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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : Henry County
Issued: 8:51 pm CST Dec 26, 2025 Latitude: 41.4892011 Longitude: -90.3215147 View on Google Maps

MouseOver for Detail Forecast
Tonight Saturday Sunday Monday Tuesday Wednesday New Year's Day Friday
Morning Fog on Tonight Fog on Saturday 80% chance of thunderstorms on Sunday Partly Sunny on Monday Mostly Sunny on Tuesday Partly Sunny on Wednesday Sunny on New Year's Day Mostly Sunny on Friday
Low: 38°F High: 50°F High: 54°F High: 21°F High: 31°F High: 30°F High: 18°F High: 22°F
Low: 55 °F Low: 13°F Low: 12°F Low: 21°F Low: 8°F Low: 4°F  
Morning Fog Fog Thunderstorms Partly Sunny Mostly Sunny Partly Sunny Sunny Mostly Sunny
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Current Conditions at
MOLINE - (KMLI)
37°
Cloudy
as of 9:17 PM CST
Rel. Humidity: 93%
Dew Point: 36°F
Visibility: 7 Miles
Pressure: 29.94 in.
Flight Rule: LIFR
Wind Data
3 MPH
280° West
Cloud Level(s): Solid Overcast at 400ft
Current Conditions at
DAVENPORT - (KDVN)
37°
Cloudy
Mist
as of 9:18 PM CST
Rel. Humidity: 100%
Dew Point: 37°F
Visibility: 1 1/2 Miles
Pressure: 29.94 in.
Flight Rule: LIFR
Wind Data
3 MPH
010° North
Cloud Level(s): Solid Overcast at 200ft
Current Conditions at
CLINTON - (KCWI)
37°
Cloudy
Mist
as of 8:56 PM CST
Rel. Humidity: 100%
Dew Point: 37°F
Visibility: 1 1/2 Miles
Pressure: 29.95 in.
Flight Rule: LIFR
Wind Data
5 MPH
260° West
Cloud Level(s): Solid Overcast at 300ft
Current Conditions at
STERLING ROCK - (KSQI)
39°
Mostly Cloudy
as of 9:30 PM CST
Rel. Humidity: 100%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: IFR
Wind Data
7 MPH
340° North
Cloud Level(s): Broken at 600ft
Morning Fog on Tonight Tonight... Widespread dense fog, mainly after 3am. Otherwise, cloudy, with a low around 38. Calm wind becoming southeast around 5 mph after midnight.
Fog on Saturday Saturday... Areas of dense fog before noon. Otherwise, cloudy, with a high near 50. Southeast wind 5 to 10 mph.
30% chance of thunderstorms Saturday Night Saturday Night... A chance of rain before 7pm, then a chance of showers between 7pm and 3am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a temperature rising to around 55 by 5am. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
80% chance of thunderstorms Sunday Sunday... Showers likely and possibly a thunderstorm before 9am, then showers likely between 9am and noon, then rain after noon. High near 54. Breezy, with a south wind 5 to 10 mph becoming northwest 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
40% chance of rain & snow Sunday Night Sunday Night... A chance of rain and snow before 9pm, then a chance of snow between 9pm and midnight. Mostly cloudy, with a low around 13. Windy. Chance of precipitation is 40%.
Partly Sunny on Monday Monday... Partly sunny, with a high near 21. Blustery.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 12.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 31.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 21.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 30.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 8.
Sunny on New Year's Day New Year's Day... Sunny, with a high near 18.
Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 4.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 22.
Current Radar Image


Sun Almanac for Dayton, Illinois
Sunrise: 07:27 AM
Sunset: 4:38 PM
Civil Sunrise:06:55 AM
Civil Sunset: 5:09 PM
Nautical Sunrise: 06:20 AM
Nautical Sunset: 5:44 PM
Astro Sunrise: 05:47 AM
Astro Sunset: 6:18 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.