Mount Girouard is composed of sedimentary rock laid down during the PrecambriantoJurassic periods. Formed in shallow seas, this sedimentary rock was pushed east and over the top of younger rock during the Laramide orogeny.[4]
Based on the Köppen climate classification, Mount Girouard is located in a subarctic climate with cold, snowy winters, and mild summers.[5] Temperatures can drop below −20 °C (−4 °F) with wind chill factors below −30 °C (−22 °F). Precipitation runoff from the mountain drains into the Bow 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.