When to Go

Petaluma' s temperate climate is as close to perfect as possible without boredom.

Summertime is dry, it almost never rains from late spring to late fall. Days are warm with temperatures ranging from 65 to 85 degrees, while nightly ocean breezes guarantee pleasant sleeping. The average humidity of 66% makes an air-conditioned home in Petaluma a rarity.

Wintertime has pleasant days and chilly evenings. Temperatures range from 35 to 60 degrees during December and January. An average annual rainfall of 25 inches assures green country sides.