Calgary October 21 Weather Records

Daily averages and all-time records for weather in Calgary, Alberta for the date of October 21.
October 21 All-Time Records
1881–2024
Highest temperature 24.7 °C 2003
Lowest temperature -17.8 °C 1961
Lowest daily high -7.8 °C 1933
Highest daily low 7.8 °C 1965
Most precipitation 2.39 cm 1957
Most snow 23.9 cm 1957
October 21 Average Weather
1991–2020 1
Average high 9.9 °C
Average low -2.3 °C
Chance precipitation 26.2%
Chance snow 16.8%
Calgary October 21 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 9.8 0.6 0.00 0.0
2022 6.2 0.9 0.22 0.0
2021 16.1 2.6 0.00 0.0
2020 -2.6 -9.1 0.22 2.6
2019 10.8 -3.3 0.00 0.0
2018 12.4 -3.0 0.00 0.0
2017 10.2 -4.0 0.00 0.0
2016 12.1 -1.3 0.00 0.0
2015 20.0 1.4 0.00 0.0
2014 16.4 5.6 0.00 0.0
2013 n/a n/a n/a n/a
2012 -3.4 -5.5 0.02 0.2
2011 10.3 -1.7 0.00 0.0
2010 21.1 2.8 0.00 0.0
2009 8.8 0.7 0.00 0.0
2008 9.9 3.1 0.00 0.0
2007 10.4 -6.6 0.00 0.0
2006 6.8 -1.6 0.12 0.0
2005 10.8 -6.5 0.00 0.0
2004 -1.8 -4.8 0.32 4.0
2003 24.7 7.7 0.00 0.0
2002 6.8 -4.3 0.42 2.0
2001 6.0 -5.1 0.00 0.0
2000 10.7 -1.9 0.00 0.0
1999 21.9 -1.6 0.00 0.0
1998 22.3 1.3 0.00 0.0
1997 13.3 0.2 0.00 0.0
1996 10.9 -4.7 0.00 0.0
1995 9.9 -3.2 0.00 0.0
1994 9.9 -1.8 0.00 0.0
1993 13.9 2.1 0.00 0.0
1992 11.5 1.6 0.12 0.0
1991 7.4 -6.0 0.22 2.2
1990 12.0 -2.2 0.00 0.0
1989 16.1 -1.1 0.00 0.0
1988 21.0 0.6 0.00 0.0
1987 12.2 -1.9 0.00 0.0
1986 18.1 3.2 0.00 0.0
1985 18.2 5.8 0.00 0.0
1984 1.2 -10.8 0.00 0.0
1983 15.7 -1.5 0.00 0.0
1982 13.2 3.0 0.00 0.0
1981 3.8 -5.6 0.00 0.0
1980 4.9 -1.2 1.24 12.0
1979 -1.3 -11.7 0.00 0.0
1978 6.6 -1.6 0.02 0.2
1977 11.7 -3.3 0.00 0.0
1976 12.2 -5.6 0.00 0.0
1975 6.7 -5.6 0.00 0.0
1974 10.6 -1.7 0.00 0.0
1973 10.6 0.0 0.00 0.0
1972 7.2 -1.1 0.00 0.0
1971 10.0 -5.0 0.00 0.0
1970 9.4 -0.6 0.03 0.0
1969 8.3 -2.8 0.00 0.0
1968 10.6 -5.0 0.00 0.0
1967 16.1 -2.2 0.00 0.0
1966 6.7 -7.2 0.00 0.0
1965 21.1 7.8 0.00 0.0
1964 16.1 1.7 0.00 0.0
1963 17.2 1.7 0.00 0.0
1962 8.3 -0.6 0.30 2.0
1961 -3.3 -17.8 0.10 1.0
1960 15.6 2.2 0.00 0.0
1959 13.9 -2.2 0.00 0.0
1958 16.1 3.3 0.00 0.0
1957 -0.6 -6.7 2.39 23.9
1956 5.0 -0.6 0.00 0.0
1955 15.0 -0.6 0.00 0.0
1954 13.3 1.7 0.00 0.0
1953 10.6 -1.1 0.00 0.0
1952 18.9 2.2 0.00 0.0
1951 -7.2 -16.1 0.00 0.0
1950 3.3 -3.3 0.00 0.0
1949 13.3 -4.4 0.00 0.0
1948 12.2 3.3 0.00 0.0
1947 2.2 -0.6 0.18 1.8
1946 11.1 1.1 0.00 0.0
1945 5.6 -5.0 0.00 0.0
1944 17.8 -2.8 0.00 0.0
1943 4.4 -3.3 0.03 0.0
1942 15.6 3.9 0.15 0.0
1941 21.1 1.1 0.00 0.0
1940 18.3 5.0 0.00 0.0
1939 17.8 2.8 0.03 0.3
1938 16.1 1.7 0.00 0.0
1937 22.2 0.6 0.00 0.0
1936 -1.1 -14.4 0.20 2.0
1935 0.0 -12.2 0.00 0.0
1934 0.6 -2.8 0.05 0.5
1933 -7.8 -10.0 0.15 1.5
1932 7.8 1.1 0.00 0.0
1931 6.7 -8.9 0.00 0.0
1930 13.3 -7.8 0.00 0.0
1929 13.9 2.2 0.00 0.0
1928 11.1 -8.3 0.00 0.0
1927 22.2 1.7 0.00 0.0
