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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 4:36 pm CST Dec 2, 2025 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
Tonight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Mostly Cloudy on Tonight 40% chance of snow on Wednesday Sunny on Thursday Partly Sunny on Friday Mostly Cloudy on Saturday 20% chance of snow on Sunday Partly Sunny on Monday Mostly Cloudy on Tuesday
Low: 20°F High: 32°F High: 11°F High: 24°F High: 26°F High: 24°F High: 24°F High: 30°F
Low: 0 °F Low: -5°F Low: 14°F Low: 15°F Low: 9°F Low: 16°F  
Mostly Cloudy Snow Sunny Partly Sunny Mostly Cloudy Snow Partly Sunny Mostly Cloudy
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Current Conditions at
PERU - (KVYS)
23°
Feels like 11°F
Mostly Cloudy
as of 11:15 PM CST
Rel. Humidity: 85%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: MVFR
Wind Data
13 MPH
190° South
Cloud Level(s): Broken at 1000ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
23°
Feels like 13°F
Cloudy
as of 11:35 PM CST
Rel. Humidity: 92%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: IFR
Wind Data
9 MPH
200° South
Cloud Level(s): Solid Overcast at 900ft
Current Conditions at
AURORA - (KARR)
21°
Feels like 8°F
Cloudy
Mist
as of 10:52 PM CST
Rel. Humidity: 92%
Dew Point: 19°F
Visibility: 5 Miles
Pressure: 30.00 in.
Flight Rule: IFR
Wind Data
14 MPH
210° Southwest
Cloud Level(s): Solid Overcast at 800ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
23°
Feels like 10°F
Cloudy
as of 11:15 PM CST
Rel. Humidity: 85%
Dew Point: 19°F
Visibility: 7 Miles
Pressure: 30.04 in.
Flight Rule: IFR
Wind Data
14 MPH
Gust: 20 MPH
210° Southwest
Cloud Level(s): Solid Overcast at 800ft
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 20. South southwest wind around 10 mph, with gusts as high as 20 mph.

40% chance of snow Wednesday Wednesday... A 40 percent chance of snow showers, mainly before 4pm. Cloudy, with a high near 32. South southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 0. Wind chill values as low as -12. North northwest wind 5 to 15 mph, with gusts as high as 20 mph.

Sunny on Thursday Thursday... Sunny, with a high near 11. Wind chill values as low as -13. North northwest wind around 5 mph becoming calm in the morning. Winds could gust as high as 10 mph.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around -5. Calm wind becoming south southwest around 5 mph in the evening. Winds could gust as high as 10 mph.

Partly Sunny on Friday Friday... Partly sunny, with a high near 24.

20% chance of snow Friday Night Friday Night... A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 14.

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 26.

20% chance of snow Saturday Night Saturday Night... A chance of snow. Mostly cloudy, with a low around 15.

20% chance of snow Sunday Sunday... A chance of snow. Mostly cloudy, with a high near 24.

20% chance of snow Sunday Night Sunday Night... A chance of snow. Mostly cloudy, with a low around 9.

Partly Sunny on Monday Monday... Partly sunny, with a high near 24.

20% chance of snow Monday Night Monday Night... A chance of snow. Mostly cloudy, with a low around 16.

Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 30.

Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:04 AM
Sunset: 4:26 PM
Civil Sunrise:06:33 AM
Civil Sunset: 4:57 PM
Nautical Sunrise: 05:59 AM
Nautical Sunset: 5:31 PM
Astro Sunrise: 05:26 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.