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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 2:31 pm CST Dec 4, 2025 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Friday Saturday Sunday Monday Tuesday Wednesday
Sunny on This Afternoon Fog on Tonight Morning Fog on Friday Partly Sunny on Saturday 40% chance of snow on Sunday Partly Sunny on Monday Mostly Cloudy on Tuesday 20% chance of rain & snow on Wednesday
High: 14°F Low: -3°F High: 30°F High: 28°F High: 24°F High: 21°F High: 31°F High: 33°F
Low: 25°F Low: 19°F Low: 2°F Low: 14°F Low: 23°F  
Sunny Fog Morning Fog Partly Sunny Snow Partly Sunny Mostly Cloudy Rain & Snow
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Current Conditions at
PERU - (KVYS)
12°
Clear
as of 2:15 PM CST
Rel. Humidity: 56%
Dew Point: -0°F
Visibility: 10 Miles
Pressure: 30.35 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
12°
Clear
as of 2:15 PM CST
Rel. Humidity: 66%
Dew Point: 3°F
Visibility: 10 Miles
Pressure: 30.34 in.
Flight Rule: VFR
Wind Data
5 MPH
310° Northwest
Cloud Level(s): Clear
Current Conditions at
AURORA - (KARR)
10°
Clear
as of 1:52 PM CST
Rel. Humidity: 66%
Dew Point: 1°F
Visibility: 8 Miles
Pressure: 30.33 in.
Flight Rule: VFR
Wind Data
5 MPH
320° Northwest
Cloud Level(s): Clear
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
14°
Clear
as of 2:15 PM CST
Rel. Humidity: 56%
Dew Point: 1°F
Visibility: 10 Miles
Pressure: 30.35 in.
Flight Rule: VFR
Wind Data
3 MPH
310° Northwest
Cloud Level(s): Clear
Sunny on This Afternoon This Afternoon... Sunny, with a high near 14. Calm wind.

Fog on Tonight Tonight... Patchy freezing fog after 9pm. Increasing clouds, with a low around -3. Wind chill values as low as -14. Calm wind becoming south around 5 mph in the evening. Winds could gust as high as 10 mph.

Morning Fog on Friday Friday... Patchy freezing fog before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 30. Wind chill values as low as -6. South southwest wind around 10 mph, with gusts as high as 20 mph.

30% chance of freezing rain & snow Friday Night Friday Night... Patchy snow and freezing rain. Mostly cloudy, with a low around 25. South southwest wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 28. West northwest wind around 5 mph becoming calm in the afternoon. Winds could gust as high as 10 mph.

50% chance of snow Saturday Night Saturday Night... A 50 percent chance of snow, mainly after midnight. Cloudy, with a low around 19.

40% chance of snow Sunday Sunday... A 40 percent chance of snow before noon. Partly sunny, with a high near 24.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 2.

Partly Sunny on Monday Monday... Partly sunny, with a high near 21.

20% chance of snow Monday Night Monday Night... A chance of snow. Mostly cloudy, with a low around 14.

Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 31.

20% chance of snow Tuesday Night Tuesday Night... A chance of snow. Cloudy, with a low around 23.

20% chance of rain & snow Wednesday Wednesday... A chance of rain and snow. Mostly cloudy, with a high near 33.

Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:05 AM
Sunset: 4:26 PM
Civil Sunrise:06:34 AM
Civil Sunset: 4:57 PM
Nautical Sunrise: 06:00 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.