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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 9:10 pm CST Dec 1, 2025 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
Tonight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
100% chance of snow on Tonight Mostly Cloudy on Tuesday 50% chance of snow on Wednesday Sunny on Thursday Mostly Sunny on Friday Mostly Cloudy on Saturday Partly Sunny on Sunday Mostly Cloudy on Monday
Low: 13°F High: 22°F High: 33°F High: 9°F High: 24°F High: 28°F High: 24°F High: 24°F
Low: 24 °F Low: -1°F Low: -8°F Low: 16°F Low: 15°F Low: 5°F  
Snow Mostly Cloudy Snow Sunny Mostly Sunny Mostly Cloudy Partly Sunny Mostly Cloudy
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Current Conditions at
PERU - (KVYS)
25°
Cloudy
Light Snow
as of 10:15 PM CST
Rel. Humidity: 100%
Dew Point: 25°F
Visibility: 2 Miles
Pressure: 30.04 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Scattered at 1100ft, Solid Overcast at 2100ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
25°
Cloudy
Light Snow
as of 10:15 PM CST
Rel. Humidity: 100%
Dew Point: 25°F
Visibility: 1 1/4 Miles
Pressure: 30.04 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Scattered at 700ft, Solid Overcast at 1300ft
Current Conditions at
AURORA - (KARR)
25°
Cloudy
Light Snow Mist
as of 10:31 PM CST
Rel. Humidity: 92%
Dew Point: 23°F
Visibility: 1 1/2 Miles
Pressure: 30.03 in.
Flight Rule: IFR
Wind Data
3 MPH
190° South
Cloud Level(s): Solid Overcast at 3300ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
25°
Cloudy
as of 10:15 PM CST
Rel. Humidity: 92%
Dew Point: 23°F
Visibility: 4 Miles
Pressure: 30.04 in.
Flight Rule: MVFR
Wind Data
6 MPH
250° West
Cloud Level(s): Scattered at 3100ft, Solid Overcast at 4700ft
100% chance of snow Tonight Tonight... Snow, mainly before 1am. Low around 13. Southwest wind around 5 mph becoming west northwest after midnight. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 2 inches possible.
Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 22. West wind around 5 mph, with gusts as high as 10 mph.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a temperature rising to around 24 by 5am. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
50% chance of snow Wednesday Wednesday... A 50 percent chance of snow showers after noon. Cloudy, with a high near 33. South southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
20% chance of snow Wednesday Night Wednesday Night... A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around -1. Northwest wind around 10 mph, with gusts as high as 20 mph.
Sunny on Thursday Thursday... Sunny and cold, with a high near 9.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around -8.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 24.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 16.
Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 28.
20% chance of snow Saturday Night Saturday Night... A chance of snow. Mostly cloudy, with a low around 15.
Partly Sunny on Sunday Sunday... Partly sunny, with a high near 24.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 5.
Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 24.
Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:02 AM
Sunset: 4:26 PM
Civil Sunrise:06:32 AM
Civil Sunset: 4:57 PM
Nautical Sunrise: 05:57 AM
Nautical Sunset: 5:32 PM
Astro Sunrise: 05:24 AM
Astro Sunset: 6:05 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.