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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 4:01 am CST Jan 25, 2026 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday Thursday Friday Saturday
50% chance of snow on Today Cloudy on Tonight Sunny on Monday Partly Sunny on Tuesday 20% chance of snow on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday Mostly Sunny on Saturday
High: 14°F Low: -2°F High: 10°F High: 17°F High: 15°F High: 14°F High: 18°F High: 21°F
Low: 4 °F Low: 0°F Low: -1°F Low: 2°F Low: 3°F  
Snow Cloudy Sunny Partly Sunny Snow Mostly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
PERU - (KVYS)
5°
Feels like -13°F
Cloudy
Light Snow
as of 8:00 AM CST
Rel. Humidity: 77%
Dew Point: -0°F
Visibility: 3 Miles
Pressure: 30.17 in.
Flight Rule: MVFR
Wind Data
16 MPH
0° North
Cloud Level(s): Scattered at 4100ft, Broken at 4800ft, Solid Overcast at 5000ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
7°
Cloudy
Light Snow
as of 7:55 AM CST
Rel. Humidity: 84%
Dew Point: 3°F
Visibility: 1 3/4 Miles
Pressure: 30.18 in.
Flight Rule: IFR
Wind Data
6 MPH
0° North
Cloud Level(s): Solid Overcast at 2200ft
Current Conditions at
AURORA - (KARR)
7°
Feels like -10°F
Cloudy
Light Snow Mist
as of 7:52 AM CST
Rel. Humidity: 84%
Dew Point: 3°F
Visibility: 1 Miles
Pressure: 30.17 in.
Flight Rule: IFR
Wind Data
15 MPH
010° North
Cloud Level(s): Solid Overcast at 2600ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
7°
Feels like -10°F
Cloudy
as of 7:55 AM CST
Rel. Humidity: 77%
Dew Point: 1°F
Visibility: 2 1/2 Miles
Pressure: 30.16 in.
Flight Rule: IFR
Wind Data
15 MPH
0° North
Cloud Level(s): Broken at 2600ft, Solid Overcast at 3200ft
50% chance of snow Today Today... A 50 percent chance of snow, mainly before 1pm. Cloudy, with a high near 14. Wind chill values as low as -10. North wind 10 to 15 mph, with gusts as high as 25 mph.
Cloudy on Tonight Tonight... Partly cloudy, with a low around -2. Wind chill values as low as -19. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunny on Monday Monday... Sunny and cold, with a high near 10. Wind chill values as low as -20. West northwest wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 4. Wind chill values as low as -13. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 17. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 0.
20% chance of snow Wednesday Wednesday... A 20 percent chance of snow after noon. Partly sunny, with a high near 15.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around -1.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 14.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 2.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 18.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 3.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 21.
Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:13 AM
Sunset: 5:03 PM
Civil Sunrise:06:43 AM
Civil Sunset: 5:32 PM
Nautical Sunrise: 06:09 AM
Nautical Sunset: 6:06 PM
Astro Sunrise: 05:37 AM
Astro Sunset: 6:39 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.