly Clear Sunny Mostly Sunny Thunderstorms Thunderstorms Thunderstorms Thunderstorms
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Current Conditions at
ALTON - (KALN)
61°
Clear
as of 6:50 AM CDST
Rel. Humidity: 100%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 30.16 in.
Flight Rule: VFR
Wind Data
6 MPH
350° North
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
70°
Mostly Clear
as of 6:51 AM CDST
Rel. Humidity: 77%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 25000ft
Current Conditions at
ST CHARLES - (KSET)
64°
Clear
as of 6:54 AM CDST
Rel. Humidity: 93%
Dew Point: 63°F
Visibility: 9 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
3 MPH
330° Northwest
Cloud Level(s): Clear
Morning Fog on Today Today... Patchy fog before 8am. Otherwise, sunny, with a high near 94. Northeast wind 3 to 7 mph.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 64. Northeast wind around 6 mph.
Sunny on Wednesday Wednesday... Sunny, with a high near 94. Light east wind.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 64. Light southeast wind.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 95. Calm wind becoming south around 6 mph in the morning.
20% chance of rain Thursday Night Thursday Night... A 20 percent chance of showers after 1am. Partly cloudy, with a low around 67.
40% chance of thunderstorms Friday Friday... A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 40%.
50% chance of thunderstorms Friday Night Friday Night... A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
30% chance of thunderstorms Saturday Saturday... A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
30% chance of thunderstorms Saturday Night Saturday Night... A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 65.
30% chance of thunderstorms Sunday Sunday... A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
30% chance of thunderstorms Sunday Night Sunday Night... A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
30% chance of thunderstorms Monday Monday... A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Current Radar Image


Sun Almanac for Hartford, Illinois
Sunrise: 06:43 AM
Sunset: 7:07 PM
Civil Sunrise:06:17 AM
Civil Sunset: 7:34 PM
Nautical Sunrise: 05:45 AM
Nautical Sunset: 8:05 PM
Astro Sunrise: 05:13 AM
Astro Sunset: 8:37 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.