 Fort Bridgman, in Vernon, was burned in 1755, a casualty of the French and Indian War.According to the United States Census Bureau, the town has a total area of 20.0 square miles (51.8 km2), of which 19.4 square miles (50.2 km2) is land and 0.6 square mile (1.6 km2) (3.15%) is water.This climatic region is typified by large seasonal temperature differences, with warm to hot (and often humid) summers and cold (sometimes severely cold) winters.