As Luther Burbank discovered, the Sebastopol area climate is ideal. Rainfall averages 36 inches per year, with rainy months concentrated in November through March. Normal prevailing winds are southwesterly at 10 m.p.h.
Sebastopol Area
CLIMATIC AVERAGES   Jan    Feb    Mar    Apr    May    June    Jul    Aug    Sept    Oct    Nov    Dec 
Daily Maximum 58 64 67 71 76 82 85 85 85 79 67 59
Daily Minimum 37 40 40 42 46 50 52 52 51 46 41 38
Monthly Precipitation 7.2 4.7 3.4 2.3 0.5 0.3 0.1 0.2 0.4 1.9 3.7 5.5
Days w/> .01 Precipitation 11 10 10 6 3 1 1 1 1 3 7 10
Days w/Snow, Ice Pellets > .01 0 0 0 0 0 0 0 0 0 0 0 0
Days with Thunderstorms 0 1 0 0 0 0 0 0 1 0 0 0
Days with Fog 1/4 mile or less 10 5 2 1 0 0 0 0 0 1 6 10
Clear Days 6 8 10 12 18 22 27 26 23 19 10 8
Partially Cloudy Days 6 7 8 10 8 6 3 4 4 6 7 6
Cloudy Days 19 13 12 8 5 2 1 1 2 6 13 17