West Mifflin

What is the climate like in West Mifflin?

The best time to visit West Mifflin is typically August – September, with trip comfort peaking in August (6.5/10). West Mifflin is warmest in July, when daily highs average 84°F (29°C), and coolest in January, when lows fall to about 25°F (-4°C). The wettest month is typically May and the driest is November; the year sees roughly 54 in (1370 mm) of precipitation.

• Best time to visitAugust – September — comfort peaks in August (6.5/10)
• Warmest monthJuly — average high 84°F (29°C)
• Coolest monthJanuary — average low 25°F (-4°C)
• Wettest monthMay (6.3 in (159 mm))
• Driest monthNovember (3.2 in (80 mm))
• Annual precipitation54 in (1370 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromPittsburgh Allegheny Co AP, 5 km away (1935-2026)