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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 11:51 pm CST Jan 22, 2026 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
Overnight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
Flurries on Overnight Mostly Sunny on Friday 50% chance of snow on Saturday 60% chance of snow on Sunday Mostly Sunny on Monday Partly Sunny on Tuesday Mostly Sunny on Wednesday Mostly Sunny on Thursday
Low: -9°F High: 1 °F High: 10°F High: 15°F High: 13°F High: 21°F High: 16°F High: 11°F
Low: -6°F Low: 7 °F Low: -1°F Low: 4°F Low: 7°F Low: 1°F  
Flurries Mostly Sunny Snow Snow Mostly Sunny Partly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
PERU - (KVYS)
Feels like -15°F
Clear
as of 12:40 AM CST
Rel. Humidity: 41%
Dew Point: -15°F
Visibility: 10 Miles
Pressure: 30.44 in.
Flight Rule: VFR
Wind Data
16 MPH
Gust: 22 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
Feels like -14°F
Clear
as of 12:35 AM CST
Rel. Humidity: 35%
Dew Point: -15°F
Visibility: 10 Miles
Pressure: 30.37 in.
Flight Rule: VFR
Wind Data
24 MPH
Gust: 29 MPH
310° Northwest
Cloud Level(s): Clear
Current Conditions at
AURORA - (KARR)
Feels like -14°F
Clear
as of 11:52 PM CST
Rel. Humidity: 46%
Dew Point: -11°F
Visibility: 9 Miles
Pressure: 30.35 in.
Flight Rule: VFR
Wind Data
18 MPH
Gust: 30 MPH
310° Northwest
Cloud Level(s): Clear
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
Feels like -12°F
Clear
as of 12:35 AM CST
Rel. Humidity: 42%
Dew Point: -9°F
Visibility: 10 Miles
Pressure: 30.40 in.
Flight Rule: VFR
Wind Data
25 MPH
Gust: 35 MPH
310° Northwest
Cloud Level(s): Clear
Flurries on Overnight Overnight... Scattered flurries. Partly cloudy, with a low around -9. Wind chill values as low as -29. Blustery, with a northwest wind around 20 mph, with gusts as high as 30 mph.

Mostly Sunny on Friday Friday... Mostly sunny and cold, with a high near 1. Wind chill values as low as -31. Blustery, with a north northwest wind 10 to 20 mph, with gusts as high as 30 mph.

Increasing Clouds on Friday Night Friday Night... Increasing clouds, with a low around -6. Wind chill values as low as -19. North wind 5 to 10 mph.

50% chance of snow Saturday Saturday... A 50 percent chance of snow, mainly after noon. Cloudy and cold, with a high near 10. Wind chill values as low as -19. East northeast wind around 5 mph, with gusts as high as 10 mph.

60% chance of snow Saturday Night Saturday Night... Snow likely. Cloudy, with a low around 7. East northeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.

60% chance of snow Sunday Sunday... Snow likely, mainly before noon. Mostly cloudy, with a high near 15. Chance of precipitation is 60%.

30% chance of snow Sunday Night Sunday Night... A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around -1.

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

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 4.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 21.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 7.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 16.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 1.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 11.

Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:14 AM
Sunset: 5:00 PM
Civil Sunrise:06:44 AM
Civil Sunset: 5:30 PM
Nautical Sunrise: 06:11 AM
Nautical Sunset: 6:04 PM
Astro Sunrise: 05:38 AM
Astro Sunset: 6:36 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.