Historical weather data, all-time temperature records, and monthly climate averages for Imperial Beach, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Imperial Beach is historically mild and dry — expect a high around 67° and a low near 52°, with only a 10% chance of rain. The date's range tells a bigger story: it's touched 80° as recently as 2009, and dipped to a brisk 40° back in 1945.
Imperial Beach's all-time records reveal a place that rarely gets pushed to extremes — but it can happen. The hottest day on record hit 99° on November 4, 1976 (notably in fall, not summer), while the coldest ever was a sharp 26° in January 1971. The wettest single day dumped 4.46 inches on February 2, 1988.
Imperial Beach is one of the most temperature-stable places in the country — monthly average highs range only from 64° in early January to 75° in early August, an 11-degree spread across the entire year. If you're chasing warmth, aim for July through October; if you want to avoid rain, skip late January and early February, the wettest stretch of the year.