Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : LaSalle County
Issued: 4:11 pm CDT Sep 16, 2025 Latitude: 41.3847551 Longitude: -88.7942425 View on Google Maps

MouseOver for Detail Forecast
Tonight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Morning Fog on Tonight Morning Fog on Wednesday Sunny on Thursday 20% chance of rain on Friday Partly Sunny on Saturday 20% chance of on Sunday 20% chance of on Monday Sunny on Tuesday
Low: 56°F High: 86°F High: 89°F High: 86°F High: 83°F High: 83°F High: 81°F High: 81°F
Low: 57°F Low: 61°F Low: 62°F Low: 64°F Low: 64°F Low: 61°F  
Morning Fog Morning Fog Sunny Rain Partly Sunny Partly Sunny Partly Sunny Sunny
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Current Conditions at
PERU - (KVYS)
75°
Clear
as of 7:35 PM CDST
Rel. Humidity: 53%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
6 MPH
070° East
Cloud Level(s): Clear
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
72°
Clear
as of 7:35 PM CDST
Rel. Humidity: 64%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
5 MPH
090° East
Cloud Level(s): Clear
Current Conditions at
AURORA - (KARR)
75°
Clear
as of 6:52 PM CDST
Rel. Humidity: 53%
Dew Point: 57°F
Visibility: 8 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
7 MPH
100° East
Cloud Level(s): Clear
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
72°
Clear
as of 7:35 PM CDST
Rel. Humidity: 56%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
7 MPH
070° East
Cloud Level(s): Clear
Morning Fog on Tonight Tonight... Patchy fog after 4am. Otherwise, mostly clear, with a low around 56. East wind around 5 mph becoming calm in the evening.
Morning Fog on Wednesday Wednesday... Patchy fog before 8am. Otherwise, sunny, with a high near 86. Calm wind becoming east northeast around 5 mph in the afternoon.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 57. East northeast wind around 5 mph becoming calm in the evening.
Sunny on Thursday Thursday... Sunny, with a high near 89. Calm wind becoming southeast around 5 mph.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 61. East wind around 5 mph, with gusts as high as 10 mph.
20% chance of rain Friday Friday... A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 86.
30% chance of thunderstorms Friday Night Friday Night... A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 83.
20% chance of rain Saturday Night Saturday Night... A chance of showers after 1am. Mostly cloudy, with a low around 64.
20% chance of Sunday Sunday... A chance of showers after 1pm. Partly sunny, with a high near 83.
20% chance of rain Sunday Night Sunday Night... A chance of showers. Mostly cloudy, with a low around 64.
20% chance of Monday Monday... A chance of showers. Partly sunny, with a high near 81.
20% chance of rain Monday Night Monday Night... A chance of showers. Partly cloudy, with a low around 61.
Sunny on Tuesday Tuesday... Sunny, with a high near 81.
Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 06:37 AM
Sunset: 7:03 PM
Civil Sunrise:06:09 AM
Civil Sunset: 7:30 PM
Nautical Sunrise: 05:37 AM
Nautical Sunset: 8:03 PM
Astro Sunrise: 05:03 AM
Astro Sunset: 8:36 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.