Calgary September 21 Weather Records

Daily averages and all-time records for weather in Calgary, Alberta for the date of September 21.
September 21 All-Time Records
1881–2024
Highest temperature 28.9 °C 1938
Lowest temperature -6.7 °C 1926
Lowest daily high -2.8 °C 1926
Highest daily low 9.4 °C 1938
Most precipitation 2.13 cm 1969
Most snow 11.9 cm 1945
September 21 Average Weather
1991–2020 1
Average high 16.9 °C
Average low 3.7 °C
Chance precipitation 28.3%
Chance snow 6.0%
Calgary September 21 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 15.6 2.7 0.00 0.0
2022 16.7 -0.1 0.00 0.0
2021 23.0 5.4 0.00 0.0
2020 21.2 4.7 0.00 0.0
2019 20.0 4.2 0.00 0.0
2018 5.8 -0.2 0.42 0.2
2017 3.7 1.4 0.46 0.0
2016 12.7 2.8 0.00 0.0
2015 11.1 -0.5 0.18 0.0
2014 25.6 5.3 0.00 0.0
2013 24.0 5.5 0.00 0.0
2012 25.6 5.2 0.00 0.0
2011 25.4 2.9 0.00 0.0
2010 5.2 0.4 0.10 0.0
2009 21.8 1.8 0.00 0.0
2008 14.5 7.6 0.44 0.0
2007 15.6 -0.3 0.00 0.0
2006 9.1 1.9 0.40 0.0
2005 13.4 -0.6 0.00 0.0
2004 20.9 -1.3 0.00 0.0
2003 13.8 4.3 0.38 0.0
2002 13.2 0.5 0.00 0.0
2001 20.8 5.3 0.00 0.0
2000 0.5 -3.5 0.04 0.4
1999 26.9 7.4 0.00 0.0
1998 19.7 2.6 0.00 0.0
1997 24.3 4.4 0.00 0.0
1996 13.0 -2.5 0.04 0.0
1995 16.4 -2.6 0.00 0.0
1994 19.0 -2.5 0.00 0.0
1993 11.5 -0.3 0.00 0.0
1992 16.3 -0.4 0.00 0.0
1991 11.8 1.8 0.06 0.0
1990 18.9 5.4 0.00 0.0
1989 19.9 7.9 0.00 0.0
1988 16.5 1.1 0.00 0.0
1987 27.6 9.0 0.00 0.0
1986 15.5 -0.5 0.00 0.0
1985 11.8 1.5 0.02 0.2
1984 3.4 0.3 1.46 7.6
1983 14.6 5.2 0.06 0.0
1982 18.7 1.8 0.00 0.0
1981 15.2 1.8 0.00 0.0
1980 8.4 -1.1 0.02 0.0
1979 15.5 5.3 0.36 0.0
1978 14.9 7.1 0.00 0.0
1977 10.6 3.9 1.82 0.0
1976 25.6 3.3 0.00 0.0
1975 24.4 3.3 0.00 0.0
1974 21.7 1.1 0.00 0.0
1973 14.4 5.0 0.08 0.0
1972 18.3 -2.2 0.00 0.0
1971 14.4 0.6 0.00 0.0
1970 15.6 1.7 0.00 0.0
1969 7.8 2.2 2.13 0.0
1968 2.2 -1.1 0.53 7.4
1967 28.3 6.1 0.00 0.0
1966 26.7 5.6 0.00 0.0
1965 12.8 2.2 0.05 0.0
1964 15.0 1.1 0.00 0.0
1963 26.7 3.9 0.00 0.0
1962 22.2 3.3 0.00 0.0
1961 5.6 -1.1 0.00 0.0
1960 13.9 -2.2 0.00 0.0
1959 14.4 7.2 0.00 0.0
1958 16.7 1.7 0.00 0.0
1957 17.8 3.3 0.00 0.0
1956 15.0 3.3 0.64 0.0
1955 0.6 -2.2 0.56 5.6
1954 19.4 2.2 0.00 0.0
1953 18.3 -1.7 0.00 0.0
1952 18.3 3.9 0.00 0.0
1951 15.0 1.7 0.10 0.0
1950 26.1 8.3 0.00 0.0
1949 21.7 6.1 0.00 0.0
1948 22.2 6.1 0.00 0.0
1947 15.0 2.2 0.18 0.0
1946 11.1 3.9 0.00 0.0
1945 2.2 -0.6 1.19 11.9
1944 12.8 1.7 0.00 0.0
1943 16.7 0.0 0.00 0.0
1942 19.4 3.3 0.00 0.0
1941 15.0 -2.8 0.00 0.0
1940 18.3 8.9 0.00 0.0
1939 21.7 6.1 0.05 0.0
1938 28.9 9.4 0.00 0.0
1937 10.6 5.6 1.52 0.0
1936 27.2 6.1 0.00 0.0
1935 25.6 1.1 0.00 0.0
1934 2.2 -0.6 0.20 2.0
1933 17.2 2.8 0.00 0.0
1932 13.3 -1.1 0.00 0.0
1931 8.3 2.2 0.36 0.0
1930 13.3 4.4 0.00 0.0
1929 17.8 4.4 0.00 0.0
1928 26.7 2.8 0.00 0.0
1927 20.0 3.3 0.00 0.0
1926 -2.8 -6.7 1.02 10.2
1925 22.8 3.9 0.00 0.0
1924 16.1 1.1 0.00 0.0
