San Rafael, CA Weather & Climate Normals
San Rafael's real weather, in one number
San Rafael, CA scores 79/100 on this site's reading of NOAA's own 30-year normals: mild with real seasons. A solid stretch of comfortable months alongside a noticeable but not extreme summer or winter. 9 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
San Rafael's hottest and coldest months
San Rafael's hottest month is Aug, averaging 68°F; its coldest is Dec, averaging 50°F, a 18.8°F swing across the year, one of the smaller gaps in this dataset.
Rain and snow in San Rafael
San Rafael averages 34.45in of precipitation a year across roughly 69 days with measurable rain or snow, and 0in of snow a year.
Where San Rafael ranks
San Rafael ranks 135 of 4876 US cities in this dataset for comfort score, and 135 of 429 within CA. About 59,961 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from SAN RAFAEL CIVIC CTR, CA US, 2.0 miles from San Rafael, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station