Historical weather data, all-time temperature records, and monthly climate averages for Bonita, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Bonita is a mild, mostly dry affair — 106 years of data put the average high at 66° and the low at 51°, with only a 17% chance of rain. That said, the date has its wild side: it once hit 99° back in 1989, and dipped to 37° in 1945.
Bonita's all-time records tell the story of a place that can surprise you. The mercury has soared as high as 108° (September 27, 1963) and plunged to 24° (January 14, 1963) — remarkably, both extremes happened in the same year. The wettest single day on record dropped 3.67 inches on Christmas Eve, 1940.
Bonita runs remarkably consistent year-round, with monthly average highs barely budging from 64° in early January to a peak of 76° in early September — a range most cities would envy. If you're chasing warmth, late summer is your window; if you want to avoid rain, come between May and October, when the wettest stretch (late January through early February, averaging 0.55" per week) is well behind you.