Historical weather data, all-time temperature records, and monthly climate averages for Glendale, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Glendale runs mild, with an average high of 73° and a low of 48° across 85 years of records. There's a small 16% chance of rain, though snow is essentially unheard of. That said, this date has swung wildly — from a scorching 99° in 1989 down to a frigid 37° in 1945.
Glendale's weather has some sharp edges behind that sunny SoCal reputation. The all-time high of 114° on September 5, 2020 stands as a brutal reminder of the region's heat potential, while the 22° low recorded in January 1979 shows winter can still bite. The wettest single day on record — 7.76 inches on January 22, 1943 — underscores how dramatically California's 'dry' winters can turn.
Glendale is warmest in late August through early September, when average highs peak around 90°, and coolest in late December at a comfortable 66°. If rain is a concern, February is the month to watch — the wettest stretch of the year runs in early February, averaging just over an inch per week. Spring and fall offer the most temperate conditions, with highs in the low-to-mid 70s and minimal precipitation.