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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 7:56 pm CST Dec 11, 2025 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
30% chance of snow on Tonight 20% chance of snow on Friday 70% chance of snow on Saturday Sunny on Sunday Mostly Sunny on Monday Partly Sunny on Tuesday Mostly Cloudy on Wednesday Partly Sunny on Thursday
Low: 22°F High: 28°F High: 11°F High: 4°F High: 23°F High: 34°F High: 42°F High: 40°F
Low: 7 °F Low: -6°F Low: -5°F Low: 15°F Low: 29°F Low: 32°F  
Snow Snow Snow Sunny Mostly Sunny Partly Sunny Mostly Cloudy Partly Sunny
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Current Conditions at
PERU - (KVYS)
28°
Cloudy
Light Rain
as of 8:15 PM CST
Rel. Humidity: 79%
Dew Point: 23°F
Visibility: 5 Miles
Pressure: 30.02 in.
Flight Rule: MVFR
Wind Data
5 MPH
110° East
Cloud Level(s): Scattered at 2500ft, Broken at 3100ft, Solid Overcast at 4400ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
27°
Cloudy
as of 8:15 PM CST
Rel. Humidity: 86%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 2700ft
Current Conditions at
AURORA - (KARR)
25°
Cloudy
as of 7:52 PM CST
Rel. Humidity: 73%
Dew Point: 18°F
Visibility: 7 Miles
Pressure: 30.01 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 2200ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
27°
Cloudy
as of 8:15 PM CST
Rel. Humidity: 92%
Dew Point: 25°F
Visibility: 2 Miles
Pressure: 30.03 in.
Flight Rule: IFR
Wind Data
6 MPH
100° East
Cloud Level(s): Broken at 2600ft, Solid Overcast at 3000ft
30% chance of snow Tonight Tonight... A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 22. East northeast wind around 5 mph.

20% chance of snow Friday Friday... A slight chance of snow between 9am and 3pm. Mostly cloudy, with a high near 28. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 20%.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 7. Wind chill values as low as -7. West wind 10 to 15 mph, with gusts as high as 20 mph.

70% chance of snow Saturday Saturday... Snow likely, mainly after noon. Cloudy, with a high near 11. Wind chill values as low as -8. Northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around -6. Northwest wind around 10 mph, with gusts as high as 20 mph.

Sunny on Sunday Sunday... Sunny and cold, with a high near 4.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around -5.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 23.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 15.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 34.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 29.

Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 42.

20% chance of rain Wednesday Night Wednesday Night... A chance of rain. Mostly cloudy, with a low around 32.

Partly Sunny on Thursday Thursday... Partly sunny, with a high near 40.

Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:12 AM
Sunset: 4:26 PM
Civil Sunrise:06:40 AM
Civil Sunset: 4:57 PM
Nautical Sunrise: 06:06 AM
Nautical Sunset: 5:32 PM
Astro Sunrise: 05:32 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.