Rainfall is 25 inches annually, mostly between November and March. Obispo San Luis Obispo boasts mild temperatures year round, so it's easy to enjoy almost any type of outdoor recreation on Pacific beaches, along coastal dunes and ridges, and at nearby lakes.
Warm temperatures are the norm.
Generally the autumn temperatures are around 70 degrees with rain in the latter part of the year and early months. This is a wonderful climate for being outdoors. The fall days are shorter with temperatures in the mid-60's, cooler in the morning and evenings dipping into the 40's with chilly winds developing in October. Winter begins in December and with it what we call our rainy season accompanied by cooler temperatures. Occasional frost and temperatures dipping at times into the mid-30's is not unusual.