About Lemon Grove, CA's Climate & Weather History

With a population of around 26,700, Lemon Grove sits in California, United States. The city operates in the Pacific Time Zone.

In 2025, Lemon Grove recorded an average annual temperature of 64°F — about 1.2°F below the 30-year normal of 65°F. The hottest day reached 97°F in May; the coldest was 39°F in January. Total precipitation was 16 inches (wetter than usual). The wettest month was November.