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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 7:21 pm CST Jan 24, 2026 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
Tonight Sunday Monday Tuesday Wednesday Thursday Friday Saturday
90% chance of snow on Tonight 50% chance of snow on Sunday Sunny on Monday Partly Sunny on Tuesday 20% chance of snow on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday Mostly Sunny on Saturday
Low: 0 °F High: 10°F High: 11°F High: 20°F High: 16°F High: 15°F High: 18°F High: 22°F
Low: -1°F Low: 5 °F Low: 3°F Low: 2°F Low: 3°F Low: 6°F  
Snow Snow Sunny Partly Sunny Snow Mostly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
PERU - (KVYS)
7°
Feels like -6°F
Cloudy
Unknown Precip
as of 8:39 PM CST
Rel. Humidity: 71%
Dew Point: -0°F
Visibility: 10 Miles
Pressure: 30.44 in.
Flight Rule: VFR
Wind Data
9 MPH
040° Northeast
Cloud Level(s): Scattered at 3500ft, Broken at 4400ft, Solid Overcast at 6000ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
7°
Partly Cloudy
Light Snow
as of 8:35 PM CST
Rel. Humidity: 77%
Dew Point: 1°F
Visibility: 3 Miles
Pressure: 30.45 in.
Flight Rule: MVFR
Wind Data
3 MPH
050° Northeast
Cloud Level(s): Scattered at 1700ft
Current Conditions at
AURORA - (KARR)
5°
Cloudy
Light Snow
as of 8:17 PM CST
Rel. Humidity: 77%
Dew Point: -0°F
Visibility: 3 Miles
Pressure: 30.45 in.
Flight Rule: MVFR
Wind Data
8 MPH
040° Northeast
Cloud Level(s): Solid Overcast at 4900ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
7°
Feels like -7°F
Cloudy
as of 8:35 PM CST
Rel. Humidity: 77%
Dew Point: 1°F
Visibility: 2 1/2 Miles
Pressure: 30.43 in.
Flight Rule: IFR
Wind Data
10 MPH
050° Northeast
Cloud Level(s): Solid Overcast at 1800ft
90% chance of snow Tonight Tonight... Snow. Low around 0. Wind chill values as low as -13. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 1 to 3 inches possible.
50% chance of snow Sunday Sunday... A 50 percent chance of snow before noon. Cloudy and cold, with a high near 10. Wind chill values as low as -15. North wind 10 to 15 mph, with gusts as high as 25 mph.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around -1. Wind chill values as low as -19. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunny on Monday Monday... Sunny, with a high near 11. Wind chill values as low as -19. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 5. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 20.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 3.
20% chance of snow Wednesday Wednesday... A chance of snow after noon. Partly sunny, with a high near 16.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 2.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 15.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 3.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 18.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 6.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 22.
Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:13 AM
Sunset: 5:01 PM
Civil Sunrise:06:43 AM
Civil Sunset: 5:31 PM
Nautical Sunrise: 06:10 AM
Nautical Sunset: 6:05 PM
Astro Sunrise: 05:37 AM
Astro Sunset: 6:37 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.