Historical weather data, all-time temperature records, and monthly climate averages for Azusa, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
Today's date has a story in Azusa's weather record stretching back to 1993. This foothill city swings hard between seasons, so whatever today brings, it fits into a climate defined by extremes.
Azusa has hit a scorching 118° — recorded on July 6, 2018 — and dipped as low as 29° on January 14, 2013, a nearly 90-degree spread between its all-time marks. That range reflects life at the base of the San Gabriel Mountains, where heat events get trapped and rare winter cold snaps can surprise.
Azusa peaks in late summer, with the warmest week of the year averaging a 97° high between August 27 and September 2 — hotter than July. Winter is mild by most standards, with December highs hovering around 69°, and if rain is coming, January is your best bet.