Ottawa May 15 Weather Records

Daily averages and all-time records for weather in Ottawa, Ontario for the date of May 15.
May 15 All-Time Records
1889–2024
Highest temperature 30.6 °C 1907
Lowest temperature -1.1 °C 1935
Lowest daily high 6.7 °C 1959
Highest daily low 17.6 °C 2014
Most precipitation 2.90 cm 2022
Most snow none -
May 15 Average Weather
1991–2020 1
Average high 19.4 °C
Average low 8.1 °C
Chance precipitation 42.1%
Chance snow 0.2%
Ottawa May 15 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 24.0 7.0 0.00 0.0
2022 26.0 17.0 2.90 0.0
2021 24.0 10.0 0.00 0.0
2020 n/a n/a n/a n/a
2019 13.5 3.0 0.04 0.0
2018 20.0 13.0 0.00 0.0
2017 19.5 8.0 0.00 0.0
2016 9.5 5.0 0.00 0.0
2015 20.7 4.2 0.00 0.0
2014 28.8 17.6 0.45 0.0
2013 16.9 1.7 0.14 0.0
2012 24.0 11.9 0.00 0.0
2011 13.9 7.5 0.19 0.0
2010 17.1 9.8 0.00 0.0
2009 19.1 7.4 0.00 0.0
2008 18.9 11.8 0.00 0.0
2007 17.4 10.0 1.50 0.0
2006 18.8 11.2 0.13 0.0
2005 19.5 7.0 0.00 0.0
2004 20.5 16.6 0.00 0.0
2003 19.9 9.9 0.00 0.0
2002 16.1 3.0 0.48 0.0
2001 21.1 5.0 0.00 0.0
2000 14.7 4.8 0.00 0.0
1999 24.8 6.0 0.00 0.0
1998 29.5 12.9 0.00 0.0
1997 15.2 7.6 0.32 0.0
1996 19.4 2.8 0.00 0.0
1995 16.3 11.3 0.00 0.0
1994 16.6 4.4 1.26 0.0
1993 20.5 9.0 0.33 0.0
1992 19.7 2.8 0.00 0.0
1991 24.8 4.0 0.00 0.0
1990 19.5 8.3 0.06 0.0
1989 21.7 5.7 0.00 0.0
1988 19.6 3.3 0.51 0.0
1987 11.1 6.0 0.00 0.0
1986 21.3 12.3 0.08 0.0
1985 22.4 6.2 0.10 0.0
1984 11.4 4.0 0.06 0.0
1983 16.0 14.0 0.00 0.0
1982 21.0 7.0 0.00 0.0
1981 16.5 9.5 2.72 0.0
1980 15.0 5.5 0.18 0.0
1979 19.5 8.0 0.26 0.0
1978 15.0 10.0 0.26 0.0
1977 21.0 4.0 0.00 0.0
1976 22.2 6.7 0.00 0.0
1975 23.9 11.1 0.81 0.0
1974 21.7 14.4 0.48 0.0
1973 12.8 2.2 0.00 0.0
1972 20.0 12.2 0.00 0.0
1971 21.1 0.6 0.00 0.0
1970 15.0 6.7 0.25 0.0
1969 16.7 0.0 0.00 0.0
1968 23.3 8.9 0.00 0.0
1967 10.6 7.2 0.08 0.0
1966 21.1 6.7 0.00 0.0
1965 25.0 6.1 0.00 0.0
1964 20.0 0.6 0.38 0.0
1963 18.3 7.8 0.00 0.0
1962 20.0 11.1 0.00 0.0
1961 29.4 13.3 1.22 0.0
1960 17.8 10.0 0.15 0.0
1959 6.7 3.3 0.00 0.0
1958 13.3 5.0 0.05 0.0
1957 11.1 5.6 0.43 0.0
1956 15.6 0.6 0.56 0.0
1955 20.6 3.9 0.00 0.0
1954 24.4 7.2 0.00 0.0
1953 16.1 8.9 0.15 0.0
1952 11.1 9.4 0.20 0.0
1951 27.8 7.2 0.00 0.0
1950 18.3 7.2 0.00 0.0
1949 15.0 2.8 0.00 0.0
1948 22.2 7.2 0.13 0.0
1947 17.8 1.1 0.61 0.0
1946 21.1 11.7 0.20 0.0
1945 11.1 5.0 0.71 0.0
1944 21.1 10.6 0.00 0.0
1943 18.3 1.7 0.10 0.0
1942 18.9 16.7 0.38 0.0
1941 24.4 1.7 0.00 0.0
1940 21.1 6.1 0.64 0.0
1939 18.3 2.8 0.00 0.0
1938 13.3 7.8 0.18 0.0
1937 10.0 5.0 0.25 0.0
1936 8.9 1.1 0.43 0.0
1935 12.2 -1.1 0.00 0.0
