If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Lander: The hottest months are usually July and August with an average temp of 67°F, while the coldest months are February and January with an average of 24°F. The snowiest months in Lander are April, November, March, and February, with each month seeing an average of 19 inches of snowfall.