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.

Fog/Mist

44°F

7°C

Humidity 93%
Wind Speed S 7 mph
Barometer 30.11 in (1020.0 mb)
Dewpoint 42°F (6°C)
Visibility 1.00 mi
Wind Chill40°F (4°C)
Last update 20 Nov 12:56 pm EST
Extended Forecast for

Union OH

  • This Afternoon

    This Afternoon: Cloudy, with a high near 48. South wind around 6 mph.

    High: 48 °F

    Cloudy

  • Tonight

    Tonight: A chance of rain after 3am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 44. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 44 °F

    Patchy Fog
    then Chance
    Rain and
    Patchy Fog

  • Friday

    Friday: Rain likely, mainly after 3pm. Areas of fog before 10am. Otherwise, cloudy, with a high near 54. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Chance Rain
    and Areas Fog
    then Rain
    Likely

  • Friday Night

    Friday Night: Rain, mainly before 1am. Low around 40. North wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 50. North wind 6 to 9 mph.

    High: 50 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Cloudy, with a high near 48. South wind around 6 mph.
Tonight
A chance of rain after 3am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 44. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Friday
Rain likely, mainly after 3pm. Areas of fog before 10am. Otherwise, cloudy, with a high near 54. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain, mainly before 1am. Low around 40. North wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Mostly sunny, with a high near 50. North wind 6 to 9 mph.
Saturday Night
Mostly clear, with a low around 32.
Sunday
Sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 35.
Monday
Partly sunny, with a high near 56.
Monday Night
Rain, mainly after 1am. Low around 45. Chance of precipitation is 80%.
Tuesday
Rain. High near 60. Chance of precipitation is 80%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 41. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Union OH
 39.89°N 84.33°W (Elev. 965 ft)
Last Update:
12:56 pm EST Nov 20, 2025
Forecast Valid:
1pm EST Nov 20, 2025-6pm EST Nov 26, 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