Environment Canada (no date). National Climate Data and Information Archive. Last updated March 18, 2010. http://www.climate.weatheroffice.gc.ca/Welcome_e.html (accessed June 14,2010).

Yearly averages calculated as the average of the monthly mean temperatures, except as noted below.

Weather Stations Used:

1885-2009: Calgary Intl A, Climate ID 3031093

Weather Stations Used (See entry for “Calgary” for complete reference):

1883-1937: Edmonton, Climate ID 3012195
1938-1960: Edmonton City Centre A, Climate ID 3012208
1961-2009: Edmonton Int’l A, Climate ID 3012205

Weather Stations Used (See entry for “Calgary” for complete reference):

1904-1974: Red Deer, Climate ID 3025440
1975-2005: Red Deer, Climate ID 3025441
2006-2009: Red Deer A, Climate ID 3025480, yearly average calculated as the average of daily mean temperatures for 2006-2009.

Weather Stations Used (See entry for “Calgary” for complete reference):

1919-1943: Ft McMurray, Climate ID 3062695
1944-2006: Fort McMurray A, Climate ID 3062693

Weather Stations Used (See entry for “Calgary” for complete reference):

1923-1935: Grande Prairie, Climate ID 3072910
1943-2006: Grande Prairie A, Climate ID 3072920
2007-2009: Grande Prairie A, Climate ID 3072920, yearly average calculated as the average of daily mean temperatures for 2007-2009.

Weather Stations Used (See entry for “Calgary” for complete reference):

1902-1908: Lethbridge, Climate ID 3033879
1909-1937: Lethbridge CDA, Climate ID 3033890
1938-2006: Lethbridge A, Climate ID 3033880
2007-2009: Lethbridge AWOS A, Climate ID 3033884, yearly average calculated as the average of daily mean temperatures for 2007-2009.

Weather Stations Used (See entry for “Calgary” for complete reference):

1890-1994: Banff, Climate ID 3050520
1996-2006: Banff CS, Climate ID 3050519
2007-2009: Banff CS, Climate ID 3050519, yearly average calculated as the average of daily mean temperatures for 2007-2009.