Climate almanac
Mount Vernon
Ohio, United States · 40.39°, -82.49°
What is the climate like in Mount Vernon?
The best time to visit Mount Vernon is typically August – September, with trip comfort peaking in September (7.1/10). Mount Vernon is warmest in July, when daily highs average 83°F (28°C), and coolest in January, when lows fall to about 24°F (-5°C). The wettest month is typically April and the driest is September; the year sees roughly 47 in (1188 mm) of precipitation.
- Best time to visitAugust – September — comfort peaks in September (7.1/10)
- Warmest monthJuly — average high 83°F (28°C)
- Coolest monthJanuary — average low 24°F (-5°C)
- Wettest monthApril (4.8 in (122 mm))
- Driest monthSeptember (3.0 in (76 mm))
- Annual precipitation47 in (1188 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromCenterburg 2 Se, 18 km away (1950-2026)