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.

Fair

42°F

6°C

Humidity 65%
Wind Speed Calm
Barometer 30.50 in (1033.4 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 18 Oct 12:56 am EDT
Extended Forecast for

Union OH

Freeze Warning until October 18, 09:00am
Click here for hazard details and duration
Freeze Warning
  •  
    Freeze Warning until October 18, 09:00am

    NOW until 9:00am Sun

    Freeze Warning

  • Overnight

    Low: 31 °F

    Frost

  • Sunday

    Sunday: Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 63. South wind 3 to 7 mph.

    High: 63 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 37. Southeast wind around 5 mph becoming calm in the evening.

    Low: 37 °F

    Clear

  • Monday

    Monday: Areas of frost before 9am. Otherwise, sunny, with a high near 67. Calm wind.

    High: 67 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Clear, with a low around 37. Calm wind.

    Low: 37 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Tuesday Night

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

    Low: 40 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

Overnight
Widespread frost, mainly after 3am. Otherwise, clear, with a low around 31. Calm wind.
Sunday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 63. South wind 3 to 7 mph.
Sunday Night
Clear, with a low around 37. Southeast wind around 5 mph becoming calm in the evening.
Monday
Areas of frost before 9am. Otherwise, sunny, with a high near 67. Calm wind.
Monday Night
Clear, with a low around 37. Calm wind.
Tuesday
Sunny, with a high near 69.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Sunny, with a high near 70.
Wednesday Night
Clear, with a low around 41.
Thursday
Sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 43.
Friday
Sunny, with a high near 69.
Friday Night
Mostly clear, with a low around 42.
Saturday
Sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Union OH
 39.91°N 84.3°W (Elev. 899 ft)
Last Update:
12:29 am EDT Oct 18, 2026
Forecast Valid:
1am EDT Oct 18, 2026-6pm EDT Oct 24, 2026
 
Forecast Discussion
 
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Additional Resources

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