Climate almanac

Monessen

Pennsylvania, United States · 40.15°, -79.89°

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What is the climate like in Monessen?

The best time to visit Monessen is typically September, the year's most comfortable month (6.5/10). Monessen 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 (1378 mm) of precipitation.

  • Best time to visitSeptember — the year's comfort peak (6.5/10)
  • Warmest monthJuly — average high 84°F (29°C)
  • Coolest monthJanuary — average low 25°F (-4°C)
  • Wettest monthMay (6.1 in (155 mm))
  • Driest monthNovember (3.1 in (78 mm))
  • Annual precipitation54 in (1378 mm)
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
  • Records fromDonora 1 Sw, 2 km away (1926-2026)