Ottawa May 31 Weather Records

Daily averages and all-time records for weather in Ottawa, Ontario for the date of May 31.
May 31 All-Time Records
1889–2024
Highest temperature 32.2 °C 1944
Lowest temperature 0.6 °C 1961
Lowest daily high 7.2 °C 1946
Highest daily low 20.0 °C 2018
Most precipitation 4.75 cm 1921
Most snow none -
May 31 Average Weather
1991–2020 1
Average high 22.0 °C
Average low 11.0 °C
Chance precipitation 43.1%
Chance snow 0.1%
Ottawa May 31 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 32.0 12.0 0.00 0.0
2022 24.0 18.0 0.12 0.0
2021 24.0 4.5 0.00 0.0
2020 13.5 4.0 0.00 0.0
2019 15.0 5.5 0.00 0.0
2018 26.0 20.0 0.14 0.0
2017 22.0 12.0 0.08 0.0
2016 23.0 14.5 0.00 0.0
2015 14.0 7.5 0.00 0.0
2014 23.1 10.5 0.00 0.0
2013 32.1 18.4 0.32 0.0
2012 17.9 10.3 0.00 0.0
2011 30.5 15.9 0.00 0.0
2010 24.2 13.2 0.64 0.0
2009 11.5 4.7 0.14 0.0
2008 22.8 11.2 1.72 0.0
2007 21.8 16.2 1.28 0.0
2006 30.4 17.2 1.20 0.0
2005 24.8 9.8 0.00 0.0
2004 20.5 6.8 0.33 0.0
2003 18.0 12.6 0.04 0.0
2002 23.7 15.2 1.15 0.0
2001 17.1 4.6 0.00 0.0
2000 21.2 14.2 0.02 0.0
1999 32.0 16.5 0.31 0.0
1998 26.5 9.5 1.08 0.0
1997 22.6 10.9 0.00 0.0
1996 24.4 9.3 0.00 0.0
1995 30.6 13.9 0.00 0.0
1994 27.4 15.3 0.86 0.0
1993 15.0 10.4 2.49 0.0
1992 15.0 12.2 0.68 0.0
1991 26.2 15.0 0.10 0.0
1990 24.8 7.5 0.00 0.0
1989 21.4 13.4 0.04 0.0
1988 26.1 17.3 0.00 0.0
1987 23.5 17.6 0.26 0.0
1986 18.1 11.5 0.78 0.0
1985 23.0 16.7 1.52 0.0
1984 16.9 3.2 0.00 0.0
1983 18.0 11.0 0.00 0.0
1982 24.0 19.0 0.02 0.0
1981 18.5 11.5 0.00 0.0
1980 26.5 16.0 0.12 0.0
1979 23.0 9.5 0.00 0.0
1978 26.0 17.0 1.74 0.0
1977 26.0 11.5 0.20 0.0
1976 22.8 12.8 1.32 0.0
1975 26.7 16.7 0.28 0.0
1974 22.8 9.4 0.48 0.0
1973 21.7 12.8 0.08 0.0
1972 16.1 10.6 0.58 0.0
1971 17.8 6.7 0.00 0.0
1970 25.0 15.0 0.71 0.0
1969 19.4 6.7 0.00 0.0
1968 16.7 11.7 0.08 0.0
1967 22.2 6.1 0.00 0.0
1966 13.9 5.6 0.00 0.0
1965 17.8 6.1 0.00 0.0
1964 19.4 2.2 0.00 0.0
1963 26.1 8.3 0.00 0.0
1962 27.2 18.9 0.30 0.0
1961 21.1 0.6 0.00 0.0
1960 17.8 13.3 3.84 0.0
1959 21.1 8.3 0.23 0.0
1958 20.0 8.9 0.53 0.0
1957 26.1 11.1 0.00 0.0
1956 26.7 17.2 0.15 0.0
1955 19.4 10.6 0.00 0.0
1954 24.4 7.2 0.36 0.0
1953 20.6 2.8 0.00 0.0
1952 n/a n/a 0.13 0.0
1951 28.3 10.6 0.00 0.0
1950 26.1 10.0 3.02 0.0
1949 21.1 2.8 0.00 0.0
1948 24.4 5.0 0.00 0.0
1947 18.9 1.7 0.00 0.0
1946 7.2 4.4 0.58 0.0
1945 9.4 1.1 0.00 0.0
1944 32.2 15.0 0.64 0.0
1943 23.9 10.6 0.00 0.0
1942 18.9 8.3 0.00 0.0
1941 23.3 3.3 0.00 0.0
1940 20.0 10.6 0.00 0.0
1939 15.6 11.1 0.00 0.0
1938 25.6 10.0 0.00 0.0
1937 31.7 16.1 0.00 0.0
1936 22.2 4.4 0.20 0.0
