Welded Anvil Weather Arrive prepared.

Climate almanac

Saint Helena

California, United States · 38.51°, -122.47°

+ Compare

What is the weather like in Saint Helena in May?

In May, Saint Helena is typically 78°F (26°C) during the day and 53°F (11°C) at night. The month brings about 0.8 in (20 mm) of precipitation in total.

  • Average high78°F (26°C)
  • Average low53°F (11°C)
  • Precipitation0.8 in (20 mm)
  • Clear or mostly clear days21
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)