About Aosta, Aosta Valley's Climate & Weather History

Aosta, in Aosta Valley, Italy, is home to roughly 35,300 people in the Central European time zone at 45.7°N latitude.

In 2025, Aosta recorded an average annual temperature of 56°F. The hottest temperatures reached 100°F in August; the coolest were 16°F in February. Total precipitation for the year was 55 inches, with the wettest month being April. Snowfall for the year totaled approximately 59 inches.