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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 12:06 pm CST Jan 7, 2026 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Thursday Friday Saturday Sunday Monday Tuesday
Mostly Sunny on This Afternoon Increasing Clouds on Tonight 90% chance of rain on Thursday 20% chance of rain on Friday 60% chance of rain & snow on Saturday Partly Sunny on Sunday Mostly Sunny on Monday Partly Sunny on Tuesday
High: 46°F Low: 38°F High: 57°F High: 49°F High: 39°F High: 29°F High: 38°F High: 41°F
Low: 44°F Low: 36°F Low: 21°F Low: 21°F Low: 28°F  
Mostly Sunny Increasing Clouds Rain Rain Rain & Snow Partly Sunny Mostly Sunny Partly Sunny
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Current Conditions at
PERU - (KVYS)
39°
Partly Cloudy
as of 12:59 PM CST
Rel. Humidity: 93%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
8 MPH
140° Southeast
Cloud Level(s): Scattered at 600ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
37°
Cloudy
as of 12:55 PM CST
Rel. Humidity: 86%
Dew Point: 34°F
Visibility: 7 Miles
Pressure: 29.93 in.
Flight Rule: IFR
Wind Data
6 MPH
190° South
Cloud Level(s): Solid Overcast at 700ft
Current Conditions at
AURORA - (KARR)
36°
Feels like 28°F
Cloudy
Mist
as of 1:13 PM CST
Rel. Humidity: 93%
Dew Point: 34°F
Visibility: 3 Miles
Pressure: 29.92 in.
Flight Rule: LIFR
Wind Data
9 MPH
190° South
Cloud Level(s): Solid Overcast at 400ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
45°
Clear
as of 12:55 PM CST
Rel. Humidity: 75%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
6 MPH
170° South
Cloud Level(s): Clear
Mostly Sunny on This Afternoon This Afternoon... Mostly sunny, with a high near 46. South southeast wind around 10 mph, with gusts as high as 15 mph.

Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 38. South wind 5 to 10 mph, with gusts as high as 15 mph.

90% chance of rain Thursday Thursday... Rain, mainly after noon. High near 57. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

90% chance of thunderstorms Thursday Night Thursday Night... Rain and possibly a thunderstorm before midnight, then a chance of rain and thunderstorms between midnight and 3am, then a chance of rain after 3am. Low around 44. Breezy, with a south southeast wind 10 to 20 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%.

20% chance of rain Friday Friday... A 20 percent chance of rain. Mostly cloudy, with a high near 49. West wind 5 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 15 mph.

50% chance of rain Friday Night Friday Night... A 50 percent chance of rain after midnight. Mostly cloudy, with a low around 36.

60% chance of rain & snow Saturday Saturday... Rain likely, possibly mixed with snow, mainly before noon. Mostly cloudy, with a high near 39. Chance of precipitation is 60%.

20% chance of snow Saturday Night Saturday Night... A chance of snow. Mostly cloudy, with a low around 21.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 29.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 21.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 38.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 28.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 41.

Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:21 AM
Sunset: 4:42 PM
Civil Sunrise:06:50 AM
Civil Sunset: 5:13 PM
Nautical Sunrise: 06:16 AM
Nautical Sunset: 5:47 PM
Astro Sunrise: 05:42 AM
Astro Sunset: 6:21 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.