Welded Anvil Weather Arrive prepared.

Climate almanac

Saint Marys

Pennsylvania, United States · 41.43°, -78.56°

+ Compare

What is the weather like in Saint Marys in September?

In September, Saint Marys is typically 72°F (22°C) during the day and 54°F (12°C) at night. The month brings about 3.8 in (97 mm) of precipitation in total.

  • Average high72°F (22°C)
  • Average low54°F (12°C)
  • Precipitation3.8 in (97 mm)
  • Clear or mostly clear days10
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)