Gahanna, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gahanna, a city in Franklin County, Ohio.
Overnight
61°F
Chance Light Rain
A chance of rain. Mostly cloudy, with a low around 61. South wind around 13 mph, with gusts as high as 23 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Gahanna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Chance Light Rain | 13 mph S | 35% |
| Wednesday | 66°F | Rain | 13 to 17 mph S | 99% |
| Wednesday Night | 53°F | Light Rain Likely then Mostly Cloudy | 6 to 16 mph SW | 71% |
| Thursday | 64°F | Mostly Sunny | 6 to 13 mph SW | 0% |
| Thursday Night | 46°F | Partly Cloudy | 2 to 7 mph SW | 0% |
| Friday | 58°F | Chance Light Rain | 2 to 9 mph W | 46% |
| Friday Night | 39°F | Chance Light Rain then Mostly Cloudy | 9 mph NW | 46% |
| Saturday | 53°F | Slight Chance Light Rain | 10 mph NW | 15% |
| Saturday Night | 35°F | Partly Cloudy | 3 to 7 mph NW | 8% |
| Sunday | 56°F | Mostly Sunny | 3 to 12 mph W | 4% |
| Sunday Night | 35°F | Mostly Clear | 5 to 9 mph W | 4% |
| Monday | 58°F | Sunny | 5 to 9 mph W | 4% |
| Monday Night | 37°F | Mostly Clear | 7 mph SW | 2% |
| Tuesday | 63°F | Sunny | 6 to 10 mph W | 1% |
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
Nearby towns & communities
Bexley
Blacklick Estates
Brice
Columbus
Darbydale
Dublin
Grandview Heights
Grove City
Groveport
Harrisburg
Hilliard
Huber Ridge
Lake Darby
Lincoln Village
Marble Cliff
Minerva Park
New Albany
Obetz
Orient
Reynoldsburg
Riverlea
Shawnee Hills
Upper Arlington
Urbancrest
Valleyview
Westerville
Whitehall
Worthington
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 Nov 4, 2026.