Jefferson City, Illinois Weather
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Weather Forecast for Jefferson City, Illinois : Hamilton County
Issued: 11:03 pm CDT Jun 5, 2025 Latitude: 38.1503254 Longitude: -88.4617161 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
Cloudy on Tonight 80% chance of thunderstorms on Friday 70% chance of thunderstorms on Saturday Mostly Sunny on Sunday 10% chance of thunderstorms on Monday Sunny on Tuesday Mostly Sunny on Wednesday 10% chance of on Thursday
Low: 68°F High: 79°F High: 80°F High: 83°F High: 81°F High: 79°F High: 82°F High: 83°F
Low: 65°F Low: 66°F Low: 64°F Low: 60°F Low: 58°F Low: 61°F  
Cloudy Thunderstorms Thunderstorms Mostly Sunny Thunderstorms Sunny Mostly Sunny Partly Sunny
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Current Conditions at
FAIRFIELD MUNICIPAL ARPT - (KFWC)
70°
Clear
as of 10:55 PM CDST
Rel. Humidity: 94%
Dew Point: 68°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
3 MPH
250° West
Cloud Level(s): Clear
Current Conditions at
HARRISBURG-RALEIGH - (KHSB)
70°
Clear
as of 10:55 PM CDST
Rel. Humidity: 94%
Dew Point: 68°F
Visibility: 7 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MT VERNON - (KMVN)
66°
Clear
Mist
as of 10:56 PM CDST
Rel. Humidity: 100%
Dew Point: 66°F
Visibility: 2 Miles
Pressure: 30.01 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
FLORA MUNICIPAL AIRPORT - (KFOA)
70°
Clear
Haze
as of 10:55 PM CDST
Rel. Humidity: 6%
Visibility: 7 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Cloudy on Tonight Tonight... Partly cloudy, with a low around 68. Calm wind.
80% chance of thunderstorms Friday Friday... Showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Patchy fog before 7am. High near 79. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 80%.
70% chance of thunderstorms Friday Night Friday Night... Showers and thunderstorms likely before 1am, then a slight chance of showers. Mostly cloudy, with a low around 65. North northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%.
70% chance of thunderstorms Saturday Saturday... A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 70%.
50% chance of thunderstorms Saturday Night Saturday Night... A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 66. Southwest wind 3 to 6 mph. Chance of precipitation is 50%.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 83. West northwest wind 6 to 9 mph.
20% chance of thunderstorms Sunday Night Sunday Night... A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64. West wind 3 to 6 mph.
10% chance of thunderstorms Monday Monday... A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Southwest wind 5 to 8 mph.
10% chance of thunderstorms Monday Night Monday Night... A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 60. West wind around 5 mph becoming calm in the evening.
Sunny on Tuesday Tuesday... Sunny, with a high near 79. Northwest wind 3 to 7 mph.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 58. Light north northwest wind.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 82. Light and variable wind.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 61. Calm wind.
10% chance of Thursday Thursday... A slight chance of showers. Partly sunny, with a high near 83. Calm wind becoming south southeast around 6 mph in the morning.
Current Radar Image


Sun Almanac for Jefferson City, Illinois
Sunrise: 05:31 AM
Sunset: 8:14 PM
Civil Sunrise:05:00 AM
Civil Sunset: 8:46 PM
Nautical Sunrise: 04:21 AM
Nautical Sunset: 9:25 PM
Astro Sunrise: 03:37 AM
Astro Sunset: 10:09 PM
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