About Lakeside, CA's Climate & Weather History

With a population of around 20,600, Lakeside sits in California, United States. The city operates in the Pacific Time Zone.

In 2025, Lakeside recorded an average annual temperature of 65°F — about 3.4°F above the 30-year normal of 61°F. The hottest day reached 100°F in May; the coldest was 40°F in January. Total precipitation was 21 inches (wetter than usual). The wettest month was March.