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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 10:06 pm CST Jan 2, 2026 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
Tonight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
Cloudy on Tonight Partly Sunny on Saturday Increasing Clouds on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday Mostly Sunny on Wednesday 20% chance of rain on Thursday 20% chance of rain on Friday
Low: 20°F High: 31°F High: 31°F High: 45°F High: 50°F High: 50°F High: 52°F High: 50°F
Low: 17°F Low: 27°F Low: 34°F Low: 32°F Low: 38°F Low: 41°F  
Cloudy Partly Sunny Increasing Clouds Mostly Sunny Mostly Sunny Mostly Sunny Rain Rain
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Current Conditions at
PERU - (KVYS)
23°
Clear
as of 10:55 PM CST
Rel. Humidity: 73%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.04 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
21°
Clear
as of 10:55 PM CST
Rel. Humidity: 73%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.03 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
AURORA - (KARR)
19°
Clear
as of 10:52 PM CST
Rel. Humidity: 73%
Dew Point: 12°F
Visibility: 8 Miles
Pressure: 30.02 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
23°
Clear
as of 10:55 PM CST
Rel. Humidity: 67%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.04 in.
Flight Rule: VFR
Wind Data
5 MPH
010° North
Cloud Level(s): Clear
Cloudy on Tonight Tonight... Cloudy, with a low around 20. Calm wind becoming north around 5 mph.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 31. Calm wind becoming west northwest around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 17. Northwest wind around 5 mph becoming calm after midnight. Winds could gust as high as 10 mph.
Increasing Clouds on Sunday Sunday... Increasing clouds, with a high near 31. Calm wind becoming south southeast around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 27. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 45.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 34.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 50.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 32.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 50.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 38.
20% chance of rain Thursday Thursday... A chance of rain. Mostly cloudy, with a high near 52.
70% chance of rain Thursday Night Thursday Night... Rain likely. Mostly cloudy, with a low around 41.
20% chance of rain Friday Friday... A chance of rain. Mostly cloudy, with a high near 50.
Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:21 AM
Sunset: 4:38 PM
Civil Sunrise:06:50 AM
Civil Sunset: 5:09 PM
Nautical Sunrise: 06:16 AM
Nautical Sunset: 5:44 PM
Astro Sunrise: 05:42 AM
Astro Sunset: 6:17 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.