Carterville, Illinois Weather
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Weather Forecast for Carterville, Illinois : Williamson County
Issued: 8:46 am CDT Sep 16, 2025 Latitude: 37.7600501 Longitude: -89.0772991 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday Monday
Sunny on Today Mostly Clear on Tonight Sunny on Wednesday Sunny on Thursday 20% chance of on Friday 20% chance of thunderstorms on Saturday 20% chance of rain on Sunday 20% chance of thunderstorms on Monday
High: 93°F Low: 64°F High: 93°F High: 94°F High: 91°F High: 84°F High: 86°F High: 85°F
Low: 63°F Low: 66°F Low: 65°F Low: 65°F Low: 66°F  
Sunny Mostly Clear Sunny Sunny Partly Sunny Thunderstorms Rain Thunderstorms
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Current Conditions at
MARION - (KMWA)
82°
Clear
as of 10:45 AM CDST
Rel. Humidity: 58%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CARBONDALE - (KMDH)
82°
Clear
as of 10:52 AM CDST
Rel. Humidity: 58%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
3 MPH
Cloud Level(s): Clear
Current Conditions at
HARRISBURG-RALEIGH - (KHSB)
84°
Clear
as of 10:55 AM CDST
Rel. Humidity: 54%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MT VERNON - (KMVN)
84°
Clear
as of 10:56 AM CDST
Rel. Humidity: 51%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 30.16 in.
Flight Rule: VFR
Wind Data
6 MPH
Cloud Level(s): Clear
Sunny on Today Today... Sunny, with a high near 93. Calm wind becoming north northeast around 5 mph in the afternoon.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 64. Calm wind.
Sunny on Wednesday Wednesday... Sunny, with a high near 93. Calm wind becoming east northeast around 5 mph in the afternoon.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 63. Calm wind.
Sunny on Thursday Thursday... Sunny, with a high near 94. Calm wind becoming south around 5 mph in the afternoon.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 66. Light southeast wind.
20% chance of Friday Friday... A 20 percent chance of showers after 1pm. Partly sunny, with a high near 91. Calm wind becoming south around 6 mph in the afternoon.
20% chance of thunderstorms Friday Night Friday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Light and variable wind.
20% chance of thunderstorms Saturday Saturday... A chance of showers and thunderstorms. Partly sunny, with a high near 84. Calm wind becoming south southwest around 6 mph in the afternoon.
10% chance of thunderstorms Saturday Night Saturday Night... A slight chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 65. Calm wind.
20% chance of rain Sunday Sunday... A chance of showers. Mostly sunny, with a high near 86. Calm wind becoming south southwest 5 to 8 mph in the morning.
20% chance of thunderstorms Sunday Night Sunday Night... A chance of showers and thunderstorms. Partly cloudy, with a low around 66. South wind 3 to 5 mph.
20% chance of thunderstorms Monday Monday... A chance of showers and thunderstorms. Partly sunny, with a high near 85. South wind 5 to 8 mph.
Current Radar Image


Sun Almanac for Carterville, Illinois
Sunrise: 06:40 AM
Sunset: 7:02 PM
Civil Sunrise:06:13 AM
Civil Sunset: 7:29 PM
Nautical Sunrise: 05:42 AM
Nautical Sunset: 8:00 PM
Astro Sunrise: 05:11 AM
Astro Sunset: 8:31 PM
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