Marietta

What is the climate like in Marietta?

The best time to visit Marietta is typically August – September, with trip comfort peaking in September (6.8/10). Marietta is warmest in July, when daily highs average 85°F (30°C), and coolest in January, when lows fall to about 27°F (-3°C). The wettest month is typically May and the driest is November; the year sees roughly 52 in (1323 mm) of precipitation.

• Best time to visitAugust – September — comfort peaks in September (6.8/10)
• Warmest monthJuly — average high 85°F (30°C)
• Coolest monthJanuary — average low 27°F (-3°C)
• Wettest monthMay (5.8 in (146 mm))
• Driest monthNovember (3.1 in (80 mm))
• Annual precipitation52 in (1323 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromParkersburg AP, 8 km away (1948-2026)