Historical weather data, all-time temperature records, and monthly climate averages for Chula Vista, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Chula Vista is a mild, mostly dry affair — expect a high around 66° and a low near 51°, with only a 17% chance of rain. But the date has seen its wild side: 1989 brought a scorching 99° high, while 1945 dipped to a frigid 37° low.
Chula Vista's weather is famously tame, but the extremes tell a different story. The mercury has swung from a brutal 108° on September 27, 1963, all the way down to 24° on January 14 of that same year — remarkably, both records belong to 1963. The wettest single day on record was Christmas Eve 1940, which dumped 3.67 inches of rain.
Chula Vista's climate is one of the most consistent in the country, with monthly average highs ranging only from 64° in early January to 76° in early September. If you're chasing warmth, aim for late summer; if you want to dodge rain, avoid late January through early February, the wettest stretch of the year.