National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Dayton, Cox Dayton International Airport (KDAY)

Lat: 39.91°NLon: 84.22°WElev: 1007ft.

A Few Clouds

67°F

19°C

Humidity 76%
Wind Speed SW 8 mph
Barometer 29.93 in (1012.8 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 3 Sep 9:56 am EDT
Extended Forecast for

Union OH

  • Today

    Today: Sunny, with a high near 82. Southwest wind 9 to 13 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Low around 59. Southwest wind around 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Partly Cloudy
    then Showers

  • Thursday

    Thursday: Showers likely, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 71. Northwest wind 8 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 71 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51. West wind around 6 mph becoming light and variable.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 79. South wind 11 to 18 mph, with gusts as high as 28 mph.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers, mainly after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers before 8am. Mostly sunny, with a high near 71. Chance of precipitation is 30%.

    High: 71 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 82. Southwest wind 9 to 13 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Low around 59. Southwest wind around 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers likely, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 71. Northwest wind 8 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Mostly clear, with a low around 51. West wind around 6 mph becoming light and variable.
Friday
Mostly sunny, with a high near 79. South wind 11 to 18 mph, with gusts as high as 28 mph.
Friday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A chance of showers before 8am. Mostly sunny, with a high near 71. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Sunny, with a high near 72.
Sunday Night
Mostly clear, with a low around 45.
Monday
Sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Partly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
Union OH
 39.91°N 84.33°W (Elev. 906 ft)
Last Update:
4:00 am EDT Sep 3, 2025
Forecast Valid:
10am EDT Sep 3, 2025-6pm EDT Sep 9, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation