Ottawa April 20 Weather Records

Daily averages and all-time records for weather in Ottawa, Ontario for the date of April 20.
April 20 All-Time Records
1889–2024
Highest temperature 27.0 °C 1987
Lowest temperature -10.6 °C 1897
Lowest daily high 1.1 °C 1928
Highest daily low 14.4 °C 1941
Most precipitation 2.86 cm 1982
Most snow 3.8 cm 1983
April 20 Average Weather
1991–2020 1
Average high 12.9 °C
Average low 2.4 °C
Chance precipitation 42.1%
Chance snow 5.5%
Ottawa April 20 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 11.0 0.0 0.00 0.0
2022 9.0 1.0 0.00 0.0
2021 8.0 4.0 0.00 0.0
2020 n/a n/a n/a n/a
2019 8.0 4.5 0.08 0.0
2018 10.0 -1.0 0.00 0.0
2017 11.0 3.5 0.88 0.0
2016 15.5 0.0 0.00 0.0
2015 9.6 4.3 2.10 0.0
2014 16.0 -1.0 0.00 0.0
2013 6.5 1.0 0.00 0.0
2012 11.2 6.1 0.84 0.0
2011 1.9 -0.4 1.08 0.0
2010 20.2 5.2 0.00 0.0
2009 15.1 2.7 0.80 0.0
2008 24.4 6.2 0.00 0.0
2007 22.2 1.8 0.00 0.0
2006 23.2 6.6 0.00 0.0
2005 11.2 4.5 1.24 0.0
2004 11.5 2.1 0.00 0.0
2003 24.0 6.5 0.00 0.0
2002 10.3 1.3 0.00 0.0
2001 17.5 -2.7 0.00 0.0
2000 14.0 4.3 1.20 0.0
1999 15.2 0.5 0.00 0.0
1998 14.5 7.8 0.00 0.0
1997 12.5 -0.5 0.00 0.0
1996 12.5 5.3 2.38 0.0
1995 11.3 2.8 0.00 0.0
1994 9.8 1.7 0.00 0.0
1993 1.7 -0.7 2.50 0.0
1992 19.1 4.6 0.06 0.0
1991 8.3 4.7 0.92 0.0
1990 11.9 6.1 0.80 0.0
1989 12.4 0.1 0.00 0.0
1988 8.4 -1.7 0.00 0.0
1987 27.0 11.7 0.00 0.0
1986 18.6 7.9 0.84 0.0
1985 15.6 1.5 0.00 0.0
1984 16.3 4.5 0.02 0.0
1983 2.0 -4.0 0.38 3.8
1982 6.5 3.0 2.86 0.0
1981 2.0 -4.0 0.00 0.0
1980 15.0 4.5 0.02 0.0
1979 16.0 -0.5 0.00 0.0
1978 6.0 3.0 1.42 0.0
1977 24.4 8.9 0.03 0.0
1976 18.3 9.4 0.00 0.0
1975 6.7 2.8 0.00 0.0
1974 14.4 -2.8 0.00 0.0
1973 18.3 3.3 0.00 0.0
1972 10.6 1.7 0.00 0.0
1971 11.7 1.7 0.13 0.0
1970 5.0 0.6 0.91 1.0
1969 10.0 -1.7 0.00 0.0
1968 19.4 6.7 0.00 0.0
1967 10.6 0.0 0.00 0.0
1966 12.2 7.2 0.03 0.0
1965 10.0 -1.1 0.00 0.0
1964 6.1 1.1 0.00 0.0
1963 16.1 4.4 0.08 0.0
1962 15.0 0.0 0.00 0.0
1961 16.1 -2.2 0.00 0.0
1960 7.2 0.0 0.08 0.0
1959 9.4 -1.1 0.00 0.0
1958 17.8 8.3 0.58 0.0
1957 24.4 11.1 0.00 0.0
1956 2.8 -3.3 0.00 0.0
1955 14.4 -0.6 0.05 0.0
1954 11.1 5.0 0.23 0.0
1953 6.7 -0.6 0.30 0.0
1952 15.6 9.4 0.00 0.0
1951 9.4 0.0 n/a n/a
1950 11.1 3.9 0.00 0.0
1949 14.4 1.7 0.05 0.0
1948 15.0 7.2 1.30 0.0
1947 6.1 -2.8 0.00 0.0
1946 8.9 0.0 0.00 0.0
1945 10.6 1.7 0.05 0.0
1944 11.7 0.0 0.00 0.0
1943 2.8 0.6 0.13 0.0
1942 7.2 2.2 0.00 0.0
1941 26.7 14.4 0.43 0.0
1940 7.8 -1.7 0.18 0.0
1939 7.2 0.6 0.00 0.0
1938 18.3 10.0 0.00 0.0
1937 10.0 2.8 0.00 0.0
1936 11.7 1.7 0.18 0.0
1935 12.8 5.0 0.00 0.0
1934 8.3 0.0 0.00 0.0
1933 15.0 -0.6 0.00 0.0
