Though weather is just one factor, it can really affect your travel plans, especially if you're planning an extended stay in Lake Blatchford. The hottest months are usually July and August with an average temp of 56°F, while the coldest months are January and February with an average of -5°F. The snowiest months in Lake Blatchford are November, December, February, and January, with each month seeing an average of 11 inches of snowfall.