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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 11:36 pm CST Jan 23, 2026 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
Overnight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
Mostly Cloudy on Overnight 40% chance of snow on Saturday 70% chance of snow on Sunday Sunny on Monday Partly Sunny on Tuesday Partly Sunny on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday
Low: -6°F High: 9 °F High: 15°F High: 10°F High: 21°F High: 14°F High: 14°F High: 19°F
Low: 7 °F Low: 0 °F Low: 4°F Low: 3°F Low: 2°F Low: 2°F  
Mostly Cloudy Snow Snow Sunny Partly Sunny Partly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
PERU - (KVYS)
-6°
Partly Cloudy
as of 1:19 AM CST
Rel. Humidity: 48%
Dew Point: -20°F
Visibility: 10 Miles
Pressure: 30.77 in.
Flight Rule: VFR
Wind Data
6 MPH
0° North
Cloud Level(s): Scattered at 12000ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
-6°
Clear
as of 1:15 AM CST
Rel. Humidity: 48%
Dew Point: -20°F
Visibility: 10 Miles
Pressure: 30.76 in.
Flight Rule: VFR
Wind Data
5 MPH
0° North
Cloud Level(s): Clear
Current Conditions at
AURORA - (KARR)
-8°
Clear
as of 12:52 AM CST
Rel. Humidity: 48%
Dew Point: -22°F
Visibility: 8 Miles
Pressure: 30.74 in.
Flight Rule: VFR
Wind Data
8 MPH
010° North
Cloud Level(s): Clear
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
-6°
Feels like -22°F
Clear
as of 1:15 AM CST
Rel. Humidity: 44%
Dew Point: -22°F
Visibility: 10 Miles
Pressure: 30.75 in.
Flight Rule: VFR
Wind Data
9 MPH
0° North
Cloud Level(s): Clear
Mostly Cloudy on Overnight Overnight... Mostly cloudy, with a low around -6. Wind chill values as low as -18. North wind around 5 mph.

40% chance of snow Saturday Saturday... A 40 percent chance of snow, mainly after 3pm. Cloudy and cold, with a high near 9. Wind chill values as low as -17. North wind around 5 mph becoming east in the afternoon.

80% chance of snow Saturday Night Saturday Night... Snow. Low around 7. Wind chill values as low as -6. Northeast wind 5 to 10 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

70% chance of snow Sunday Sunday... Snow likely, mainly before noon. Cloudy, with a high near 15. Wind chill values as low as -5. North wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

20% chance of snow Sunday Night Sunday Night... A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 0. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.

Sunny on Monday Monday... Sunny and cold, with a high near 10.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 4.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 21.

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

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 14.

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

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 14.

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

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 19.

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.