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Frankfort, Illinois Weather Forecast
Frankfort, Illinois Weather
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Weather Forecast for Frankfort, Illinois : Franklin County
Issued: 8:36 am CST Dec 31, 2025 Latitude: 37.9000495 Longitude: -88.9022902 View on Google Maps

MouseOver for Detail Forecast
Today Tonight New Year's Day Friday Saturday Sunday Monday Tuesday
Partly Sunny on Today Mostly Clear on Tonight Mostly Sunny on New Year's Day Cloudy on Friday Mostly Sunny on Saturday Partly Sunny on Sunday Partly Sunny on Monday Mostly Cloudy on Tuesday
High: 43°F Low: 27°F High: 42°F High: 45°F High: 41°F High: 45°F High: 56°F High: 55°F
Low: 30°F Low: 27°F Low: 24°F Low: 34°F Low: 39°F  
Partly Sunny Mostly Clear Mostly Sunny Cloudy Mostly Sunny Partly Sunny Partly Sunny Mostly Cloudy
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Current Conditions at
MARION - (KMWA)
36°
Feels like 28°F
Clear
as of 9:45 AM CST
Rel. Humidity: 55%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.11 in.
Flight Rule: VFR
Wind Data
9 MPH
270° West
Cloud Level(s): Clear
Current Conditions at
HARRISBURG-RALEIGH - (KHSB)
37°
Feels like 30°F
Clear
as of 9:55 AM CST
Rel. Humidity: 55%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.11 in.
Flight Rule: VFR
Wind Data
10 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
CARBONDALE - (KMDH)
37°
Clear
as of 9:52 AM CST
Rel. Humidity: 51%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.11 in.
Flight Rule: VFR
Wind Data
7 MPH
260° West
Cloud Level(s): Clear
Current Conditions at
MT VERNON - (KMVN)
36°
Cloudy
as of 9:56 AM CST
Rel. Humidity: 64%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: MVFR
Wind Data
7 MPH
Cloud Level(s): Solid Overcast at 1800ft
Partly Sunny on Today Today... Partly sunny, with a high near 43. West wind 6 to 9 mph.

Mostly Clear on Tonight Tonight... Mostly clear, with a low around 27. Light and variable wind.

Mostly Sunny on New Year's Day New Year's Day... Mostly sunny, with a high near 42. Northeast wind around 5 mph becoming calm in the afternoon.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 30. Calm wind.

Cloudy on Friday Friday... Cloudy, with a high near 45. Calm wind becoming northeast around 6 mph in the afternoon.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 27. North northeast wind 3 to 5 mph.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 41. North northeast wind 3 to 6 mph.

Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 24. Calm wind.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 45. Calm wind becoming south southeast around 5 mph.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 34. South wind 3 to 6 mph.

Partly Sunny on Monday Monday... Partly sunny, with a high near 56. South southwest wind 6 to 9 mph.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 39. Southwest wind around 5 mph.

Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 55. West wind 5 to 7 mph.

Current Radar Image


Sun Almanac for Frankfort, Illinois
Sunrise: 07:11 AM
Sunset: 4:46 PM
Civil Sunrise:06:42 AM
Civil Sunset: 5:16 PM
Nautical Sunrise: 06:09 AM
Nautical Sunset: 5:49 PM
Astro Sunrise: 05:37 AM
Astro Sunset: 6:21 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.