Planning for the weather is an important factor for making your trip to Mount Ayr a success, especially when you're splurging. The hottest months are usually July and August, with an average temperature of 22°C, while the coldest months are January and February, with an average of -1°C. The snowiest months in Mount Ayr are January, November, December and February, with each month seeing an average of 23 cm of snowfall.