Historical weather data, all-time temperature records, and monthly climate averages for Wilmington, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Wilmington runs mild, with highs averaging 69° and lows around 49° across 94 years of records. There's only a 14% chance of rain today, though the date has seen some wild swings — from a scorching 98° in 1989 down to a 36° freeze in 1956.
Wilmington's all-time extremes tell the story of a coastal LA community that rarely goes to the edge but occasionally does. The mercury has hit 108° (September 1963) and cratered to 24° (January 1937), and a single January day in 1956 dumped 6.53 inches of rain — still the wettest on record.
Wilmington is a year-round mild story with surprisingly little variation — monthly highs span just 13 degrees, from 66° in January to 79° in late summer. Peak warmth runs late July through August, while the coolest and wettest stretch clusters around the last week of December, averaging 0.85 inches of rain and highs of 65°.