If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Cardigan: The hottest months are usually August and July with an average temp of 63°F, while the coldest months are February and January with an average of 26°F. The snowiest months in Cardigan are February, January, December, and April, with each month seeing an average of 15 inches of snowfall.