According to the Köppen climate classification system, Pilot Peak is located in a subarctic climate zone with long, cold, snowy winters, and cool to warm summers.[6] Temperatures can drop below −10 °F with wind chill factors below −30 °F. Precipitation runoff from the mountain drains into tributaries of the Clarks Fork Yellowstone 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. ISSN1027-5606.