Current conditions at

Dayton, Cox Dayton International Airport (KDAY)

Lat: 39.91°NLon: 84.22°WElev: 1007ft.

Mostly Cloudy

74°F

23°C

Humidity 85%
Wind Speed SW 17 mph
Barometer 29.96 in (1014.0 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 19 Aug 4:56 pm EDT
Extended Forecast for

Union OH

Flood Watch until August 20, 10:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until August 20, 10:00am

    NOW until 10:00am Thu

    Flood Watch

  • This Afternoon

    High: 78 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms before 4am, then a chance of showers between 4am and 5am, then a chance of showers and thunderstorms after 5am.  Low around 64. Light and variable wind.  Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 64 °F

    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly before 7am.  Cloudy, then gradually becoming mostly sunny, with a high near 80. Calm wind becoming north around 6 mph in the afternoon.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 61. Northeast wind around 6 mph becoming calm  after midnight.

    Low: 61 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 81. Light east wind.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 80. Chance of precipitation is 40%.

    High: 80 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 59. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Southwest wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before 4am, then a chance of showers between 4am and 5am, then a chance of showers and thunderstorms after 5am. Low around 64. Light and variable wind. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Thursday
A chance of showers and thunderstorms, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 80. Calm wind becoming north around 6 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Partly cloudy, with a low around 61. Northeast wind around 6 mph becoming calm after midnight.
Friday
Mostly sunny, with a high near 81. Light east wind.
Friday Night
Mostly clear, with a low around 61.
Saturday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 61.
Wednesday
Mostly sunny, with a high near 82.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Union OH
 39.93°N 84.3°W (Elev. 899 ft)
4:00 pm EDT Aug 19, 2026
5pm EDT Aug 19, 2026-6pm EDT Aug 26, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database