Historical weather data, all-time temperature records, and monthly climate averages for Mira Mesa, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Mira Mesa runs mild, with an average high of 70° and a low around 50°. But the date has seen some wild swings — a scorching 98° back in 1989, and a jaw-dropping 33° low in 1983. Rain is unlikely but not impossible, showing up about 16% of the time.
Mira Mesa's all-time extremes tell the story of a place that's mostly comfortable but occasionally ferocious — 111° in September 1963 is as brutal as Southern California gets, while 28° in January 1972 is a genuine freeze for a coastal community. The wettest single day on record, 3.7 inches on February 27, 2017, came from an atmospheric river that hammered the region.
Mira Mesa's famous mild climate is real — monthly average highs barely swing 16 degrees all year, from 67° in winter to a peak of 83° in late August and early September. If you're chasing warmth, aim for August through October; if you want to avoid rain, skip February, when precipitation peaks around 0.62 inches per week. There's truly no bad time to visit, just slightly better ones.