Gahanna, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gahanna, a city in Franklin County, Ohio.
Today
82°F
Partly Sunny then Chance Showers And Thunderstorms
A slight chance of rain showers between 4pm and 5pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 82. Southeast wind around 6 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Gahanna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Partly Sunny then Chance Showers And Thunderstorms | 6 mph SE | 35% |
| Tonight | 67°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 6 mph S | 64% |
| Sunday | 82°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 58% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 13 mph NE | 65% |
| Monday | 70°F | Chance Rain Showers | 13 mph NE | 47% |
| Monday Night | 55°F | Chance Rain Showers | 13 mph NE | 39% |
| Tuesday | 70°F | Chance Rain Showers | 13 mph NE | 35% |
| Tuesday Night | 57°F | Showers And Thunderstorms Likely | 14 mph NE | 64% |
| Wednesday | 69°F | Rain Showers Likely | 12 to 15 mph E | 64% |
| Wednesday Night | 55°F | Showers And Thunderstorms Likely | 10 to 14 mph E | 64% |
| Thursday | 70°F | Slight Chance Rain Showers | 10 mph NE | 22% |
| Thursday Night | 54°F | Mostly Cloudy | 9 mph NE | 11% |
| Friday | 71°F | Mostly Sunny | 7 to 12 mph NE | 14% |
| Friday Night | 52°F | Partly Cloudy | 7 to 12 mph NE | 14% |
Forecast source: National Weather Service (api.weather.gov) for Gahanna (40.037, -82.880). Updated through the day.
Growing snapshot for Gahanna
Last spring frost
Apr 18
First fall frost
Oct 27
Growing season
191 days
Hardiness zone
6b
More local growing data for Gahanna: nearby ZIP 43230 weather · frost dates · planting calendar · Ohio frost dates
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Climate data from the nearest NOAA station, Columbus Port Columbus Intl Ap, Oh (3.3 mi from Gahanna). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.