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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 12:11 am CST Dec 25, 2025 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

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Overnight Christmas Day Friday Saturday Sunday Monday Tuesday Wednesday
20% chance of on Overnight Cloudy on Christmas Day 20% chance of rain on Friday Mostly Cloudy on Saturday 20% chance of rain on Sunday Sunny on Monday Partly Sunny on Tuesday Partly Sunny on Wednesday
Low: 40°F High: 44°F High: 50°F High: 51°F High: 45°F High: 23°F High: 30°F High: 31°F
Low: 41°F Low: 39°F Low: 44°F Low: 14°F Low: 14°F Low: 19°F  
Morning Fog Cloudy Rain Mostly Cloudy Rain Sunny Partly Sunny Partly Sunny
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Current Conditions at
PERU - (KVYS)
41°
Cloudy
Fog
as of 11:55 PM CST
Rel. Humidity: 100%
Dew Point: 41°F
Visibility: 1/4 Miles
Pressure: 30.06 in.
Flight Rule: LIFR
Wind Data
5 MPH
020° North
Cloud Level(s): Solid Overcast at 200ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
43°
Cloudy
as of 11:55 PM CST
Rel. Humidity: 86%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 30.04 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 500ft
Current Conditions at
AURORA - (KARR)
43°
Cloudy
Haze
as of 11:52 PM CST
Rel. Humidity: 75%
Dew Point: 36°F
Visibility: 6 Miles
Pressure: 30.05 in.
Flight Rule: IFR
Wind Data
7 MPH
030° Northeast
Cloud Level(s): Solid Overcast at 800ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
46°
Cloudy
Fog
as of 11:55 PM CST
Rel. Humidity: 100%
Dew Point: 46°F
Visibility: Less than 1/4 Miles
Pressure: 30.04 in.
Flight Rule: LIFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 300ft
20% chance of Overnight Overnight... A chance of drizzle, mainly before 2am. Patchy fog before 5am. Otherwise, cloudy, with a low around 40. North northeast wind around 5 mph, with gusts as high as 10 mph.
Cloudy on Christmas Day Christmas Day... Cloudy, with a high near 44. East northeast wind 10 to 15 mph, with gusts as high as 20 mph.
70% chance of rain Thursday Night Thursday Night... Rain likely, mainly after midnight. Cloudy, with a low around 41. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
20% chance of rain Friday Friday... A 20 percent chance of rain before noon. Mostly cloudy, with a high near 50. Southeast wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 15 mph.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 39. Northwest wind around 5 mph becoming calm in the evening.
Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 51.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 44.
20% chance of rain Sunday Sunday... A chance of rain after noon. Cloudy, with a high near 45. Breezy.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 14. Blustery.
Sunny on Monday Monday... Sunny, with a high near 23. Blustery.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 14.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 30.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 19.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 31.
Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:20 AM
Sunset: 4:31 PM
Civil Sunrise:06:48 AM
Civil Sunset: 5:03 PM
Nautical Sunrise: 06:14 AM
Nautical Sunset: 5:37 PM
Astro Sunrise: 05:40 AM
Astro Sunset: 6:11 PM
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