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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 am CST Jan 11, 2026 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
Overnight Sunday Monday Tuesday Wednesday Thursday Friday Saturday
30% chance of snow on Overnight Flurries on Sunday Mostly Sunny on Monday 20% chance of on Tuesday 20% chance of snow on Wednesday Mostly Sunny on Thursday 20% chance of snow on Friday Partly Sunny on Saturday
Low: 22°F High: 33°F High: 42°F High: 50°F High: 34°F High: 28°F High: 34°F High: 25°F
Low: 26°F Low: 33°F Low: 32°F Low: 17°F Low: 23°F Low: 19°F  
Snow Flurries Mostly Sunny Partly Sunny Snow Mostly Sunny Snow Partly Sunny
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Current Conditions at
PERU - (KVYS)
25°
Feels like 12°F
Cloudy
Light Snow
as of 3:39 AM CST
Rel. Humidity: 68%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.20 in.
Flight Rule: VFR
Wind Data
15 MPH
Gust: 21 MPH
300° Northwest
Cloud Level(s): Scattered at 2500ft, Solid Overcast at 3700ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
23°
Feels like 7°F
Cloudy
Light Snow
as of 3:35 AM CST
Rel. Humidity: 73%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
21 MPH
Gust: 29 MPH
320° Northwest
Cloud Level(s): Scattered at 2200ft, Broken at 4100ft, Solid Overcast at 5000ft
Current Conditions at
AURORA - (KARR)
21°
Feels like 6°F
Cloudy
as of 2:52 AM CST
Rel. Humidity: 73%
Dew Point: 14°F
Visibility: 9 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
17 MPH
Gust: 29 MPH
310° Northwest
Cloud Level(s): Few at 2500ft, Few at 3400ft, Solid Overcast at 4100ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
23°
Feels like 7°F
Cloudy
as of 3:35 AM CST
Rel. Humidity: 73%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.19 in.
Flight Rule: MVFR
Wind Data
22 MPH
Gust: 28 MPH
290° West
Cloud Level(s): Broken at 2300ft, Broken at 2700ft, Solid Overcast at 4800ft
30% chance of snow Overnight Overnight... A chance of snow showers before 4am, then scattered flurries with a slight chance of snow showers after 4am. Mostly cloudy, with a low around 22. Blustery, with a west northwest wind around 25 mph, with gusts as high as 35 mph. Chance of precipitation is 30%.
Flurries on Sunday Sunday... Scattered flurries before 9am. Partly sunny, with a high near 33. Breezy, with a west northwest wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 35 mph.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 26. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 42. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 33. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
20% chance of Tuesday Tuesday... A 20 percent chance of showers before 3pm. Partly sunny, with a high near 50.
20% chance of rain & snow Tuesday Night Tuesday Night... A slight chance of rain and snow showers after 3am. Mostly cloudy, with a low around 32. Chance of precipitation is 20%.
20% chance of snow Wednesday Wednesday... A chance of snow showers. Mostly cloudy, with a high near 34. Breezy.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 17.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 28.
20% chance of snow Thursday Night Thursday Night... A chance of snow. Mostly cloudy, with a low around 23.
20% chance of snow Friday Friday... A chance of snow showers. Mostly cloudy, with a high near 34.
20% chance of snow Friday Night Friday Night... A chance of snow showers. Mostly cloudy, with a low around 19.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 25.
Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:20 AM
Sunset: 4:46 PM
Civil Sunrise:06:50 AM
Civil Sunset: 5:17 PM
Nautical Sunrise: 06:15 AM
Nautical Sunset: 5:51 PM
Astro Sunrise: 05:42 AM
Astro Sunset: 6:24 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.