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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 8:36 pm CST Nov 28, 2025 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
Tonight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
90% chance of snow on Tonight 100% chance of blowing snow on Saturday 40% chance of blowing snow on Sunday 40% chance of snow on Monday Partly Sunny on Tuesday Mostly Cloudy on Wednesday Mostly Sunny on Thursday Partly Sunny on Friday
Low: 24°F High: 31°F High: 27°F High: 20°F High: 21°F High: 29°F High: 18°F High: 26°F
Low: 26°F Low: 6 °F Low: 12°F Low: 13°F Low: 8°F Low: 4°F  
Snow Blowing Snow Blowing Snow Snow Partly Sunny Mostly Cloudy Mostly Sunny Partly Sunny
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Current Conditions at
PERU - (KVYS)
28°
Mostly Cloudy
as of 8:15 PM CST
Rel. Humidity: 63%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.37 in.
Flight Rule: VFR
Wind Data
3 MPH
130° Southeast
Cloud Level(s): Broken at 12000ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
25°
Clear
as of 8:15 PM CST
Rel. Humidity: 73%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.38 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
AURORA - (KARR)
19°
Clear
as of 7:52 PM CST
Rel. Humidity: 85%
Dew Point: 16°F
Visibility: 8 Miles
Pressure: 30.36 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
25°
Mostly Cloudy
as of 8:15 PM CST
Rel. Humidity: 73%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.39 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Broken at 11000ft
90% chance of snow Tonight Tonight... Snow, mainly after 4am. Low around 24. Light southeast wind increasing to 5 to 10 mph after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than one inch possible.
100% chance of blowing snow Saturday Saturday... Snow. The snow could be heavy at times. Patchy blowing snow after noon. High near 31. Breezy, with a southeast wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
100% chance of blowing snow Saturday Night Saturday Night... Snow. Patchy blowing snow before 9pm, then patchy blowing snow after 3am. Low around 26. Blustery, with a southeast wind 10 to 20 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
40% chance of blowing snow Sunday Sunday... A chance of snow before noon, then a slight chance of snow showers after noon. Patchy blowing snow before 3pm. Mostly cloudy, with a high near 27. Blustery, with a west northwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 6. West northwest wind 5 to 10 mph becoming light north northwest after midnight. Winds could gust as high as 15 mph.
40% chance of snow Monday Monday... A 40 percent chance of snow after noon. Cloudy, with a high near 20.
50% chance of snow Monday Night Monday Night... A 50 percent chance of snow before midnight. Mostly cloudy, with a low around 12.
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 13.
Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 29.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 8.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 18.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 4.
Partly Sunny on Friday Friday... Partly sunny, with a high near 26.
Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 06:59 AM
Sunset: 4:27 PM
Civil Sunrise:06:29 AM
Civil Sunset: 4:58 PM
Nautical Sunrise: 05:54 AM
Nautical Sunset: 5:32 PM
Astro Sunrise: 05:21 AM
Astro Sunset: 6:05 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.