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Frankfort, Illinois Weather Forecast
Frankfort, Illinois Weather
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Weather Forecast for Frankfort, Illinois : Franklin County
Issued: 8:02 am CST Jan 24, 2026 Latitude: 37.9000495 Longitude: -88.9022902 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Sunday Monday Tuesday Wednesday Thursday Friday
100% chance of snow on Today 100% chance of snow on Tonight 100% chance of snow on Sunday Sunny on Monday Sunny on Tuesday Mostly Sunny on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday
High: 14°F Low: 13°F High: 18°F High: 15°F High: 30°F High: 26°F High: 21°F High: 21°F
Low: -1°F Low: -1°F Low: 7 °F Low: 5 °F Low: 1 °F  
Snow Snow Snow Sunny Sunny Mostly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
MARION - (KMWA)
9°
Feels like -4°F
Cloudy
Light Snow
as of 9:24 AM CST
Rel. Humidity: 60%
Dew Point: -2°F
Visibility: 2 1/2 Miles
Pressure: 30.57 in.
Flight Rule: IFR
Wind Data
9 MPH
040° Northeast
Cloud Level(s): Broken at 2300ft, Solid Overcast at 3700ft
Current Conditions at
HARRISBURG-RALEIGH - (KHSB)
12°
Feels like -1°F
Cloudy
as of 9:35 AM CST
Rel. Humidity: 47%
Dew Point: -4°F
Visibility: 10 Miles
Pressure: 30.58 in.
Flight Rule: VFR
Wind Data
10 MPH
040° Northeast
Cloud Level(s): Scattered at 3400ft, Broken at 4100ft, Solid Overcast at 4700ft
Current Conditions at
CARBONDALE - (KMDH)
7°
Cloudy
Light Snow
as of 9:22 AM CST
Rel. Humidity: 71%
Dew Point: -0°F
Visibility: 3/4 Miles
Pressure: 30.58 in.
Flight Rule: MVFR
Wind Data
8 MPH
030° Northeast
Cloud Level(s): Solid Overcast at 2200ft
100% chance of snow Today Today... Snow, mainly after noon. High near 14. Wind chill values as low as -5. Northeast wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 3 inches possible.
100% chance of snow Tonight Tonight... Snow. Low around 13. Wind chill values as low as zero. Northeast wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
100% chance of snow Sunday Sunday... Snow, mainly before 4pm. High near 18. Wind chill values as low as -1. North wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
20% chance of snow Sunday Night Sunday Night... A 20 percent chance of snow before midnight. Cloudy during the early evening, then gradual clearing, with a low around -1. Wind chill values as low as -14. Northwest wind 9 to 13 mph, with gusts as high as 26 mph.
Sunny on Monday Monday... Sunny, with a high near 15. Northwest wind 5 to 10 mph.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around -1. Light west wind becoming south southwest 5 to 10 mph in the evening. Winds could gust as high as 20 mph.
Sunny on Tuesday Tuesday... Sunny, with a high near 30. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 7. West southwest wind around 5 mph becoming calm in the evening.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 26. Calm wind becoming west northwest 5 to 7 mph in the morning.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 5. Light and variable wind becoming north northwest around 6 mph after midnight.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 21. North northwest wind 6 to 9 mph.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 1. North northwest wind 3 to 6 mph.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 21. North northwest wind 5 to 7 mph.
Sun Almanac for Frankfort, Illinois
Sunrise: 07:06 AM
Sunset: 5:10 PM
Civil Sunrise:06:37 AM
Civil Sunset: 5:38 PM
Nautical Sunrise: 06:06 AM
Nautical Sunset: 6:10 PM
Astro Sunrise: 05:34 AM
Astro Sunset: 6:41 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.