Weather will likely play an important role when you plan your trip to Spray, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and August with an average temp of 69°F, while the coldest months are December and January with an average of 36°F. The snowiest months in Spray are January, February, March, and April, with each month seeing an average of 9 inches of snowfall.