1923 6.7 -1.1 0.30 3.0
1922 25.6 1.7 0.00 0.0
1921 15.6 3.3 0.00 0.0
1920 18.9 4.4 0.00 0.0
1919 17.8 4.4 0.00 0.0
1918 21.7 6.7 0.00 0.0
1917 26.7 6.7 0.00 0.0
1916 21.1 0.0 0.00 0.0
1915 17.8 0.0 0.00 0.0
1914 18.9 -1.1 0.00 0.0
1913 21.1 3.3 0.00 0.0
1912 18.9 0.0 0.00 0.0
1911 1.1 -1.1 0.41 2.5
1910 16.7 7.8 0.10 0.0
1909 14.4 4.4 0.00 0.0
1908 23.9 3.3 0.00 0.0
1907 21.1 -0.6 0.00 0.0
1906 11.1 5.6 0.00 0.0
1905 21.1 0.6 0.00 0.0
1904 20.6 -2.2 0.00 0.0
1903 10.6 0.6 0.46 0.0
1902 20.6 0.6 0.00 0.0
1901 17.8 3.3 0.00 0.0
1900 17.2 4.4 0.00 0.0
1899 22.2 8.9 0.00 0.0
1898 16.1 1.7 0.00 0.0
1897 26.1 4.4 0.00 0.0
1896 20.0 2.2 0.00 0.0
1895 2.8 -5.0 0.00 0.0
1894 11.1 3.3 1.22 2.0
1893 5.0 -2.8 0.41 4.1
1892 16.1 -2.2 0.00 0.0
1891 15.6 -3.9 0.00 0.0
1890 25.0 3.3 0.00 0.0
1889 16.1 9.4 0.00 0.0
1888 18.3 8.9 0.00 0.0
1887 7.8 2.8 0.08 0.0
1886 23.9 3.3 0.00 0.0
1885 18.3 1.7 0.00 0.0
1884 15.6 4.4 0.00 0.0
1883 n/a n/a n/a n/a
1882 n/a n/a n/a n/a
What's the all-time high for Calgary on 9/21?
For the date of Sep 21, the highest temperature ever reached in Calgary history is 28.9 °C which happened in 1938.
Highest Temperatures in Calgary on September 21
Rank Temperature Year
1 28.9 °C 1938
2 28.3 °C 1967
3 27.6 °C 1987
4 27.2 °C 1936
5 26.9 °C 1999
6 26.7 °C 1928
6 26.7 °C 1966
6 26.7 °C 1917
6 26.7 °C 1963
10 26.1 °C 1897
10 26.1 °C 1950
What's the all-time low for Calgary on 9/21?
For the date of Sep 21, the lowest temperature ever reached in Calgary history is -6.7 °C which happened in 1926.
Lowest Temperatures in Calgary on September 21
Rank Temperature Year
1 -6.7 °C 1926
2 -5.0 °C 1895
3 -3.9 °C 1891
4 -3.5 °C 2000
5 -2.8 °C 1941
5 -2.8 °C 1893
7 -2.6 °C 1995
8 -2.5 °C 1996
8 -2.5 °C 1994
10 -2.2 °C 1955
10 -2.2 °C 1960
10 -2.2 °C 1972
10 -2.2 °C 1904
10 -2.2 °C 1892
Lowest High Temperatures in Calgary on September 21
Rank Temperature Year
1 -2.8 °C 1926
2 0.5 °C 2000
3 0.6 °C 1955
4 1.1 °C 1911
5 2.2 °C 1945
5 2.2 °C 1968
5 2.2 °C 1934
8 2.8 °C 1895
9 3.4 °C 1984
10 3.7 °C 2017
What's the most it has ever rained in Calgary on 9/21?
For the date of Sep 21, the most precipitation ever recorded in Calgary history is 2.13 cm which happened in 1969.
All-Time Most Precipitation in Calgary on September 21
Rank Precipitation Year
1 2.13 cm 1969
2 1.82 cm 1977
3 1.52 cm 1937
4 1.46 cm 1984
5 1.22 cm 1894
6 1.19 cm 1945
7 1.02 cm 1926
8 0.64 cm 1956
9 0.56 cm 1955
10 0.53 cm 1968
All-Time Most Snow in Calgary on September 21
Rank Precipitation Year
1 11.9 cm 1945
2 10.2 cm 1926
3 7.6 cm 1984
4 7.4 cm 1968
5 5.6 cm 1955
6 4.1 cm 1893
7 3.0 cm 1923
8 2.5 cm 1911
9 2.0 cm 1894
9 2.0 cm 1934
Weather Station Details
Years Station Coordinates
2012–2024 Calgary International Airport location
1881–2012 Calgary International Airport location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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