Based on the Köppen climate classification, Xerxes Peak is located in a subarctic climate with long, cold, snowy winters, and short mild summers.[5] Temperatures can drop below -20 °C with wind chill factors below -30 °C. Precipitation runoff from Xerxes Peak drains into Fryatt Creek and Lick Creek, both tributaries of the Athabasca River.
^Gadd, Ben (2008), Geology of the Rocky Mountains and Columbias
^Peel, M. C.; Finlayson, B. L.; McMahon, T. A. (2007). "Updated world map of the Köppen−Geiger climate classification". Hydrol. Earth Syst. Sci. 11: 1633–1644. ISSN1027-5606.