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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 8:46 pm CST Nov 18, 2025 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
Tonight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Cloudy on Tonight Cloudy on Wednesday 20% chance of rain on Thursday 20% chance of rain on Friday Mostly Sunny on Saturday Sunny on Sunday Mostly Sunny on Monday 20% chance of rain on Tuesday
Low: 42°F High: 45°F High: 57°F High: 51°F High: 51°F High: 55°F High: 55°F High: 51°F
Low: 39°F Low: 38°F Low: 34°F Low: 35°F Low: 38°F Low: 36°F  
Cloudy Cloudy Rain Rain Mostly Sunny Sunny Mostly Sunny Rain
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Current Conditions at
PERU - (KVYS)
43°
Feels like 36°F
Cloudy
Mist
as of 11:35 PM CST
Rel. Humidity: 93%
Dew Point: 41°F
Visibility: 5 Miles
Pressure: 30.11 in.
Flight Rule: IFR
Wind Data
10 MPH
030° Northeast
Cloud Level(s): Solid Overcast at 600ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
43°
Cloudy
Mist
as of 11:35 PM CST
Rel. Humidity: 100%
Dew Point: 43°F
Visibility: 5 Miles
Pressure: 30.10 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 800ft
Current Conditions at
AURORA - (KARR)
43°
Cloudy
Mist
as of 10:52 PM CST
Rel. Humidity: 86%
Dew Point: 39°F
Visibility: 4 Miles
Pressure: 30.10 in.
Flight Rule: IFR
Wind Data
7 MPH
040° Northeast
Cloud Level(s): Solid Overcast at 700ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
43°
Cloudy
Mist
as of 11:35 PM CST
Rel. Humidity: 93%
Dew Point: 41°F
Visibility: 3 Miles
Pressure: 30.09 in.
Flight Rule: IFR
Wind Data
8 MPH
050° Northeast
Cloud Level(s): Solid Overcast at 700ft
Cloudy on Tonight Tonight... Cloudy, with a low around 42. Northeast wind around 5 mph.

Cloudy on Wednesday Wednesday... Cloudy, with a high near 45. East wind around 5 mph becoming calm in the afternoon.

Cloudy on Wednesday Night Wednesday Night... Cloudy, with a low around 39. Calm wind.

20% chance of rain Thursday Thursday... A 20 percent chance of rain after noon. Mostly cloudy, with a high near 57. Light south southeast wind becoming south southwest 5 to 10 mph in the morning.

20% chance of rain Thursday Night Thursday Night... A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 38. South southwest wind around 5 mph becoming north after midnight. Winds could gust as high as 10 mph.

20% chance of rain Friday Friday... A 20 percent chance of rain after noon. Partly sunny, with a high near 51.

20% chance of rain Friday Night Friday Night... A 20 percent chance of rain. Mostly cloudy, with a low around 34.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 51.

Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 35.

Sunny on Sunday Sunday... Sunny, with a high near 55.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 38.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 55.

20% chance of rain Monday Night Monday Night... A chance of rain. Mostly cloudy, with a low around 36.

20% chance of rain Tuesday Tuesday... A chance of rain. Mostly cloudy, with a high near 51.

Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 06:49 AM
Sunset: 4:32 PM
Civil Sunrise:06:19 AM
Civil Sunset: 5:02 PM
Nautical Sunrise: 05:45 AM
Nautical Sunset: 5:36 PM
Astro Sunrise: 05:12 AM
Astro Sunset: 6:09 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.