Historical weather data, all-time temperature records, and monthly climate averages for Alhambra, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Alhambra typically feels like a mild spring day, with average highs of 73° and lows of 49°. But the historical range tells a wilder story — this date has seen a scorching 101° back in 1989 and dipped to a near-freezing 33° in 1921. There's a 23% chance of rain today, though snow is essentially off the table.
Alhambra has seen some genuine extremes over its 130-plus years of records. The all-time high of 115° on September 6, 2020 is a punishing reminder of Southern California's heat potential, while the all-time low of 21° in January 1913 shows winters here aren't always a walk in the park. The wettest single day — 7.7 inches on March 2, 1938 — still stands as the benchmark for what a serious storm can deliver.
Alhambra runs warm and mostly dry, with highs climbing from the mid-60s in winter to a peak of around 90° in late July and early August. If you're avoiding heat, January through March keeps things comfortable in the mid-to-upper 60s. Rain, when it comes, concentrates in late February — but even the wettest week of the year averages just over an inch.