Mount Vernon (OH) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Mount Vernon.
Climate overview of Mount Vernon
Temperatures in Mount Vernon, Ohio, United States of America, vary greatly throughout the year. July is the hottest month at 28°C (82°F), while January is the coldest at 1°C (34°F).
The city receives considerable rain/snowfall, with around 1050 mm (41 in) annually. June is the wettest month. It has warm summers and very cold winters. July is the sunniest month, averaging 8.7 hours of sunshine per day.
Mount Vernon Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Mount Vernon - and find the best time to visit.
Monthly Temperature in Mount Vernon
The climate in Mount Vernon is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a comfortable 28°C (82°F) in July to a very cold 1°C (34°F) in the coolest month, January.
Nights vary from 16°C (61°F) in July to around -9°C (16°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Mount Vernon
Mount Vernon has a notably wet climate with abundant precipitation, recording 1050 mm (41 in) of rain/snowfall per year. Mount Vernon offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between the wettest month June (127 mm (5 in)) and the driest month November (63 mm (2.5 in)) is not too significant. For more details, please visit our Mount Vernon 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 Mount Vernon
For those who appreciate different seasons, Mount Vernon serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 8.7 hours of sunshine daily, and embrace the darker days in December, offering only 2.8 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Mount Vernon by Month
The relative humidity is high throughout the year in Mount Vernon.
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 Mount Vernon
Each month is rated for comfortable sightseeing weather — mild temperatures and low rainfall. Tap a month for its full averages; your ideal time may differ for a beach or winter trip (see below).
- Best overall: May, July, August and September
- Warmest weather: June, July and August
- Most sunshine: June and July
- Fewest rainy days: August, September and November
- Climate seasons: warm summers and very cold winters
- Best for winter weather: January, with freezing nights around -9°C (16°F).
Frequently asked questions about the climate in Mount Vernon
What is the best time to visit Mount Vernon?
May, July, August and September typically offer the most optimal weather in Mount Vernon. In contrast, January, February, March and December tend to have less optimal conditions. Mount Vernon has warm summers and very cold winters.
What temperatures can I expect in Mount Vernon?
Daytime highs range from 1°C (34°F) in January to 28°C (82°F) in July. Nighttime lows range from -9°C (16°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Mount Vernon get?
Annual rainfall is around 1050 mm (41 in). June is the wettest month with 127 mm (5 in), while November is the driest with 63 mm (2.5 in).
How sunny is Mount Vernon?
Mount Vernon 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, Mount Vernon enjoys abundant sunshine.
Mount Vernon 3-Day Forecast
Mount Vernon (OH) 3-Day Forecast
Mount Vernon on the map
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