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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : Henry County
Issued: 5:16 am CST Jan 20, 2026 Latitude: 41.4892011 Longitude: -90.3215147 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday Monday
Increasing Clouds on Today 50% chance of snow on Tonight Mostly Sunny on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday Mostly Cloudy on Saturday Mostly Sunny on Sunday Sunny on Monday
High: 27°F Low: 29 °F High: 33°F High: 24°F High: 1°F High: 6°F High: 17°F High: 21°F
Low: 12°F Low: -7°F Low: -7°F Low: -2°F Low: 1°F  
Increasing Clouds Snow Mostly Sunny Mostly Sunny Mostly Sunny Mostly Cloudy Mostly Sunny Sunny
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Current Conditions at
MOLINE - (KMLI)
3°
Clear
as of 4:52 AM CST
Rel. Humidity: 77%
Dew Point: -2°F
Visibility: 10 Miles
Pressure: 30.35 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
DAVENPORT - (KDVN)
5°
Clear
as of 4:52 AM CST
Rel. Humidity: 71%
Dew Point: -2°F
Visibility: 10 Miles
Pressure: 30.33 in.
Flight Rule: VFR
Wind Data
6 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
CLINTON - (KCWI)
1°
Clear
as of 4:56 AM CST
Rel. Humidity: 84%
Dew Point: -2°F
Visibility: 10 Miles
Pressure: 30.35 in.
Flight Rule: VFR
Wind Data
5 MPH
270° West
Cloud Level(s): Clear
Current Conditions at
STERLING ROCK - (KSQI)
3°
Clear
as of 4:56 AM CST
Rel. Humidity: 77%
Dew Point: -2°F
Visibility: 10 Miles
Pressure: 30.36 in.
Flight Rule: VFR
Wind Data
7 MPH
230° Southwest
Cloud Level(s): Clear
Increasing Clouds on Today Today... Increasing clouds, with a high near 27. Wind chill values as low as -10. Southwest wind 5 to 10 mph.
50% chance of snow Tonight Tonight... A 50 percent chance of snow, mainly between 8pm and 5am. Cloudy, with a temperature rising to around 29 by midnight. Southeast wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph. New snow accumulation of less than a half inch possible.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 33. West wind 10 to 15 mph, with gusts as high as 30 mph.
30% chance of snow Wednesday Night Wednesday Night... A 30 percent chance of snow showers before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 12. Wind chill values as low as zero. Southwest wind 10 to 15 mph becoming northwest in the evening. Winds could gust as high as 35 mph.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 24.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around -7.
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 -7.
Mostly Cloudy on Saturday Saturday... Mostly cloudy and cold, with a high near 6.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around -2.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 17.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 1.
Sunny on Monday Monday... Sunny, with a high near 21.
Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:22 AM
Sunset: 5:02 PM
Civil Sunrise:06:52 AM
Civil Sunset: 5:32 PM
Nautical Sunrise: 06:18 AM
Nautical Sunset: 6:06 PM
Astro Sunrise: 05:45 AM
Astro Sunset: 6:39 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.