Humboldt Redwoods State Park is located in northern California in a temperate coastal climate. The park receives an average of 65" - 80" of rain per year with the majority of rainfall November through May. Winter and spring are cool and moist, with temperatures often in the 50s for highs and 30s for lows. Summer is warm and dry with morning fog that usually burns off by noon. Temperatures are in the upper 70s to low 80s for the highs and the upper 50s to low 60s for lows. Fall is typically dry with morning fog and occassional rain showers. Highs in the fall are usually in the upper 60s to lower 70s and lows in the upper 40s.
Layered clothing is recommended as temperatures can sometimes change rapidly. For current conditions, go to the National Weather Service.