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St. Helena
Average rainfall
ClimateForecastNovemberDecember >>

St. Helena (CA) Precipitation: Average Monthly Rainfall and Snowfall

This graph shows the average amount of rainfall per month in St. Helena (California). The numbers are calculated over a 30-year period to provide a reliable average.

  • A lot of rain (rainy season) falls in the months: January, February, March and December.
  • St. Helena has dry periods in May, June, July, August and September.
  • On average, December is the wettest month with 175 mm of precipitation.
  • On average, August is the driest month with 0 mm of precipitation.
  • The average amount of annual precipitation is 800 mm.

Current rainfall in St. Helena (CA)

Fri   Nov 15
16°C | 3°C
NW 11 km/h
clear and no rain

clear and no rain

hourly forecast
Sat   Nov 16
15°C | 0°C
N 4 km/h
partly cloudy and no rain

partly cloudy and no rain

hourly forecast
Sun   Nov 17
16°C | 2°C
W 14 km/h
0.5 mm
broken clouds and chance of slight rain

broken clouds and chance of slight rain

hourly forecast
5-Day Forecast 10-Day Forecast

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