If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Easton: The hottest months are usually August and July, with an average temperature of 14°C, while the coldest months are December and January, with an average of -3°C. The snowiest months in Easton are January, December, February and March, with each month seeing an average of 187 cm of snowfall.