Planning for the weather is a good way to make your trip to Weyburn relaxing and enjoyable, especially when you’re splurging. The hottest months are usually July and August, with an average temperature of 19°C, while the coldest months are February and January, with an average of -10°C. The snowiest months in Weyburn are April, March, November and February, with each month seeing an average of 29 cm of snowfall.