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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 8:11 pm CST Dec 31, 2025 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
Tonight New Year's Day Friday Saturday Sunday Monday Tuesday Wednesday
20% chance of snow on Tonight Mostly Sunny on New Year's Day Mostly Sunny on Friday Partly Sunny on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday Mostly Cloudy on Tuesday Mostly Sunny on Wednesday
Low: 12°F High: 23°F High: 27°F High: 30°F High: 31°F High: 42°F High: 44°F High: 40°F
Low: 16°F Low: 18°F Low: 16°F Low: 27°F Low: 31°F Low: 28°F  
Snow Mostly Sunny Mostly Sunny Partly Sunny Mostly Sunny Mostly Sunny Mostly Cloudy Mostly Sunny
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Current Conditions at
PERU - (KVYS)
34°
Feels like 25°F
Cloudy
as of 8:55 PM CST
Rel. Humidity: 93%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: MVFR
Wind Data
12 MPH
Gust: 15 MPH
0° North
Cloud Level(s): Broken at 1400ft, Solid Overcast at 1900ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
32°
Cloudy
as of 8:55 PM CST
Rel. Humidity: 86%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 29.90 in.
Flight Rule: MVFR
Wind Data
8 MPH
0° North
Cloud Level(s): Solid Overcast at 1600ft
Current Conditions at
AURORA - (KARR)
27°
Feels like 13°F
Cloudy
as of 8:52 PM CST
Rel. Humidity: 79%
Dew Point: 21°F
Visibility: 9 Miles
Pressure: 29.91 in.
Flight Rule: MVFR
Wind Data
17 MPH
Gust: 28 MPH
0° North
Cloud Level(s): Solid Overcast at 2400ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
36°
Feels like 27°F
Cloudy
as of 8:55 PM CST
Rel. Humidity: 93%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.90 in.
Flight Rule: MVFR
Wind Data
12 MPH
290° West
Cloud Level(s): Solid Overcast at 1600ft
20% chance of snow Tonight Tonight... A 20 percent chance of snow before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 12. North wind 5 to 15 mph, with gusts as high as 25 mph.
Mostly Sunny on New Year's Day New Year's Day... Mostly sunny, with a high near 23. North northwest wind around 5 mph becoming west southwest in the afternoon. Winds could gust as high as 10 mph.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 16. Calm wind.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 27. Calm wind becoming north northwest around 5 mph.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 18. North northeast wind around 5 mph.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 30.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 16.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 31.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 27.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 42.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 31.
Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 44.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 28.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 40.
Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:21 AM
Sunset: 4:36 PM
Civil Sunrise:06:50 AM
Civil Sunset: 5:07 PM
Nautical Sunrise: 06:15 AM
Nautical Sunset: 5:42 PM
Astro Sunrise: 05:42 AM
Astro Sunset: 6:15 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.