Gahanna (OH) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Gahanna.
Climate overview of Gahanna
Temperatures in Gahanna, Ohio, United States of America, vary greatly throughout the year. July is the hottest month at 29°C (84°F), while January is the coldest at 2°C (36°F).
Rain/snowfall is high, totalling around 1130 mm (44 in) per year. June is the wettest month and November the driest. The city also experiences warm summers and cold winters. Sunshine peaks in July, when the city sees around 8.7 hours of sunshine per day.
Gahanna Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Gahanna - and find the best time to visit.
Monthly Temperature in Gahanna
The climate in Gahanna is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a comfortable 29°C (84°F) in July, the warmest time of the year, to a chilly 2°C (36°F) during cooler months like January.
At night, you can expect temperatures ranging from 19°C (66°F) in July to around -6°C (21°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Gahanna
Gahanna has a notably wet climate with abundant precipitation, recording 1130 mm (44 in) of rain/snowfall per year. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, June it receives high rainfall, averaging 139 mm (5.5 in) of precipitation, recorded across 13 rainy days. In contrast, the driest month November brings less rainfall, with 62 mm (2.4 in) over 9 rainy days. For more details, please visit our Gahanna Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Gahanna
Seasonal changes in sunshine hours are quite dramatic in Gahanna. While July receives considerable daily sunshine with up to 8.7 hours, December marks the darkest time of the year, where sunshine is scarce with only 2.8 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Gahanna by Month
The relative humidity is high throughout the year in Gahanna.
The city experiences its highest humidity in December, reaching 74%. In April, the humidity drops to its lowest level at 62%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Gahanna
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, August and September
- Warmest weather: June, July and August
- Most sunshine: June and July
- Fewest rainy days: August, September and November
- Seasonal pattern: Warm summers and cold winters
- Coldest conditions: January, with freezing nights around -6°C (21°F).
Frequently asked questions about the climate in Gahanna
What is the best time to visit Gahanna?
May, August and September typically offer the most optimal weather in Gahanna. In contrast, January, February, March and December tend to have less optimal conditions. Gahanna has warm summers and cold winters.
What temperatures can I expect in Gahanna?
Daytime highs range from 2°C (36°F) in January to 29°C (84°F) in July. Nighttime lows range from -6°C (21°F) to 19°C (66°F). Temperatures vary considerably through the year.
How much rain does Gahanna get?
Annual rainfall is around 1130 mm (44 in). June is the wettest month with 139 mm (5.5 in), while November is the driest with 62 mm (2.4 in).
How sunny is Gahanna?
Gahanna receives around 2,178 hours of sunshine per year. July is the sunniest month with 260 hours, while December is the cloudiest with just 84 hours. Overall, Gahanna enjoys abundant sunshine.
Gahanna 3-Day Forecast
Gahanna (OH) 3-Day Forecast
Gahanna on the map
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