Chula Vista averages 4.5 days a year above 90°F, with February the wettest month at 2.33 in of normal rain. The hottest day on record was 108°F on Sep 4, 1988; the coldest, 28°F on Dec 25, 1987. The single biggest 24-hour rain event recorded was 2.42 in on Feb 15, 1986.
Climate and Average Weather Year Round in Chula Vista
Year-round temperature
In Chula Vista, the warmest months are July through October, with average daily highs between 75°F and 77°F. The coldest stretch runs February, March, December, with highs near 67°F and overnight lows reaching 46°F.
Rainfall through the year
Rainfall in Chula Vista averages 0.8 in per month over the long run. February is the wettest at 2.3 in, while August is the driest at 0.0 in.
Days at 90 °F or hotter
Chula Vista averages 4.5 days per year at 90 °F or hotter. The hottest year on record saw 14 such days (2014); the coolest just 1 (2002).
Precipitation this year
As of May 29, Chula Vista has received 3.5 in of precipitation this year — 46% below the long-term normal for this point in the year (6.5 in).