Historical weather data, all-time temperature records, and monthly climate averages for Bayside, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Bayside is a coin-flip for rain — historically there's a 45% chance of precipitation on this date. Temperatures tend to stay mild, with an average high of 56° and low of 44°, though the range has swung from a chilly 34° in 2012 to a relatively balmy 69° back in 1985.
Bayside's climate is defined by its remarkable consistency, but extremes do happen — the all-time high of 87° came during a September heat event in 2017, while a brutal December freeze in 1972 sent temps down to 21°. The wettest single day on record dumped 6.79 inches on December 27, 2002, and snow is rare enough that 2 inches in February 1989 still stands as the all-time mark.
Bayside runs one of the narrowest temperature ranges you'll find anywhere — monthly average highs span just 10 degrees, from 54° in early January to a modest peak of 64° in late August through early September. If you're chasing the warmest weather, late summer is your window; if you want to avoid rain, skip the last week of December, which averages 1.82 inches. Any time of year, pack layers.