Guerneville, CA is known for its moderate climate, with warm summers and mild winters. Average temperatures range from the mid-50s in winter to the mid-80s in summer. Summers bring plenty of sunshine and temperatures rarely exceed 90 degrees. Winter brings some rain and occasional snowfalls, however the area rarely experiences extreme weather conditions. The relative humidity is low throughout the year making for pleasant days and comfortable nights. In general, Guerneville offers a pleasant climate year round making it an ideal place to visit or call home!
Guerneville, California gets 41 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Guerneville averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 261 sunny days per year in Guerneville. The US average is 205 sunny days.
Guerneville gets some kind of precipitation, on average, 75 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 85 degrees
Winter Low: the January low is 37
Rain: averages 41 inches of rain a year
Snow: averages 0 inches of snow a year