About Decatur, GA's Climate & Weather History

Decatur is a city of approximately 22,000 people in Georgia, United States. Located in the Eastern Time Zone at 33.8°N latitude.

In 2025, Decatur recorded an average annual temperature of 62°F — about 1.3°F below the 30-year normal of 64°F. The hottest day reached 99°F in June; the coldest was 11°F in January. Total precipitation was 45 inches (drier than usual). Snowfall totaled 1 inches, near the 2-inch average. The wettest month was May.