Berkeley averages 5.1 days a year above 90°F, with December the wettest month at 5.32 in of normal rain. The hottest day on record was 107°F on Jun 15, 2000; the coldest, 24°F on Dec 22, 1990. The single biggest 24-hour rain event recorded was 6.98 in on Jan 4, 1982.
Climate and Average Weather Year Round in Berkeley
Year-round temperature
In Berkeley, the warmest months are June through September, with average daily highs between 74°F and 76°F. The coldest stretch runs December through February, with highs between 59°F and 62°F and overnight lows reaching 43°F.
Rainfall through the year
Rainfall in Berkeley averages 2.2 in per month over the long run. December is the wettest at 5.3 in, while July is the driest at 0.0 in.
Days at 90 °F or hotter
Berkeley averages 5.1 days per year at 90 °F or hotter. The hottest year on record saw 13 such days (2003); the coolest just 1 (1994).