Planning for the weather is a good way to make your trip to Armstrong Creek relaxing and enjoyable, 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 January and February, with an average of -6°C. The snowiest months in Armstrong Creek are January, April, March and May, with each month seeing an average of 18 cm of snowfall.