Calgary August 18 Weather Records

Daily averages and all-time records for weather in Calgary, Alberta for the date of August 18.
August 18 All-Time Records
1881–2024
Highest temperature 34.0 °C 2008
Lowest temperature 0.6 °C 1973
Lowest daily high 10.0 °C 1935
Highest daily low 16.0 °C 2020
Most precipitation 5.44 cm 1902
Most snow none -
August 18 Average Weather
1991–2020 1
Average high 22.9 °C
Average low 9.1 °C
Chance precipitation 33.4%
Chance snow 0.3%
Calgary August 18 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 27.6 6.7 0.22 0.0
2022 31.0 11.7 0.00 0.0
2021 19.9 5.8 0.00 0.0
2020 33.4 16.0 0.00 0.0
2019 25.0 11.1 0.00 0.0
2018 19.1 7.8 0.00 0.0
2017 28.8 8.8 0.00 0.0
2016 17.9 11.1 0.04 0.0
2015 19.1 10.0 0.12 0.0
2014 28.0 12.3 0.00 0.0
2013 27.5 12.1 0.00 0.0
2012 28.1 9.5 0.00 0.0
2011 15.9 8.1 0.60 0.0
2010 29.1 12.5 0.00 0.0
2009 25.0 14.0 0.36 0.0
2008 34.0 14.1 0.00 0.0
2007 24.1 7.3 0.02 0.0
2006 27.4 7.5 0.00 0.0
2005 13.5 4.5 0.00 0.0
2004 23.2 7.8 0.00 0.0
2003 32.6 11.0 0.00 0.0
2002 20.0 5.3 0.00 0.0
2001 33.3 11.4 0.00 0.0
2000 28.9 5.8 0.00 0.0
1999 24.5 7.5 0.00 0.0
1998 22.1 6.8 0.00 0.0
1997 22.3 5.2 0.04 0.0
1996 19.2 3.0 0.00 0.0
1995 18.2 5.7 0.18 0.0
1994 22.2 11.5 0.04 0.0
1993 n/a n/a n/a n/a
1992 31.4 13.3 0.12 0.0
1991 30.1 13.3 0.00 0.0
1990 20.4 11.9 1.84 0.0
1989 20.3 10.4 0.00 0.0
1988 20.6 11.5 0.42 0.0
1987 19.5 6.8 0.02 0.0
1986 30.2 8.6 0.00 0.0
1985 24.7 7.9 0.00 0.0
1984 25.5 10.0 0.00 0.0
1983 15.0 6.1 3.24 0.0
1982 25.3 9.0 0.00 0.0
1981 25.8 9.1 0.00 0.0
1980 17.5 9.4 0.27 0.0
1979 28.4 10.7 0.00 0.0
1978 21.3 5.1 0.00 0.0
1977 23.6 7.3 0.05 0.0
1976 20.6 5.6 0.00 0.0
1975 15.0 8.9 0.03 0.0
1974 27.2 10.6 0.00 0.0
1973 11.7 0.6 0.00 0.0
1972 23.3 7.2 0.00 0.0
1971 25.0 10.6 0.00 0.0
1970 18.9 4.4 0.00 0.0
1969 26.7 3.9 0.00 0.0
1968 19.4 9.4 0.03 0.0
1967 32.2 10.0 0.00 0.0
1966 11.7 7.2 0.05 0.0
1965 23.3 13.9 0.05 0.0
1964 29.4 10.6 0.00 0.0
1963 26.7 7.2 0.00 0.0
1962 20.6 9.4 0.03 0.0
1961 17.8 9.4 0.00 0.0
1960 27.8 13.9 0.00 0.0
1959 16.7 5.0 0.25 0.0
1958 25.6 6.1 0.00 0.0
1957 22.2 8.3 0.89 0.0
1956 14.4 7.2 0.00 0.0
1955 28.3 6.7 0.00 0.0
1954 21.1 6.7 0.00 0.0
1953 27.8 11.1 0.00 0.0
1952 23.3 8.9 0.00 0.0
1951 21.7 8.3 0.00 0.0
1950 11.1 3.9 0.00 0.0
1949 22.2 10.0 0.00 0.0
1948 28.9 10.0 0.00 0.0
1947 25.0 5.6 0.00 0.0
1946 26.7 5.6 0.00 0.0
1945 26.7 9.4 0.00 0.0
1944 16.7 8.9 0.08 0.0
1943 25.0 10.0 0.00 0.0
1942 27.8 14.4 0.00 0.0
1941 25.0 7.8 0.00 0.0
1940 27.8 2.2 0.00 0.0
1939 18.3 8.9 0.00 0.0
1938 15.0 9.4 0.36 0.0
1937 20.0 6.7 0.20 0.0
1936 15.6 10.0 1.57 0.0
1935 10.0 5.0 0.30 0.0
1934 21.1 8.9 0.00 0.0
1933 26.7 10.6 0.00 0.0
1932 30.0 11.1 0.00 0.0
