Earliest and Latest Snowfalls in Calgary History

This is a list of the earliest and latest times in the year when snow was recorded in Calgary, Alberta. It is based on NOAA data from the years 1881–2024.

What's the Earliest it has Snowed in Calgary?

The earliest in the season it has snowed in Calgary, Alberta is August 15 which happened in 1946.

What's the Latest it has Snowed in Calgary?

The latest in the season it has snowed in Calgary, Alberta is June 26 which happened in 1951.

Earliest Snowfalls

Date	Year	Snowfall
August 15	1946	0.3 cm
August 16	1946	1.0 cm
August 21	1992	0.2 cm
August 22	1992	0.4 cm
August 23	1992	0.4 cm
August 25	1900	6.1 cm
August 26	1900	4.3 cm
September 5	1992	4.2 cm
September 5	1946	4.1 cm
September 6	1992	3.2 cm
September 6	1985	5.6 cm
September 6	1972	13.7 cm
September 6	1946	1.8 cm
September 7	1985	1.0 cm
September 7	1962	11.4 cm
September 8	2014	11.8 cm
September 8	1992	1.2 cm
September 8	1959	0.3 cm
September 8	1921	11.7 cm
September 9	2014	1.3 cm
September 9	1964	3.6 cm
September 9	1955	1.0 cm
September 9	1921	11.9 cm
September 9	1889	1.3 cm

Latest Snowfalls

Date	Year	Snowfall
June 26	1951	6.4 cm
June 15	1905	7.6 cm
June 13	1976	0.3 cm
June 12	1901	6.1 cm
June 11	1969	2.8 cm
June 11	1926	0.8 cm
June 10	1967	5.1 cm
June 9	1958	1.0 cm
June 7	1938	5.1 cm
June 6	2009	3.2 cm
June 6	1951	24.9 cm
June 5	2009	0.6 cm
June 5	1951	15.5 cm
June 5	1943	0.5 cm
June 5	1901	5.1 cm
June 4	1944	10.2 cm
June 4	1901	2.5 cm
June 2	1910	15.2 cm
May 29	2010	11.8 cm
May 29	1942	1.0 cm