About Gaillon, Normandy's Climate & Weather History

Gaillon is a city of approximately 6,800 people in Normandy, France. Located in the Central European time zone at 49.2°N latitude.

In 2025, Gaillon recorded an average annual temperature of 53°F. The hottest temperatures reached 96°F in July; the coolest were 24°F in January. Total precipitation for the year was 28 inches, with the wettest month being January. Snowfall for the year totaled approximately 2 inches.