Historical weather data, all-time temperature records, and monthly climate averages for Poway, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Poway tends to be a mild, pleasant day — historically averaging a high of 70° and a low of 50°. That said, the date has seen some wild swings: it hit 98° back in 1989 and dipped to a near-freezing 33° in 1983. Rain is unlikely, with just a 16% historical chance of any precipitation.
Poway's all-time records tell the story of a place that rarely gets truly extreme — but absolutely can. The thermometer has touched 111° (September 1963) and plunged to 28° (January 1972), and a single February day in 2017 dumped 3.7 inches of rain. For Southern California inland foothills, that's about as dramatic as it gets.
Poway is remarkably consistent year-round, with monthly average highs ranging only from 67° in winter to 82° at the late-summer peak (late August through early September). If you're chasing warmth, aim for August or September; if you want to avoid rain, skip February, which is the wettest stretch of the year. Honestly, though, any month here is pretty livable.