Mount Vernon

What is the climate like in Mount Vernon?

The best time to visit Mount Vernon is typically August – October, with trip comfort peaking in September (7.2/10). Mount Vernon is warmest in July, when daily highs average 89°F (32°C), and coolest in January, when lows fall to about 28°F (-2°C). The wettest month is typically May and the driest is September; the year sees roughly 49 in (1254 mm) of precipitation.

• Best time to visitAugust – October — comfort peaks in September (7.2/10)
• Warmest monthJuly — average high 89°F (32°C)
• Coolest monthJanuary — average low 28°F (-2°C)
• Wettest monthMay (5.5 in (140 mm))
• Driest monthSeptember (3.1 in (78 mm))
• Annual precipitation49 in (1254 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromMt Vernon 3 Ne, 6 km away (1895-2026)