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Frankfort, Illinois Weather Forecast
Frankfort, Illinois Weather
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Weather Forecast for Frankfort, Illinois : Franklin County
Issued: 3:16 am CST Dec 24, 2025 Latitude: 37.9000495 Longitude: -88.9022902 View on Google Maps

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Overnight Wednesday Christmas Day Friday Saturday Sunday Monday Tuesday
Fog on Overnight Morning Fog on Wednesday 20% chance of rain on Christmas Day Partly Sunny on Friday Mostly Cloudy on Saturday 20% chance of rain on Sunday Sunny on Monday Mostly Sunny on Tuesday
Low: 50°F High: 67°F High: 68°F High: 72°F High: 70°F High: 59°F High: 29°F High: 33°F
Low: 58°F Low: 60°F Low: 51°F Low: 49°F Low: 20°F Low: 16°F  
Fog Morning Fog Rain Partly Sunny Mostly Cloudy Rain Sunny Mostly Sunny
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Current Conditions at
MARION - (KMWA)
55°
Cloudy
Mist
as of 4:55 AM CST
Rel. Humidity: 93%
Dew Point: 54°F
Visibility: 2 1/2 Miles
Pressure: 30.24 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Broken at 1500ft, Solid Overcast at 2100ft
Current Conditions at
HARRISBURG-RALEIGH - (KHSB)
54°
Cloudy
Mist
as of 4:55 AM CST
Rel. Humidity: 100%
Dew Point: 54°F
Visibility: 1 1/4 Miles
Pressure: 30.23 in.
Flight Rule: LIFR
Wind Data
5 MPH
070° East
Cloud Level(s): Solid Overcast at 200ft
Current Conditions at
CARBONDALE - (KMDH)
54°
Cloudy
Mist
as of 5:01 AM CST
Rel. Humidity: 100%
Dew Point: 54°F
Visibility: 2 1/2 Miles
Pressure: 30.22 in.
Flight Rule: IFR
Wind Data
3 MPH
050° Northeast
Cloud Level(s): Solid Overcast at 1600ft
Current Conditions at
MT VERNON - (KMVN)
48°
Cloudy
Mist
as of 4:56 AM CST
Rel. Humidity: 100%
Dew Point: 48°F
Visibility: 4 Miles
Pressure: 30.25 in.
Flight Rule: MVFR
Wind Data
6 MPH
040° Northeast
Cloud Level(s): Solid Overcast at 2700ft
Fog on Overnight Overnight... Patchy drizzle. Widespread dense fog. Otherwise, cloudy, with a low around 50. Light east wind.
Morning Fog on Wednesday Wednesday... Patchy drizzle before 1pm. Widespread dense fog before 9am. Otherwise, cloudy, with a high near 67. East wind 5 to 7 mph becoming south in the afternoon.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 58. Southwest wind around 7 mph.
20% chance of rain Christmas Day Christmas Day... A 20 percent chance of showers before noon. Mostly cloudy, with a high near 68. West southwest wind around 6 mph becoming south in the afternoon.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 60. Light south southeast wind becoming south southwest 5 to 9 mph in the evening.
Partly Sunny on Friday Friday... Partly sunny, with a high near 72. West southwest wind 7 to 13 mph, with gusts as high as 20 mph.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 51. West southwest wind around 5 mph becoming calm in the evening.
Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 70. Calm wind becoming south 5 to 9 mph in the morning.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 49. South wind 8 to 10 mph becoming west northwest after midnight. Winds could gust as high as 18 mph.
20% chance of rain Sunday Sunday... A chance of showers. Mostly cloudy, with a high near 59. Northwest wind 10 to 15 mph, with gusts as high as 24 mph.
10% chance of rain & snow Sunday Night Sunday Night... A slight chance of rain and snow showers. Partly cloudy, with a low around 20. Northwest wind 11 to 14 mph, with gusts as high as 22 mph.
Sunny on Monday Monday... Sunny, with a high near 29. Northwest wind 8 to 14 mph, with gusts as high as 21 mph.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 16. West northwest wind 3 to 7 mph.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 33. West northwest wind 5 to 9 mph becoming southwest in the afternoon.
Current Radar Image


Sun Almanac for Frankfort, Illinois
Sunrise: 07:09 AM
Sunset: 4:42 PM
Civil Sunrise:06:40 AM
Civil Sunset: 5:11 PM
Nautical Sunrise: 06:07 AM
Nautical Sunset: 5:44 PM
Astro Sunrise: 05:35 AM
Astro Sunset: 6:16 PM
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