Planning for the weather is a good way to make your trip to Oliverea relaxing and enjoyable, especially when you're splurging. The hottest months are usually July and August with an average temp of 62°F, while the coldest months are January and February with an average of 24°F. The snowiest months in Oliverea are January, February, December, and March, with each month seeing an average of 9 inches of snowfall.