Based on the Köppen climate classification, Caledonia Mountain is located in a subarctic climate with cold, snowy winters, and mild summers.[4] Temperatures can drop below −20 °C with wind chill factors below −30 °C. In terms of favorable weather, June through September are the best months to climb. Precipitation runoff from the mountain drains west into tributaries of the Fraser River, or east into Miette River.
^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.