St. Marys

What is the climate like in St. Marys?

The best time to visit St. Marys is typically June – July, with trip comfort peaking in September (6.8/10). St. Marys is warmest in July, when daily highs average 80°F (27°C), and coolest in January, when lows fall to about 19°F (-7°C). The wettest month is typically August and the driest is September; the year sees roughly 43 in (1095 mm) of precipitation.

• Best time to visitJune – July — comfort peaks in September (6.8/10)
• Warmest monthJuly — average high 80°F (27°C)
• Coolest monthJanuary — average low 19°F (-7°C)
• Wettest monthAugust (4.2 in (108 mm))
• Driest monthSeptember (2.9 in (74 mm))
• Annual precipitation43 in (1095 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromWoodstock, 32 km away (1871-2024)