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

Hazardous Weather Conditions

Current conditions at

Dayton, Cox Dayton International Airport (KDAY)

Lat: 39.91°NLon: 84.22°WElev: 1007ft.

Partly Cloudy

64°F

18°C

Humidity 87%
Wind Speed SE 3 mph
Barometer 30.17 in (1021.0 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 8 Sep 5:56 am EDT
Extended Forecast for

Union OHSimilar City Names

  • Today

    Today: Mostly sunny, with a high near 88. Southeast wind 5 to 7 mph becoming southwest in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 70. South wind 3 to 8 mph.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers after 3pm. Increasing clouds, with a high near 91. Southwest wind 10 to 16 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 91 °F

    Sunny then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 69. Southwest wind 6 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 8am, then showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. High near 79. Northwest wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 79 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 58. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 88. Southeast wind 5 to 7 mph becoming southwest in the afternoon.
Tonight
Partly cloudy, with a low around 70. South wind 3 to 8 mph.
Wednesday
A chance of showers after 3pm. Increasing clouds, with a high near 91. Southwest wind 10 to 16 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 69. Southwest wind 6 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers and possibly a thunderstorm before 8am, then showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. High near 79. Northwest wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 58. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 65.
Sunday
A chance of showers. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Union OHSimilar City Names
 39.91°N 84.3°W (Elev. 899 ft)
Last Update:
4:00 am EDT Sep 8, 2026
Forecast Valid:
6am EDT Sep 8, 2026-6pm EDT Sep 14, 2026
 
Forecast Discussion
 
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Additional Resources

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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