Ottawa June 21 Weather Records

Daily averages and all-time records for weather in Ottawa, Ontario for the date of June 21.
June 21 All-Time Records
1889–2024
Highest temperature 34.2 °C 2012
Lowest temperature 4.4 °C 1940
Lowest daily high 15.0 °C 1963
Highest daily low 23.1 °C 2012
Most precipitation 4.37 cm 1891
Most snow none -
June 21 Average Weather
1991–2020 1
Average high 25.4 °C
Average low 14.4 °C
Chance precipitation 41.3%
Chance snow 0%
Ottawa June 21 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 28.0 16.0 0.00 0.0
2022 21.0 13.0 1.44 0.0
2021 29.0 17.0 0.22 0.0
2020 33.0 17.0 0.00 0.0
2019 24.0 15.0 0.00 0.0
2018 21.0 11.5 0.00 0.0
2017 23.0 14.5 0.00 0.0
2016 23.5 15.0 0.00 0.0
2015 26.6 18.0 0.11 0.0
2014 23.0 12.5 0.00 0.0
2013 27.0 13.7 0.00 0.0
2012 34.2 23.1 0.00 0.0
2011 28.0 13.3 0.00 0.0
2010 25.5 14.3 0.00 0.0
2009 25.6 17.3 0.05 0.0
2008 26.2 12.1 0.24 0.0
2007 21.7 9.5 0.27 0.0
2006 25.0 9.7 0.50 0.0
2005 27.3 13.7 0.26 0.0
2004 24.2 10.1 0.79 0.0
2003 28.5 11.0 0.00 0.0
2002 29.9 16.3 0.00 0.0
2001 26.7 11.5 2.48 0.0
2000 22.9 18.0 2.36 0.0
1999 28.3 12.3 0.00 0.0
1998 31.8 18.3 0.00 0.0
1997 28.4 18.6 1.40 0.0
1996 27.5 20.1 0.48 0.0
1995 25.2 13.6 0.00 0.0
1994 29.8 18.2 0.00 0.0
1993 23.5 17.9 0.80 0.0
1992 15.8 9.9 0.20 0.0
1991 21.8 17.2 0.00 0.0
1990 20.3 14.2 0.92 0.0
1989 28.1 17.9 0.00 0.0
1988 28.8 18.9 0.00 0.0
1987 27.1 10.4 0.00 0.0
1986 24.9 9.2 0.00 0.0
1985 25.4 9.5 0.00 0.0
1984 26.1 9.1 0.00 0.0
1983 30.5 15.5 0.00 0.0
1982 19.5 11.5 0.08 0.0
1981 23.0 12.5 0.60 0.0
1980 24.0 13.0 0.00 0.0
1979 26.5 14.5 0.68 0.0
1978 25.5 15.5 0.26 0.0
1977 21.0 13.5 0.00 0.0
1976 24.4 16.7 0.08 0.0
1975 27.2 11.1 0.00 0.0
1974 20.6 15.6 0.56 0.0
1973 27.8 20.0 0.00 0.0
1972 21.1 18.9 2.69 0.0
1971 23.3 19.4 0.00 0.0
1970 24.4 7.2 0.00 0.0
1969 19.4 8.9 0.00 0.0
1968 22.2 7.8 2.29 0.0
1967 23.9 12.8 1.88 0.0
1966 22.2 11.1 0.00 0.0
1965 28.3 17.2 0.00 0.0
1964 26.7 17.2 0.00 0.0
1963 15.0 8.9 0.00 0.0
1962 25.0 13.3 0.00 0.0
1961 16.1 11.7 1.40 0.0
1960 24.4 10.6 0.00 0.0
1959 25.6 12.8 0.18 0.0
1958 20.0 13.9 0.00 0.0
1957 27.2 12.8 0.00 0.0
1956 27.2 15.6 0.00 0.0
1955 27.8 15.6 0.30 0.0
1954 25.0 21.1 1.09 0.0
1953 32.8 21.1 0.13 0.0
1952 23.9 6.1 0.00 0.0
1951 22.2 17.2 0.00 0.0
1950 19.4 16.1 0.00 0.0
1949 28.9 15.6 1.07 0.0
1948 23.3 12.2 0.00 0.0
1947 25.6 7.8 0.00 0.0
1946 18.9 15.0 0.10 0.0
1945 21.1 12.8 0.05 0.0
1944 18.9 12.8 0.00 0.0
1943 25.0 12.8 0.00 0.0
1942 24.4 15.0 0.00 0.0
1941 33.9 15.6 0.00 0.0
1940 15.0 4.4 0.00 0.0
1939 25.0 13.3 0.00 0.0
1938 33.3 16.1 0.00 0.0
1937 27.8 17.2 0.79 0.0
1936 16.7 8.9 0.00 0.0
1935 21.7 12.2 1.98 0.0
