About Green Valley, CA's Climate & Weather History

With a population of around 1,600, Green Valley sits in California, United States. The city operates in the Pacific Time Zone.

In 2025, Green Valley recorded an average annual temperature of 58°F — right at the 30-year normal of 58°F. The hottest day reached 96°F in August; the coldest was 31°F in January. Total precipitation was 24 inches (wetter than usual). The wettest month was February.