Taking into account the local weather in Montcerf-Lytton can help you maximize your time at the pool during your trip. The hottest months are usually July and August with an average temp of 64°F, while the coldest months are January and February with an average of 20°F. The snowiest months in Montcerf-Lytton are January, November, December, and February, with each month seeing an average of 9 inches of snowfall.