Welded Anvil Weather Arrive prepared.

Climate almanac

Fallbrook

California, United States · 33.38°, -117.25°

+ Compare

What is the weather like in Fallbrook in September?

In September, Fallbrook is typically 85°F (30°C) during the day and 65°F (19°C) at night. The month brings about 0.4 in (10 mm) of precipitation in total.

  • Average high85°F (30°C)
  • Average low65°F (19°C)
  • Precipitation0.4 in (10 mm)
  • Clear or mostly clear days21
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)