Historical weather data, all-time temperature records, and monthly climate averages for Artesia, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Artesia typically feels like a mild spring day, with highs averaging 71° and almost no chance of rain at just 13%. That said, this date has some wild range in its history — from a sweltering 105° back in 1989 to a chilly 41° low in 1955.
Artesia sits in the heart of the LA Basin, where the weather is generally benign — but the extremes tell a different story. The all-time high of 111° hit on September 27, 2010 during a brutal late-summer heat event, while the record low of 25° on January 13, 1963 shows even Southern California can get a hard freeze. The wettest single day on record dropped 5.02 inches on January 26, 1956.
Artesia enjoys classic Southern California weather, with highs staying in the mid-to-upper 60s all winter and peaking around 85° during the first week of September. The temperature swing across the entire year is remarkably narrow — just 19 degrees separates the coolest and warmest average weeks. If you're watching for rain, aim for mid-February, when weekly precipitation averages 0.78 inches; summers are essentially bone dry.