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.

Mostly Cloudy

78°F

26°C

Humidity 45%
Wind Speed NE 7 mph
Barometer 30.15 in (1020.2 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 4 Aug 1:56 pm EDT
Extended Forecast for

Union OHSimilar City Names

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 82. Northeast wind around 7 mph.

    High: 82 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Northeast wind 3 to 6 mph.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84. East wind 3 to 7 mph.

    High: 84 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 8pm. Some of the storms could produce heavy rainfall. Partly cloudy, with a low around 64. East wind 3 to 6 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Heavy Rain
    then Partly
    Cloudy

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 84. East wind 3 to 7 mph. Chance of precipitation is 20%.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 82. Northeast wind around 7 mph.
Tonight
Partly cloudy, with a low around 63. Northeast wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 84. East wind 3 to 7 mph.
Tuesday Night
A chance of showers and thunderstorms before 8pm. Some of the storms could produce heavy rainfall. Partly cloudy, with a low around 64. East wind 3 to 6 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 84. East wind 3 to 7 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 65.
Thursday
Sunny, with a high near 86.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 67.
Saturday
Mostly sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 69.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Union OHSimilar City Names
 39.91°N 84.3°W (Elev. 899 ft)
Last Update:
12:27 pm EDT Aug 4, 2025
Forecast Valid:
2pm EDT Aug 4, 2025-6pm EDT Aug 10, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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