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

Hazardous Weather Conditions

Current conditions at

John Glenn Columbus International Airport (KCMH)

Lat: 39.99°NLon: 82.88°WElev: 807ft.

Overcast

87°F

31°C

Humidity 50%
Wind Speed W 13 mph
Barometer 30.07 in (1017.6 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 31 Aug 3:51 pm EDT
Extended Forecast for

Gahanna OH

Heat Advisory September 1, 02:00pm until September 2, 11:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Partly cloudy, with a low around 73. West wind 5 to 8 mph becoming light and variable in the evening.

    Low: 73 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 94. Heat index values as high as 102. West wind 5 to 9 mph.

    High: 94 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 73. Southwest wind around 5 mph becoming calm in the evening.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 96. Heat index values as high as 104. Calm wind becoming southwest 5 to 9 mph in the morning.

    High: 96 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. Southwest wind 3 to 5 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 95. Chance of precipitation is 20%.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms after 8am. Partly sunny, with a high near 89. Chance of precipitation is 30%.

    High: 89 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 67. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 73. West wind 5 to 8 mph becoming light and variable in the evening.
Tuesday
Mostly sunny, with a high near 94. Heat index values as high as 102. West wind 5 to 9 mph.
Tuesday Night
Mostly clear, with a low around 73. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 96. Heat index values as high as 104. Calm wind becoming southwest 5 to 9 mph in the morning.
Wednesday Night
Mostly clear, with a low around 75. Southwest wind 3 to 5 mph.
Thursday
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 95. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 72.
Friday
A chance of showers and thunderstorms after 8am. Partly sunny, with a high near 89. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 62.
Labor Day
Mostly sunny, with a high near 83.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Gahanna OH
 40.01°N 82.88°W (Elev. 797 ft)
Last Update:
4:00 pm EDT Aug 31, 2026
Forecast Valid:
4pm EDT Aug 31, 2026-6pm EDT Sep 7, 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