Planning for the weather is an important factor for making your trip to Westlake a success, especially when you're splurging. The hottest months are usually July and August, with an average temperature of 21°C, while the coldest months are January and February, with an average of 0°C. The snowiest months in Westlake are January, March, February and November, with each month seeing an average of 14 cm of snowfall.