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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 3:11 pm CST Dec 8, 2025 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
Tonight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Mostly Cloudy on Tonight 30% chance of rain on Tuesday 50% chance of snow on Wednesday 30% chance of snow on Thursday 20% chance of snow on Friday Mostly Cloudy on Saturday Mostly Sunny on Sunday Mostly Cloudy on Monday
Low: 25 °F High: 35°F High: 34°F High: 23°F High: 21°F High: 8°F High: 13°F High: 24°F
Low: 32°F Low: 16°F Low: 12°F Low: 1°F Low: -1°F Low: 4°F  
Mostly Cloudy Rain Snow Snow Snow Mostly Cloudy Mostly Sunny Mostly Cloudy
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Current Conditions at
PERU - (KVYS)
19°
Partly Cloudy
as of 5:55 PM CST
Rel. Humidity: 73%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.22 in.
Flight Rule: VFR
Wind Data
6 MPH
120° Southeast
Cloud Level(s): Scattered at 5000ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
16°
Clear
as of 6:15 PM CST
Rel. Humidity: 78%
Dew Point: 10°F
Visibility: 10 Miles
Pressure: 30.24 in.
Flight Rule: VFR
Wind Data
3 MPH
170° South
Cloud Level(s): Clear
Current Conditions at
AURORA - (KARR)
Clear
as of 5:52 PM CST
Rel. Humidity: 92%
Dew Point: 7°F
Visibility: 8 Miles
Pressure: 30.22 in.
Flight Rule: VFR
Wind Data
3 MPH
130° Southeast
Cloud Level(s): Clear
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
10°
Clear
as of 5:55 PM CST
Rel. Humidity: 84%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.25 in.
Flight Rule: VFR
Wind Data
5 MPH
130° Southeast
Cloud Level(s): Clear
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a temperature rising to around 25 by 5am. South southwest wind 5 to 15 mph, with gusts as high as 30 mph.

30% chance of rain Tuesday Tuesday... A 30 percent chance of rain after 5pm. Mostly cloudy, with a high near 35. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

90% chance of freezing rain Tuesday Night Tuesday Night... Rain or freezing rain, becoming all rain after 7pm. Low around 32. Breezy, with a south wind 15 to 25 mph becoming west after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 90%. Little or no ice accumulation expected.

50% chance of snow Wednesday Wednesday... A 50 percent chance of snow. Mostly cloudy, with a high near 34. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph.

30% chance of snow Wednesday Night Wednesday Night... A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 16. West northwest wind 5 to 15 mph, with gusts as high as 20 mph.

30% chance of snow Thursday Thursday... A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 23.

40% chance of snow Thursday Night Thursday Night... A 40 percent chance of snow. Mostly cloudy, with a low around 12.

20% chance of snow Friday Friday... A chance of snow. Mostly cloudy, with a high near 21.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 1.

Mostly Cloudy on Saturday Saturday... Mostly cloudy and cold, with a high near 8.

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around -1.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 13.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 4.

Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 24.

Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:09 AM
Sunset: 4:26 PM
Civil Sunrise:06:38 AM
Civil Sunset: 4:57 PM
Nautical Sunrise: 06:03 AM
Nautical Sunset: 5:31 PM
Astro Sunrise: 05:30 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.