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Frankfort, Illinois Weather Forecast
Frankfort, Illinois Weather
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Weather Forecast for Frankfort, Illinois : Franklin County
Issued: 3:06 pm CST Jan 1, 2026 Latitude: 37.9000495 Longitude: -88.9022902 View on Google Maps

MouseOver for Detail Forecast
New Year's Day Tonight Friday Saturday Sunday Monday Tuesday Wednesday
Sunny on New Year's Day Increasing Clouds on Tonight Mostly Cloudy on Friday Partly Sunny on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday Partly Sunny on Tuesday Partly Sunny on Wednesday
High: 46°F Low: 30°F High: 41°F High: 42°F High: 43°F High: 56°F High: 62°F High: 59°F
  Low: 30°F Low: 25°F Low: 32°F Low: 45°F Low: 42°F  
Sunny Increasing Clouds Mostly Cloudy Partly Sunny Mostly Sunny Mostly Sunny Partly Sunny Partly Sunny
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Current Conditions at
MARION - (KMWA)
50°
Clear
as of 2:45 PM CST
Rel. Humidity: 57%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
3 MPH
250° West
Cloud Level(s): Clear
Current Conditions at
HARRISBURG-RALEIGH - (KHSB)
48°
Clear
as of 2:55 PM CST
Rel. Humidity: 57%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CARBONDALE - (KMDH)
48°
Clear
as of 2:52 PM CST
Rel. Humidity: 66%
Dew Point: 37°F
Visibility: 9 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
7 MPH
350° North
Cloud Level(s): Clear
Current Conditions at
MT VERNON - (KMVN)
39°
Mostly Cloudy
as of 2:56 PM CST
Rel. Humidity: 75%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 29.93 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Broken at 1700ft
Sunny on New Year's Day New Year's Day... Sunny, with a high near 46. Calm wind.

Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 30. Calm wind.

Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 41. Calm wind becoming east northeast around 6 mph in the morning.

Cloudy on Friday Night Friday Night... Cloudy, with a low around 30. Northeast wind 3 to 6 mph.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 42. North northeast wind 3 to 6 mph.

Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 25. Calm wind.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 43. Calm wind.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 32. Calm wind becoming south around 6 mph after midnight.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 56. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 45. South wind 6 to 8 mph.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 62. Southwest wind 7 to 11 mph, with gusts as high as 18 mph.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 42. Southwest wind around 6 mph becoming light and variable after midnight.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 59. Light and variable wind becoming west southwest around 6 mph.

Current Radar Image


Sun Almanac for Frankfort, Illinois
Sunrise: 07:11 AM
Sunset: 4:47 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.