1935 21.7 12.2 0.08 0.0
1934 22.8 12.2 0.00 0.0
1933 17.2 11.1 0.00 0.0
1932 22.8 12.8 0.28 0.0
1931 17.2 13.3 0.97 0.0
1930 14.4 1.1 0.00 0.0
1929 26.7 17.8 0.00 0.0
1928 17.8 7.8 0.00 0.0
1927 18.9 11.1 1.27 0.0
1926 25.6 14.4 0.08 0.0
1925 23.9 7.2 0.20 0.0
1924 17.8 2.8 0.00 0.0
1923 n/a n/a 0.00 0.0
1922 29.4 10.0 0.00 0.0
1921 31.1 17.2 4.75 0.0
1920 30.0 9.4 0.00 0.0
1919 24.4 10.6 0.00 0.0
1918 26.1 15.0 0.20 0.0
1917 27.2 6.1 0.00 0.0
1916 18.9 6.7 0.00 0.0
1915 26.1 7.2 0.00 0.0
1914 28.9 11.1 0.00 0.0
1913 25.0 12.2 0.00 0.0
1912 19.4 7.2 0.20 0.0
1911 20.6 10.0 2.03 0.0
1910 13.9 8.9 0.28 0.0
1909 23.3 8.9 0.00 0.0
1908 21.1 12.2 0.91 0.0
1907 18.9 7.2 0.41 0.0
1906 23.3 9.4 0.00 0.0
1905 20.0 3.9 0.00 0.0
1904 17.8 5.6 0.00 0.0
1903 20.0 3.3 0.00 0.0
1902 22.2 2.2 0.00 0.0
1901 18.9 11.1 0.41 0.0
1900 28.3 13.3 0.05 0.0
1899 n/a n/a n/a n/a
1898 28.3 9.4 0.00 0.0
1897 15.0 7.8 1.02 0.0
1896 17.2 5.6 0.00 0.0
1895 22.8 16.1 1.73 0.0
1894 12.8 7.2 2.11 0.0
1893 23.9 7.8 0.00 0.0
1892 29.4 10.6 0.00 0.0
1891 27.2 12.2 0.00 0.0
1890 25.0 11.1 0.00 0.0
What's the all-time high for Ottawa on 5/31?
For the date of May 31, the highest temperature ever reached in Ottawa history is 32.2 °C which happened in 1944.
Highest Temperatures in Ottawa on May 31
Rank Temperature Year
1 32.2 °C 1944
2 32.1 °C 2013
3 32.0 °C 1999
3 32.0 °C 2023
5 31.7 °C 1937
6 31.1 °C 1921
7 30.6 °C 1995
8 30.5 °C 2011
9 30.4 °C 2006
10 30.0 °C 1920
What's the all-time low for Ottawa on 5/31?
For the date of May 31, the lowest temperature ever reached in Ottawa history is 0.6 °C which happened in 1961.
Lowest Temperatures in Ottawa on May 31
Rank Temperature Year
1 0.6 °C 1961
2 1.1 °C 1930
2 1.1 °C 1945
4 1.7 °C 1947
5 2.2 °C 1902
5 2.2 °C 1964
7 2.8 °C 1924
7 2.8 °C 1949
7 2.8 °C 1953
10 3.2 °C 1984
Lowest High Temperatures in Ottawa on May 31
Rank Temperature Year
1 7.2 °C 1946
2 9.4 °C 1945
3 11.5 °C 2009
4 12.8 °C 1894
5 13.5 °C 2020
6 13.9 °C 1910
6 13.9 °C 1966
8 14.0 °C 2015
9 14.4 °C 1930
10 15.0 °C 2019
10 15.0 °C 1897
10 15.0 °C 1993
10 15.0 °C 1992
What's the most it has ever rained in Ottawa on 5/31?
For the date of May 31, the most precipitation ever recorded in Ottawa history is 4.75 cm which happened in 1921.
All-Time Most Precipitation in Ottawa on May 31
Rank Precipitation Year
1 4.75 cm 1921
2 3.84 cm 1960
3 3.02 cm 1950
4 2.49 cm 1993
5 2.11 cm 1894
6 2.03 cm 1911
7 1.74 cm 1978
8 1.73 cm 1895
9 1.72 cm 2008
10 1.52 cm 1985
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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