Ohio · NWS ILN office

Gahanna, OH weather

It is 52°F and clear at John Glenn Columbus International Airport as of Oct 28, 5:05 AM EDT. Overnight: Mostly Cloudy, low near 50°F. Forecast from the National Weather Service, issued Oct 28, 4:00 AM EDT.

Updated Oct 28, 5:24 AM EDT (snapshot)

Current conditions

Temperature

52°F

Clear

Wind

Calm

Humidity 87% · dew point 48°F

Pressure · visibility

30.27 inHg

Visibility 10 mi

Observed at John Glenn Columbus International Airport (KCMH), Oct 28, 5:05 AM EDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Gahanna forecast zone right now.

Around the NWS ILN forecast area

No active alerts in zones served by the ILN office near Gahanna.

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. No alerts are active anywhere in Ohio.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Gahanna (local time)
TimeTempForecastPrecip. chanceWind
Wed 7 AM50°FPartly Sunny0%SE 2 mph
Wed 8 AM50°FPartly Sunny0%SE 2 mph
Wed 9 AM52°FMostly Sunny0%SE 2 mph
Wed 10 AM57°FMostly Sunny0%S 2 mph
Wed 11 AM62°FSunny0%S 3 mph
Wed 12 PM66°FSunny1%S 3 mph
Wed 1 PM69°FSunny1%S 3 mph
Wed 2 PM72°FSunny1%S 5 mph
Wed 3 PM73°FSunny1%S 5 mph
Wed 4 PM73°FSunny0%S 5 mph
Wed 5 PM74°FSunny0%S 5 mph
Wed 6 PM71°FClear0%S 3 mph
Wed 7 PM67°FClear0%SE 3 mph
Wed 8 PM64°FMostly Clear0%SE 3 mph
Wed 9 PM59°FMostly Clear0%SE 3 mph
Wed 10 PM57°FMostly Clear0%SE 3 mph
Wed 11 PM56°FMostly Clear0%S 3 mph
Thu 12 AM55°FMostly Clear0%S 3 mph
Thu 1 AM54°FClear0%S 2 mph
Thu 2 AM53°FClear0%S 2 mph
Thu 3 AM52°FClear0%S 2 mph
Thu 4 AM51°FClear0%S 2 mph
Thu 5 AM50°FMostly Clear0%S 2 mph
Thu 6 AM49°FSunny0%S 2 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Gahanna can differ.

7-day forecast

Overnight

Low 50°F

Mostly cloudy, with a low around 50. East wind around 2 mph.

Wednesday

High 75°F·Low 50°F

Mostly sunny, with a high near 75. South wind around 5 mph.

Wednesday Night: Clear, with a low around 50. South wind around 3 mph.

Thursday

High 76°F·Low 52°F

Sunny, with a high near 76. South wind 2 to 12 mph.

Thursday Night: Mostly clear, with a low around 52. West wind 3 to 9 mph.

Friday

High 71°F·Low 46°F

Sunny, with a high near 71.

Friday Night: Partly cloudy, with a low around 46.

Saturday

High 69°F·Low 52°F

Mostly cloudy, with a high near 69.

Saturday Night: Mostly cloudy, with a low around 52.

Sunday

High 70°F·Low 53°F

A chance of rain after 7am. Mostly cloudy, with a high near 70. Chance of precipitation is 30%.

Sunday Night: A chance of rain. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.

Monday

High 70°F·Low 55°F

A chance of rain. Mostly cloudy, with a high near 70. Chance of precipitation is 40%.

Monday Night: A chance of rain. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.

Tuesday

High 70°F

Rain likely. Mostly cloudy, with a high near 70.

Nearby cities

Larger cities in the area

Other cities in Franklin County

See every city we cover in Ohio, or check all active alerts.

About this forecast

Forecast office
Gahanna is served by the National Weather Service ILN forecast office, forecast zone OHZ055, county zone OHC049.
Location used
The Census Bureau's internal point for Gahanna (40.0367, -82.8799), in Franklin County. Population: 35,544 (2024 estimate), number 40 of the 86 Ohio cities on this site.
Radar
Nearest NWS radar: KILN. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/40.0367,-82.8799 (forecast issued Oct 28, 4:00 AM EDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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