Historical weather data, all-time temperature records, and monthly climate averages for Covina, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
Today's date has seen its share of weather history in Covina. This inland San Gabriel Valley city swings hard between seasons, so whatever's outside your window right now is part of a bigger pattern worth knowing.
Covina's all-time record high of 118° on July 6, 2018 tells you everything about how brutal the San Gabriel Valley can get when desert heat locks in. On the other end, a freeze to 29° on January 14, 2013 proves that even Southern California has a bite in winter.
Summers are genuinely hot here — average highs peak at 95° the last week of August through early September, and 90s stretch across July through September. Winters are mild but not warm, with December highs averaging just 69°. Rain is concentrated in winter, but even the wettest stretch of the year averages a modest amount, so drought-like conditions are the norm most of the year.