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

61°F

16°C

Humidity 44%
Wind Speed S 10 mph
Barometer 29.80 in (1009.0 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 21 Mar 11:56 pm EDT
Extended Forecast for

Union OH

  • Overnight

    Overnight: Mostly clear, with a low around 57. Southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 83. Southwest wind 11 to 17 mph.

    High: 83 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 1am, then a slight chance of showers between 1am and 2am. Low around 35. North wind around 15 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Showers then
    Chance
    Showers

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 51. North wind 10 to 13 mph.

    High: 51 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31. North wind 5 to 7 mph becoming east after midnight.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 57. Southwest wind around 10 mph, with gusts as high as 20 mph.
Sunday
Increasing clouds, with a high near 83. Southwest wind 11 to 17 mph.
Sunday Night
Showers and possibly a thunderstorm before 1am, then a slight chance of showers between 1am and 2am. Low around 35. North wind around 15 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 51. North wind 10 to 13 mph.
Monday Night
Partly cloudy, with a low around 31. North wind 5 to 7 mph becoming east after midnight.
Tuesday
Mostly sunny, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Mostly cloudy, with a high near 62.
Wednesday Night
Mostly cloudy, with a low around 48.
Thursday
A chance of rain after 2pm. Partly sunny, with a high near 72. Chance of precipitation is 30%.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 38. Chance of precipitation is 50%.
Friday
A chance of rain. Partly sunny, with a high near 51. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 30.
Saturday
Mostly sunny, with a high near 52.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Union OH
 39.91°N 84.3°W (Elev. 899 ft)
Last Update:
6:35 pm EDT Mar 21, 2026
Forecast Valid:
12am EDT Mar 22, 2026-6pm EDT Mar 28, 2026
 
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