Weather is only one factor, but it can really affect your travel plans, especially when you're planning an extended stay in Ericson. The hottest months are usually July and August with an average temp of 72°F, while the coldest months are January and February with an average of 30°F. The snowiest months in Ericson are January, March, December, and October, with each month seeing an average of 8 inches of snowfall.