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Fredonia, Illinois Weather Forecast
Fredonia, Illinois Weather
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Weather Forecast for Fredonia, Illinois : Williamson County
Issued: 1:06 pm CST Dec 17, 2025 Latitude: 37.7708836 Longitude: -89.1195232 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Thursday Friday Saturday Sunday Monday Tuesday
Sunny on This Afternoon 30% chance of rain on Tonight 100% chance of rain on Thursday Sunny on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday Partly Sunny on Monday Partly Sunny on Tuesday
High: 56°F Low: 49°F High: 56 °F High: 41°F High: 55°F High: 44°F High: 49°F High: 59°F
Low: 25°F Low: 32°F Low: 28°F Low: 29°F Low: 42°F  
Sunny Rain Rain Sunny Mostly Sunny Mostly Sunny Partly Sunny Partly Sunny
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Current Conditions at
CARBONDALE - (KMDH)
59°
Clear
as of 1:52 PM CST
Rel. Humidity: 44%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
13 MPH
170° South
Cloud Level(s): Clear
Current Conditions at
HARRISBURG-RALEIGH - (KHSB)
61°
Clear
as of 2:35 PM CST
Rel. Humidity: 36%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: VFR
Wind Data
9 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
MT VERNON - (KMVN)
Clear
as of 1:56 PM CST
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
9 MPH
200° South
Cloud Level(s): Clear
Sunny on This Afternoon This Afternoon... Sunny, with a high near 56. South southeast wind 3 to 6 mph.

30% chance of rain Tonight Tonight... A 30 percent chance of showers, mainly between 4am and 5am. Increasing clouds, with a low around 49. South wind 7 to 17 mph, with gusts as high as 32 mph.

100% chance of rain Thursday Thursday... Showers, mainly before 3pm. Temperature rising to near 56 by 10am, then falling to around 47 during the remainder of the day. Breezy, with a south wind 10 to 20 mph becoming west in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 100%.

Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 25. West northwest wind 8 to 14 mph, with gusts as high as 22 mph.

Sunny on Friday Friday... Sunny, with a high near 41. West northwest wind around 7 mph becoming south in the afternoon.

Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 32. South wind 6 to 14 mph, with gusts as high as 23 mph.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 55. South wind 10 to 16 mph, with gusts as high as 28 mph.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 28. Southwest wind 6 to 9 mph becoming north after midnight.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 44. North northeast wind 5 to 7 mph.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 29. East wind 3 to 5 mph.

Partly Sunny on Monday Monday... Partly sunny, with a high near 49. South southeast wind 5 to 7 mph.

10% chance of rain Monday Night Monday Night... A slight chance of showers. Mostly cloudy, with a low around 42. South southwest wind around 7 mph.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 59. South southwest wind 7 to 9 mph.

Current Radar Image


Sun Almanac for Fredonia, Illinois
Sunrise: 07:06 AM
Sunset: 4:39 PM
Civil Sunrise:06:37 AM
Civil Sunset: 5:09 PM
Nautical Sunrise: 06:04 AM
Nautical Sunset: 5:42 PM
Astro Sunrise: 05:32 AM
Astro Sunset: 6:14 PM
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