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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 pm CST Jan 12, 2026 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
Tonight Tuesday Wednesday Thursday Friday Saturday Sunday M.L.King Day
Increasing Clouds on Tonight Partly Sunny on Tuesday 20% chance of snow on Wednesday Mostly Sunny on Thursday Snow on Friday 20% chance of snow on Saturday Partly Sunny on Sunday Partly Sunny on M.L.King Day
Low: 35°F High: 50°F High: 31°F High: 26°F High: 34°F High: 19°F High: 16°F High: 21°F
Low: 29°F Low: 15°F Low: 21°F Low: 15°F Low: 5°F Low: 7°F  
Increasing Clouds Partly Sunny Snow Mostly Sunny Snow Snow Partly Sunny Partly Sunny
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Current Conditions at
PERU - (KVYS)
39°
Feels like 33°F
Clear
as of 3:59 PM CST
Rel. Humidity: 69%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 30.11 in.
Flight Rule: VFR
Wind Data
9 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
39°
Feels like 33°F
Clear
as of 3:55 PM CST
Rel. Humidity: 69%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
9 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
AURORA - (KARR)
39°
Clear
as of 3:52 PM CST
Rel. Humidity: 69%
Dew Point: 30°F
Visibility: 8 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
8 MPH
230° Southwest
Cloud Level(s): Clear
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
39°
Clear
as of 3:55 PM CST
Rel. Humidity: 69%
Dew Point: 30°F
Pressure: 30.13 in.
Wind Data
6 MPH
220° Southwest
Cloud Level(s): Clear
Increasing Clouds on Tonight Tonight... Increasing clouds, with a steady temperature around 35. South southwest wind 5 to 15 mph.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 50. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 29. West wind 10 to 15 mph, with gusts as high as 25 mph.

20% chance of snow Wednesday Wednesday... A 20 percent chance of snow showers. Mostly cloudy, with a high near 31. Blustery, with a north northwest wind 15 to 25 mph, with gusts as high as 35 mph.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 15. Blustery, with a north northwest wind 10 to 20 mph, with gusts as high as 30 mph.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 26.

60% chance of snow Thursday Night Thursday Night... Snow likely, mainly after midnight. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.

Snow on Friday Friday... Snow likely, mainly after noon. Cloudy, with a high near 34.

20% chance of snow Friday Night Friday Night... A chance of snow. Mostly cloudy, with a low around 15.

20% chance of snow Saturday Saturday... A chance of snow after noon. Mostly cloudy, with a high near 19.

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 5.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 16.

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

Partly Sunny on M.L.King Day M.L.King Day... Partly sunny, with a high near 21.

Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:20 AM
Sunset: 4:47 PM
Civil Sunrise:06:49 AM
Civil Sunset: 5:18 PM
Nautical Sunrise: 06:15 AM
Nautical Sunset: 5:52 PM
Astro Sunrise: 05:42 AM
Astro Sunset: 6:25 PM
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