Planning for the weather is an important factor for making your trip to Grayling a success, especially when you’re splurging. The hottest months are usually July and August, with an average temperature of 18°C, while the coldest months are February and January, with an average of -4°C. The snowiest months in Grayling are January, November, February and March, with each month seeing an average of 27 cm of snowfall.