Marion, Illinois Weather
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Weather Forecast for Marion, Illinois : Williamson County
Issued: 7:31 am CDT Sep 14, 2025 Latitude: 37.7306054 Longitude: -88.9331256 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday Thursday Friday Saturday
Sunny on Today 20% chance of thunderstorms on Tonight Sunny on Monday Sunny on Tuesday Sunny on Wednesday 10% chance of rain on Thursday 20% chance of thunderstorms on Friday 10% chance of rain on Saturday
High: 97°F Low: 68°F High: 92°F High: 93°F High: 92°F High: 91°F High: 86°F High: 85°F
Low: 67°F Low: 65°F Low: 65°F Low: 65°F Low: 62°F  
Sunny Thunderstorms Sunny Sunny Sunny Rain Thunderstorms Rain
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Current Conditions at
MARION - (KMWA)
73°
Partly Cloudy
as of 6:47 AM CDST
Rel. Humidity: 78%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
6 MPH
150° Southeast
Cloud Level(s): Scattered at 12000ft
Current Conditions at
CARBONDALE - (KMDH)
68°
Clear
Mist
as of 6:52 AM CDST
Rel. Humidity: 93%
Dew Point: 66°F
Visibility: 5 Miles
Pressure: 29.99 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
HARRISBURG-RALEIGH - (KHSB)
73°
Clear
as of 7:35 AM CDST
Rel. Humidity: 78%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
METROPOLIS MUNI ARP - (KM30)
68°
Partly Cloudy
as of 7:35 AM CDST
Rel. Humidity: 100%
Dew Point: 68°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Scattered at 8000ft
Sunny on Today Today... Sunny and hot, with a high near 97. Calm wind becoming west around 5 mph in the afternoon.

20% chance of thunderstorms Tonight Tonight... A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 68. Calm wind. Chance of precipitation is 20%.

Sunny on Monday Monday... Sunny, with a high near 92. Calm wind becoming east southeast around 6 mph in the morning.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 67. Light east wind.

Sunny on Tuesday Tuesday... Sunny, with a high near 93. Calm wind becoming east southeast around 6 mph in the afternoon.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 65. Calm wind.

Sunny on Wednesday Wednesday... Sunny, with a high near 92. Calm wind becoming southeast around 5 mph in the afternoon.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 65. Calm wind.

10% chance of rain Thursday Thursday... A slight chance of showers after 1pm. Mostly sunny, with a high near 91. Calm wind becoming south southwest around 6 mph in the morning.

20% chance of thunderstorms Thursday Night Thursday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Light south wind.

20% chance of thunderstorms Friday Friday... A chance of showers and thunderstorms. Partly sunny, with a high near 86. Calm wind becoming west southwest around 6 mph in the morning.

20% chance of rain Friday Night Friday Night... A chance of showers. Partly cloudy, with a low around 62. Calm wind.

10% chance of rain Saturday Saturday... A slight chance of showers. Mostly sunny, with a high near 85. Calm wind becoming west northwest 5 to 7 mph in the morning.

Current Radar Image


Sun Almanac for Marion, Illinois
Sunrise: 06:37 AM
Sunset: 7:05 PM
Civil Sunrise:06:11 AM
Civil Sunset: 7:31 PM
Nautical Sunrise: 05:40 AM
Nautical Sunset: 8:02 PM
Astro Sunrise: 05:08 AM
Astro Sunset: 8:34 PM
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