1932 18.3 -0.6 0.00 0.0
1931 23.9 4.4 0.00 0.0
1930 9.4 -2.8 0.00 0.0
1929 12.8 -2.2 0.00 0.0
1928 1.1 -7.8 0.25 2.5
1927 24.4 13.3 0.00 0.0
1926 4.4 -7.8 0.00 0.0
1925 7.8 -4.4 0.00 0.0
1924 10.6 -2.2 0.00 0.0
1923 23.9 -1.1 0.00 0.0
1922 8.9 -1.7 0.20 0.0
1921 21.1 0.6 0.00 0.0
1920 20.0 1.7 0.00 0.0
1919 13.9 5.0 0.18 0.0
1918 11.7 -5.0 0.00 0.0
1917 11.1 3.3 0.74 0.0
1916 8.9 -8.3 0.00 0.0
1915 17.2 6.1 0.00 0.0
1914 12.8 0.6 0.05 0.0
1913 7.2 -6.1 0.00 0.0
1912 12.2 -3.3 0.00 0.0
1911 12.8 1.7 0.00 0.0
1910 15.0 6.7 0.46 0.0
1909 9.4 -1.1 0.00 0.0
1908 6.7 -5.0 0.00 0.0
1907 5.6 -6.7 0.00 0.0
1906 20.0 7.2 0.00 0.0
1905 15.6 3.9 0.00 0.0
1904 2.2 -8.9 0.25 2.5
1903 10.0 -2.8 0.00 0.0
1902 13.9 2.8 0.10 0.0
1901 6.7 -0.6 0.66 2.5
1900 17.8 2.8 0.00 0.0
1899 17.2 3.9 0.00 0.0
1898 10.0 3.3 0.84 0.0
1897 2.2 -10.6 0.00 0.0
1896 20.0 5.6 0.00 0.0
1895 17.2 3.3 0.00 0.0
1894 22.2 13.3 0.00 0.0
1893 6.1 -3.3 2.44 0.0
1892 16.7 1.1 0.00 0.0
1891 14.4 5.6 0.00 0.0
1890 13.9 -3.9 0.00 0.0
What's the all-time high for Ottawa on 4/20?
For the date of Apr 20, the highest temperature ever reached in Ottawa history is 27.0 °C which happened in 1987.
Highest Temperatures in Ottawa on April 20
Rank Temperature Year
1 27.0 °C 1987
2 26.7 °C 1941
3 24.4 °C 1977
3 24.4 °C 1957
3 24.4 °C 2008
3 24.4 °C 1927
7 24.0 °C 2003
8 23.9 °C 1923
8 23.9 °C 1931
10 23.2 °C 2006
What's the all-time low for Ottawa on 4/20?
For the date of Apr 20, the lowest temperature ever reached in Ottawa history is -10.6 °C which happened in 1897.
Lowest Temperatures in Ottawa on April 20
Rank Temperature Year
1 -10.6 °C 1897
2 -8.9 °C 1904
3 -8.3 °C 1916
4 -7.8 °C 1928
4 -7.8 °C 1926
6 -6.7 °C 1907
7 -6.1 °C 1913
8 -5.0 °C 1918
8 -5.0 °C 1908
10 -4.4 °C 1925
Lowest High Temperatures in Ottawa on April 20
Rank Temperature Year
1 1.1 °C 1928
2 1.7 °C 1993
3 1.9 °C 2011
4 2.0 °C 1981
4 2.0 °C 1983
6 2.2 °C 1897
6 2.2 °C 1904
8 2.8 °C 1943
8 2.8 °C 1956
10 4.4 °C 1926
What's the most it has ever rained in Ottawa on 4/20?
For the date of Apr 20, the most precipitation ever recorded in Ottawa history is 2.86 cm which happened in 1982.
All-Time Most Precipitation in Ottawa on April 20
Rank Precipitation Year
1 2.86 cm 1982
2 2.50 cm 1993
3 2.44 cm 1893
4 2.38 cm 1996
5 2.10 cm 2015
6 1.42 cm 1978
7 1.30 cm 1948
8 1.24 cm 2005
9 1.20 cm 2000
10 1.08 cm 2011
All-Time Most Snow in Ottawa on April 20
Rank Precipitation Year
1 3.8 cm 1983
2 2.5 cm 1904
2 2.5 cm 1928
2 2.5 cm 1901
5 1.0 cm 1970
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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