Dayton, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely then Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Dayton, IL in one place.
Showers and thunderstorms likely before 7am, then showers and thunderstorms. Mostly cloudy, with a high near 75. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Local Weather Overview
This forecast page for Dayton, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 13, 2026 1:12 PM CDT.
The active forecast window currently covers Apr 15 to Apr 19, 2026 for Dayton, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 15 to Apr 19, 2026
- Latest sync
- Apr 13, 2026 1:12 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Dayton
Friday looks like the warmest upcoming period in Dayton at 83 degrees F.
Saturday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Wednesday at about 10 to 15 mph SW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 13, 2026 1:12 PM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KDVN
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers. Mostly sunny, with a high near 77. Chance of precipitation is 40%.
A slight chance of rain showers before 7pm. Clear, with a low around 58.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 50%.
Showers and thunderstorms. Mostly cloudy, with a low around 51. Chance of precipitation is 80%.
Showers and thunderstorms likely. Partly sunny, with a high near 62. Chance of precipitation is 70%.
A chance of rain showers before 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 30%.
Mostly sunny, with a high near 57.
Mostly clear, with a low around 40.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely then Showers And Thunderstorms
|
75°F |
10 to 15 mph
SW
|
|
Wednesday Night
Apr 15
|
Showers And Thunderstorms
|
59°F |
10 to 15 mph
SW
|
|
Thursday
Apr 16
|
Chance Rain Showers
|
77°F |
10 to 15 mph
W
|
|
Thursday Night
Apr 16
|
Slight Chance Rain Showers then Clear
|
58°F |
5 to 10 mph
SW
|
|
Friday
Apr 17
|
Mostly Sunny then Chance Showers And Thunderstorms
|
83°F |
5 to 15 mph
S
|
|
Friday Night
Apr 17
|
Showers And Thunderstorms
|
51°F |
15 mph
SW
|
|
Saturday
Apr 18
|
Showers And Thunderstorms Likely
|
62°F |
15 mph
W
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
37°F |
10 to 15 mph
NW
|
|
Sunday
Apr 19
|
Mostly Sunny
|
57°F |
10 mph
NW
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
40°F |
5 to 10 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Dayton.