1934 28.3 14.4 0.18 0.0
1933 26.7 17.8 0.41 0.0
1932 23.9 19.4 1.85 0.0
1931 18.3 11.7 0.81 0.0
1930 20.0 15.6 0.84 0.0
1929 27.8 18.3 0.00 0.0
1928 18.9 13.9 0.20 0.0
1927 27.8 11.1 0.00 0.0
1926 24.4 6.7 0.00 0.0
1925 22.8 7.2 0.46 0.0
1924 30.6 13.3 0.00 0.0
1923 30.0 18.3 0.00 0.0
1922 21.7 14.4 0.28 0.0
1921 32.2 14.4 0.00 0.0
1920 21.7 13.3 0.13 0.0
1919 24.4 17.8 0.00 0.0
1918 20.0 7.2 0.36 0.0
1917 22.8 13.9 0.00 0.0
1916 17.8 9.4 0.00 0.0
1915 23.3 8.3 0.00 0.0
1914 26.1 13.9 0.00 0.0
1913 23.9 11.7 0.00 0.0
1912 23.9 10.6 0.00 0.0
1911 22.2 10.0 0.00 0.0
1910 29.4 17.8 0.00 0.0
1909 31.1 16.7 0.00 0.0
1908 25.6 15.0 0.00 0.0
1907 30.0 12.2 0.00 0.0
1906 27.8 16.7 0.00 0.0
1905 26.7 17.2 0.00 0.0
1904 30.6 17.2 0.23 0.0
1903 20.0 13.3 1.37 0.0
1902 19.4 10.0 1.12 0.0
1901 27.2 12.8 0.00 0.0
1900 28.3 12.8 0.00 0.0
1899 21.1 13.3 0.00 0.0
1898 21.1 8.3 0.46 0.0
1897 17.2 7.2 0.05 0.0
1896 26.1 17.2 0.15 0.0
1895 22.2 17.2 0.30 0.0
1894 28.3 17.8 1.14 0.0
1893 30.6 16.7 2.92 0.0
1892 27.8 16.1 0.00 0.0
1891 25.6 18.9 4.37 0.0
1890 27.2 10.0 0.00 0.0
What's the all-time high for Ottawa on 6/21?
For the date of Jun 21, the highest temperature ever reached in Ottawa history is 34.2 °C which happened in 2012.
Highest Temperatures in Ottawa on June 21
Rank Temperature Year
1 34.2 °C 2012
2 33.9 °C 1941
3 33.3 °C 1938
4 33.0 °C 2020
5 32.8 °C 1953
6 32.2 °C 1921
7 31.8 °C 1998
8 31.1 °C 1909
9 30.6 °C 1924
9 30.6 °C 1893
9 30.6 °C 1904
What's the all-time low for Ottawa on 6/21?
For the date of Jun 21, the lowest temperature ever reached in Ottawa history is 4.4 °C which happened in 1940.
Lowest Temperatures in Ottawa on June 21
Rank Temperature Year
1 4.4 °C 1940
2 6.1 °C 1952
3 6.7 °C 1926
4 7.2 °C 1897
4 7.2 °C 1925
4 7.2 °C 1918
4 7.2 °C 1970
8 7.8 °C 1947
8 7.8 °C 1968
10 8.3 °C 1915
10 8.3 °C 1898
Lowest High Temperatures in Ottawa on June 21
Rank Temperature Year
1 15.0 °C 1940
1 15.0 °C 1963
3 15.8 °C 1992
4 16.1 °C 1961
5 16.7 °C 1936
6 17.2 °C 1897
7 17.8 °C 1916
8 18.3 °C 1931
9 18.9 °C 1928
9 18.9 °C 1946
9 18.9 °C 1944
What's the most it has ever rained in Ottawa on 6/21?
For the date of Jun 21, the most precipitation ever recorded in Ottawa history is 4.37 cm which happened in 1891.
All-Time Most Precipitation in Ottawa on June 21
Rank Precipitation Year
1 4.37 cm 1891
2 2.92 cm 1893
3 2.69 cm 1972
4 2.48 cm 2001
5 2.36 cm 2000
6 2.29 cm 1968
7 1.98 cm 1935
8 1.88 cm 1967
9 1.85 cm 1932
10 1.44 cm 2022
Weather Station Details
Years Station Coordinates
1889–2024 Ottawa CDA location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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