1931 27.2 9.4 0.00 0.0
1930 22.2 11.1 0.00 0.0
1929 26.7 7.2 0.00 0.0
1928 25.0 5.0 0.00 0.0
1927 17.8 10.0 0.58 0.0
1926 22.2 5.0 0.00 0.0
1925 20.6 10.0 0.00 0.0
1924 23.3 7.2 0.18 0.0
1923 27.8 11.7 0.00 0.0
1922 30.0 6.7 0.00 0.0
1921 21.1 7.8 0.64 0.0
1920 15.0 3.3 0.00 0.0
1919 33.3 12.2 0.00 0.0
1918 26.7 9.4 0.71 0.0
1917 27.8 11.1 0.00 0.0
1916 10.6 8.3 1.73 0.0
1915 24.4 12.2 0.41 0.0
1914 23.9 9.4 0.00 0.0
1913 20.6 4.4 0.10 0.0
1912 20.0 5.6 0.00 0.0
1911 25.0 7.2 0.00 0.0
1910 24.4 5.6 0.00 0.0
1909 28.3 6.1 0.00 0.0
1908 23.3 7.8 0.00 0.0
1907 11.1 2.2 0.51 0.0
1906 15.6 8.9 0.00 0.0
1905 23.9 5.6 0.00 0.0
1904 20.0 6.1 0.20 0.0
1903 23.3 6.7 0.00 0.0
1902 12.2 10.0 5.44 0.0
1901 21.7 1.7 0.00 0.0
1900 21.1 6.7 0.20 0.0
1899 22.2 6.7 0.00 0.0
1898 27.2 8.3 0.00 0.0
1897 31.1 11.1 0.00 0.0
1896 22.2 8.3 0.00 0.0
1895 18.9 3.3 0.00 0.0
1894 29.4 7.8 0.00 0.0
1893 26.1 6.7 0.00 0.0
1892 17.8 6.7 0.15 0.0
1891 23.9 10.0 0.00 0.0
1890 22.2 0.6 0.00 0.0
1889 23.9 6.7 0.00 0.0
1888 29.4 11.1 0.00 0.0
1887 26.1 7.2 0.00 0.0
1886 27.8 5.0 0.00 0.0
1885 27.2 6.7 0.00 0.0
1884 18.9 5.6 0.58 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 8/18?
For the date of Aug 18, the highest temperature ever reached in Calgary history is 34.0 °C which happened in 2008.
Highest Temperatures in Calgary on August 18
Rank Temperature Year
1 34.0 °C 2008
2 33.4 °C 2020
3 33.3 °C 2001
3 33.3 °C 1919
5 32.6 °C 2003
6 32.2 °C 1967
7 31.4 °C 1992
8 31.1 °C 1897
9 31.0 °C 2022
10 30.2 °C 1986
What's the all-time low for Calgary on 8/18?
For the date of Aug 18, the lowest temperature ever reached in Calgary history is 0.6 °C which has happened 2 times, most recently in 1973.
Lowest Temperatures in Calgary on August 18
Rank Temperature Year
1 0.6 °C 1890
1 0.6 °C 1973
3 1.7 °C 1901
4 2.2 °C 1940
4 2.2 °C 1907
6 3.0 °C 1996
7 3.3 °C 1895
7 3.3 °C 1920
9 3.9 °C 1969
9 3.9 °C 1950
Lowest High Temperatures in Calgary on August 18
Rank Temperature Year
1 10.0 °C 1935
2 10.6 °C 1916
3 11.1 °C 1907
3 11.1 °C 1950
5 11.7 °C 1966
5 11.7 °C 1973
7 12.2 °C 1902
8 13.5 °C 2005
9 14.4 °C 1956
10 15.0 °C 1975
10 15.0 °C 1920
10 15.0 °C 1938
10 15.0 °C 1983
What's the most it has ever rained in Calgary on 8/18?
For the date of Aug 18, the most precipitation ever recorded in Calgary history is 5.44 cm which happened in 1902.
All-Time Most Precipitation in Calgary on August 18
Rank Precipitation Year
1 5.44 cm 1902
2 3.24 cm 1983
3 1.84 cm 1990
4 1.73 cm 1916
5 1.57 cm 1936
6 0.89 cm 1957
7 0.71 cm 1918
8 0.64 cm 1921
9 0.60 cm 2011
10 0.58 cm 1884
10 0.58 cm 1927
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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