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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : Henry County
Issued: 9:41 pm CST Jan 20, 2026 Latitude: 41.4892011 Longitude: -90.3215147 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
50% chance of snow on Overnight 30% chance of snow on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday Mostly Cloudy on Saturday Partly Sunny on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday
Low: 23°F High: 32°F High: 24°F High: -1°F High: 7°F High: 14°F High: 18°F High: 28°F
Low: 13°F Low: -8°F Low: -8°F Low: 0°F Low: -1°F Low: 7°F  
Snow Snow Mostly Sunny Mostly Sunny Mostly Cloudy Partly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
MOLINE - (KMLI)
27°
Cloudy
as of 11:52 PM CST
Rel. Humidity: 58%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: VFR
Wind Data
6 MPH
070° East
Cloud Level(s): Solid Overcast at 8000ft
Current Conditions at
DAVENPORT - (KDVN)
25°
Feels like 15°F
Cloudy
as of 11:52 PM CST
Rel. Humidity: 68%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.03 in.
Flight Rule: VFR
Wind Data
9 MPH
050° Northeast
Cloud Level(s): Scattered at 6500ft, Solid Overcast at 11000ft
Current Conditions at
CLINTON - (KCWI)
21°
Feels like 10°F
Cloudy
as of 11:56 PM CST
Rel. Humidity: 92%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
9 MPH
050° Northeast
Cloud Level(s): Broken at 7000ft, Broken at 8500ft, Solid Overcast at 10000ft
Current Conditions at
STERLING ROCK - (KSQI)
25°
Clear
as of 11:56 PM CST
Rel. Humidity: 85%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.06 in.
Flight Rule: VFR
Wind Data
7 MPH
090° East
Cloud Level(s): Clear
50% chance of snow Overnight Overnight... A 50 percent chance of snow, mainly before 5am. Cloudy, with a steady temperature around 23. Southeast wind 5 to 10 mph becoming west. Total nighttime snow accumulation of less than a half inch possible.
30% chance of snow Wednesday Wednesday... A 30 percent chance of snow, mainly after 5pm. Mostly sunny, with a high near 32. West wind 10 to 15 mph, with gusts as high as 25 mph.
30% chance of snow Wednesday Night Wednesday Night... A chance of snow before 9pm, then a chance of flurries between 9pm and 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 13. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 24. West wind 10 to 15 mph, with gusts as high as 20 mph.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around -8.
Mostly Sunny on Friday Friday... Mostly sunny and cold, with a high near -1.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around -8.
Mostly Cloudy on Saturday Saturday... Mostly cloudy and cold, with a high near 7.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 0.
Partly Sunny on Sunday Sunday... Partly sunny, with a high near 14.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around -1.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 18.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 7.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 28.
Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:22 AM
Sunset: 5:03 PM
Civil Sunrise:06:52 AM
Civil Sunset: 5:34 PM
Nautical Sunrise: 06:18 AM
Nautical Sunset: 6:07 PM
Astro Sunrise: 05:45 AM
Astro Sunset: 6:40 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.