1934 13.9 2.8 0.00 0.0
1933 13.9 3.3 0.00 0.0
1932 25.0 8.9 0.00 0.0
1931 18.3 9.4 0.00 0.0
1930 8.9 7.8 0.86 0.0
1929 19.4 9.4 2.11 0.0
1928 15.6 0.6 0.00 0.0
1927 16.1 9.4 2.62 0.0
1926 18.9 1.1 0.00 0.0
1925 17.8 3.9 0.36 0.0
1924 14.4 8.3 2.31 0.0
1923 13.9 5.6 0.89 0.0
1922 24.4 8.9 0.00 0.0
1921 16.1 7.8 0.00 0.0
1920 17.2 2.2 0.00 0.0
1919 20.0 5.6 0.00 0.0
1918 17.2 3.3 0.00 0.0
1917 11.1 -1.1 0.00 0.0
1916 13.3 7.8 0.03 0.0
1915 15.0 1.7 0.00 0.0
1914 16.1 0.6 0.00 0.0
1913 11.7 -1.1 0.00 0.0
1912 17.2 1.7 0.00 0.0
1911 22.2 9.4 0.05 0.0
1910 16.7 2.2 0.00 0.0
1909 17.2 6.1 0.00 0.0
1908 20.0 5.6 0.00 0.0
1907 30.6 7.2 0.00 0.0
1906 22.2 1.1 0.00 0.0
1905 20.6 12.2 0.99 0.0
1904 13.3 7.2 2.24 0.0
1903 24.4 6.7 0.00 0.0
1902 15.6 1.1 0.00 0.0
1901 20.0 2.2 0.00 0.0
1900 23.9 11.7 0.46 0.0
1899 n/a n/a n/a n/a
1898 23.9 6.7 0.00 0.0
1897 15.6 6.1 0.03 0.0
1896 23.9 7.8 0.00 0.0
1895 11.7 4.4 0.08 0.0
1894 18.3 2.2 0.00 0.0
1893 26.1 9.4 0.00 0.0
1892 18.3 10.0 0.00 0.0
1891 23.9 2.2 0.00 0.0
1890 20.6 2.2 0.10 0.0
What's the all-time high for Ottawa on 5/15?
For the date of May 15, the highest temperature ever reached in Ottawa history is 30.6 °C which happened in 1907.
Highest Temperatures in Ottawa on May 15
Rank Temperature Year
1 30.6 °C 1907
2 29.5 °C 1998
3 29.4 °C 1961
4 28.8 °C 2014
5 27.8 °C 1951
6 26.1 °C 1893
7 26.0 °C 2022
8 25.0 °C 1932
8 25.0 °C 1965
10 24.8 °C 1999
10 24.8 °C 1991
What's the all-time low for Ottawa on 5/15?
For the date of May 15, the lowest temperature ever reached in Ottawa history is -1.1 °C which has happened 3 times, most recently in 1935.
Lowest Temperatures in Ottawa on May 15
Rank Temperature Year
1 -1.1 °C 1935
1 -1.1 °C 1917
1 -1.1 °C 1913
4 0.0 °C 1969
5 0.6 °C 1971
5 0.6 °C 1928
5 0.6 °C 1914
5 0.6 °C 1956
5 0.6 °C 1964
10 1.1 °C 1906
10 1.1 °C 1936
10 1.1 °C 1947
10 1.1 °C 1926
10 1.1 °C 1902
Lowest High Temperatures in Ottawa on May 15
Rank Temperature Year
1 6.7 °C 1959
2 8.9 °C 1930
2 8.9 °C 1936
4 9.5 °C 2016
5 10.0 °C 1937
6 10.6 °C 1967
7 11.1 °C 1957
7 11.1 °C 1952
7 11.1 °C 1917
7 11.1 °C 1987
7 11.1 °C 1945
What's the most it has ever rained in Ottawa on 5/15?
For the date of May 15, the most precipitation ever recorded in Ottawa history is 2.90 cm which happened in 2022.
All-Time Most Precipitation in Ottawa on May 15
Rank Precipitation Year
1 2.90 cm 2022
2 2.72 cm 1981
3 2.62 cm 1927
4 2.31 cm 1924
5 2.24 cm 1904
6 2.11 cm 1929
7 1.50 cm 2007
8 1.26 cm 1994
9 1.22 cm 1961
10 0.99 cm 1905
Weather Station Details
Years Station Coordinates
1889–2024 Ottawa CDA location