Based on the Köppen climate classification, Cirrus Mountain is located in a subarctic climate with cold, snowy winters, and mild summers. Temperatures can drop below -20 °C with wind chill factors below -30 °C. Weather conditions during winter make the Weeping Wall at the base of Cirrus Mountain's west face the premier place for ice climbing in the Canadian Rockies. Precipitation runoff from Cirrus Mountain drains into tributaries of the North Saskatchewan River.