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Dayton, Illinois Weather Forecast
Dayton, Illinois Weather
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Weather Forecast for Dayton, Illinois : Henry County
Issued: 8:56 am CST Jan 7, 2026 Latitude: 41.4892011 Longitude: -90.3215147 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Thursday Friday Saturday Sunday Monday Tuesday
Morning Fog on Today Increasing Clouds on Tonight 100% chance of rain on Thursday Mostly Cloudy on Friday 60% chance of rain & snow on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday Partly Sunny on Tuesday
High: 50°F Low: 40°F High: 57°F High: 46°F High: 38°F High: 29°F High: 40°F High: 42°F
Low: 40°F Low: 33°F Low: 20°F Low: 20°F Low: 28°F  
Morning Fog Increasing Clouds Rain Mostly Cloudy Rain & Snow Mostly Sunny Mostly Sunny Partly Sunny
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Current Conditions at
MOLINE - (KMLI)
30°
Clear
Freezing Fog
as of 8:38 AM CST
Rel. Humidity: 100%
Dew Point: 30°F
Visibility: 1/4 Miles
Pressure: 29.91 in.
Flight Rule: IFR
Wind Data
3 MPH
170° South
Morning Fog on Today Today... Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 50. South wind 5 to 10 mph, with gusts as high as 20 mph.

Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 40. South wind around 10 mph, with gusts as high as 20 mph.

100% chance of rain Thursday Thursday... Rain, mainly after noon. High near 57. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

80% chance of rain Thursday Night Thursday Night... Rain, mainly before midnight. Low around 40. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.

Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 46.

50% chance of rain & snow Friday Night Friday Night... A chance of rain after midnight, mixing with snow after 3am. Mostly cloudy, with a low around 33. Chance of precipitation is 50%. Little or no snow accumulation expected.

60% chance of rain & snow Saturday Saturday... A chance of rain and snow before noon, then snow likely. Partly sunny, with a high near 38. Chance of precipitation is 60%.

40% chance of snow Saturday Night Saturday Night... A 40 percent chance of snow before midnight. Mostly cloudy, with a low around 20.

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

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 20.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 40.

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

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 42.

Sun Almanac for Dayton, Illinois
Sunrise: 07:28 AM
Sunset: 4:48 PM
Civil Sunrise:06:57 AM
Civil Sunset: 5:19 PM
Nautical Sunrise: 06:22 AM
Nautical Sunset: 5:53 PM
Astro Sunrise: 05:49 AM
Astro Sunset: 6:27 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.