1926 11.7 4.4 0.00 0.0
1925 20.6 4.4 0.00 0.0
1924 22.8 4.4 0.00 0.0
1923 16.1 4.4 0.00 0.0
1922 14.4 0.6 0.00 0.0
1921 11.1 -1.1 0.00 0.0
1920 14.4 -3.3 0.56 0.0
1919 7.8 -4.4 0.13 0.0
1918 18.9 1.1 0.05 0.5
1917 6.7 -8.9 0.20 2.0
1916 10.0 -2.2 0.00 0.0
1915 23.3 0.0 0.00 0.0
1914 10.0 -3.3 0.00 0.0
1913 12.8 -3.3 0.00 0.0
1912 6.1 -9.4 0.00 0.0
1911 15.6 1.1 0.00 0.0
1910 10.6 0.0 0.00 0.0
1909 2.8 -2.2 0.00 0.0
1908 1.1 -2.8 0.08 0.8
1907 16.7 6.7 0.00 0.0
1906 12.2 -5.6 0.00 0.0
1905 12.2 -8.3 0.00 0.0
1904 11.7 -1.7 0.00 0.0
1903 8.9 0.0 0.00 0.0
1902 16.7 1.1 0.00 0.0
1901 23.3 2.8 0.00 0.0
1900 17.8 2.8 0.00 0.0
1899 8.9 -6.7 0.00 0.0
1898 13.3 -3.9 0.00 0.0
1897 15.0 0.6 0.00 0.0
1896 12.2 2.8 0.00 0.0
1895 15.6 0.6 0.00 0.0
1894 8.9 -3.9 0.00 0.0
1893 6.7 -2.2 0.76 7.6
1892 7.2 -3.9 0.00 0.0
1891 18.3 -3.9 0.00 0.0
1890 16.7 -1.1 0.00 0.0
1889 6.1 -8.3 0.00 0.0
1888 13.3 -2.8 0.00 0.0
1887 6.1 -0.6 0.03 0.3
1886 18.3 0.0 0.00 0.0
1885 21.7 -3.9 0.00 0.0
1884 4.4 -5.0 0.00 0.0
1883 n/a n/a n/a n/a
1882 n/a n/a n/a n/a
1881 n/a n/a n/a n/a
What's the all-time high for Calgary on 10/21?
For the date of Oct 21, the highest temperature ever reached in Calgary history is 24.7 °C which happened in 2003.
Highest Temperatures in Calgary on October 21
Rank Temperature Year
1 24.7 °C 2003
2 23.3 °C 1915
2 23.3 °C 1901
4 22.8 °C 1924
5 22.3 °C 1998
6 22.2 °C 1927
6 22.2 °C 1937
8 21.9 °C 1999
9 21.7 °C 1885
10 21.1 °C 1965
10 21.1 °C 2010
10 21.1 °C 1941
What's the all-time low for Calgary on 10/21?
For the date of Oct 21, the lowest temperature ever reached in Calgary history is -17.8 °C which happened in 1961.
Lowest Temperatures in Calgary on October 21
Rank Temperature Year
1 -17.8 °C 1961
2 -16.1 °C 1951
3 -14.4 °C 1936
4 -12.2 °C 1935
5 -11.7 °C 1979
6 -10.8 °C 1984
7 -10.0 °C 1933
8 -9.4 °C 1912
9 -9.1 °C 2020
10 -8.9 °C 1917
10 -8.9 °C 1931
Lowest High Temperatures in Calgary on October 21
Rank Temperature Year
1 -7.8 °C 1933
2 -7.2 °C 1951
3 -3.4 °C 2012
4 -3.3 °C 1961
5 -2.6 °C 2020
6 -1.8 °C 2004
7 -1.3 °C 1979
8 -1.1 °C 1936
9 -0.6 °C 1957
10 0.0 °C 1935
What's the most it has ever rained in Calgary on 10/21?
For the date of Oct 21, the most precipitation ever recorded in Calgary history is 2.39 cm which happened in 1957.
All-Time Most Precipitation in Calgary on October 21
Rank Precipitation Year
1 2.39 cm 1957
2 1.24 cm 1980
3 0.76 cm 1893
4 0.56 cm 1920
5 0.42 cm 2002
6 0.32 cm 2004
7 0.30 cm 1962
8 0.22 cm 2022
8 0.22 cm 1991
8 0.22 cm 2020
All-Time Most Snow in Calgary on October 21
Rank Precipitation Year
1 23.9 cm 1957
2 12.0 cm 1980
3 7.6 cm 1893
4 4.0 cm 2004
5 2.6 cm 2020
6 2.2 cm 1991
7 2.0 cm 1936
7 2.0 cm 1917
7 2.0 cm 1962
7 2.0 cm 2002
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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