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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 1:31 pm CST Jan 24, 2026 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Sunday Monday Tuesday Wednesday Thursday Friday
40% chance of snow on This Afternoon 70% chance of snow on Tonight 60% chance of snow on Sunday Sunny on Monday Partly Sunny on Tuesday 20% chance of snow on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday
High: 8 °F Low: 6 °F High: 14°F High: 11°F High: 20°F High: 16°F High: 15°F High: 18°F
Low: -2°F Low: 5°F Low: 3°F Low: 2°F Low: 3°F  
Snow Snow Snow Sunny Partly Sunny Snow Mostly Sunny Mostly Sunny
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Current Conditions at
PERU - (KVYS)
Cloudy
Light Snow
as of 1:55 PM CST
Visibility: 3 Miles
Pressure: 30.57 in.
Flight Rule: MVFR
Wind Data
8 MPH
040° Northeast
Cloud Level(s): Scattered at 2400ft, Solid Overcast at 3200ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
Cloudy
Haze
as of 1:55 PM CST
Rel. Humidity: 46%
Dew Point: -11°F
Visibility: 5 Miles
Pressure: 30.58 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Broken at 2800ft, Solid Overcast at 3400ft
Current Conditions at
AURORA - (KARR)
Cloudy
Light Snow
as of 1:52 PM CST
Rel. Humidity: 38%
Dew Point: -15°F
Visibility: 4 Miles
Pressure: 30.56 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Broken at 4600ft, Solid Overcast at 6000ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
Feels like -9°F
Cloudy
as of 1:55 PM CST
Rel. Humidity: 46%
Dew Point: -9°F
Visibility: 10 Miles
Pressure: 30.55 in.
Flight Rule: VFR
Wind Data
13 MPH
060° Northeast
Cloud Level(s): Solid Overcast at 7000ft
40% chance of snow This Afternoon This Afternoon... A 40 percent chance of snow, mainly after 4pm. Cloudy and cold, with a high near 8. Wind chill values as low as -5. East wind around 5 mph.

70% chance of snow Tonight Tonight... Snow likely. Cloudy, with a low around 6. Wind chill values as low as -7. East northeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

60% chance of snow Sunday Sunday... Snow likely, mainly before noon. Cloudy, with a high near 14. Wind chill values as low as -8. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Cloudy on Sunday Night Sunday Night... 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 20 mph.

Sunny on Monday Monday... Sunny, with a high near 11. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 5.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 20.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 3.

20% chance of snow Wednesday Wednesday... A chance of snow after noon. Partly sunny, with a high near 16.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 2.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 15.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 3.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 18.

Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:13 AM
Sunset: 5:01 PM
Civil Sunrise:06:43 AM
Civil Sunset: 5:31 PM
Nautical Sunrise: 06:10 AM
Nautical Sunset: 6:05 PM
Astro Sunrise: 05:37 AM
Astro Sunset: 6:37 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.