Planning for the weather is an important factor for making your trip to Tay Valley a success, especially when you’re splurging. The hottest months are usually July and August with an average temp of 65°F, while the coldest months are January and February with an average of 21°F. The snowiest months in Tay Valley are January, February, April, and December, with each month seeing an average of 19 inches of snowfall.