Ottawa May 1 Weather Records

Daily averages and all-time records for weather in Ottawa, Ontario for the date of May 1.
May 1 All-Time Records
1889–2024
Highest temperature 29.0 °C 2001
Lowest temperature -5.6 °C 1931
Lowest daily high 2.5 °C 1978
Highest daily low 18.3 °C 1970
Most precipitation 3.63 cm 1908
Most snow none -
May 1 Average Weather
1991–2020 1
Average high 16.2 °C
Average low 5.1 °C
Chance precipitation 42.0%
Chance snow 1.4%
Ottawa May 1 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 11.0 6.5 0.76 0.0
2022 19.5 2.0 0.08 0.0
2021 12.0 -1.0 0.20 0.0
2020 n/a n/a n/a n/a
2019 6.0 3.5 0.90 0.0
2018 20.0 1.5 0.00 0.0
2017 14.0 3.5 3.44 0.0
2016 10.0 7.0 0.30 0.0
2015 20.7 7.6 0.00 0.0
2014 17.9 6.0 0.02 0.0
2013 24.4 7.7 0.00 0.0
2012 10.6 6.3 0.02 0.0
2011 20.4 4.3 0.00 0.0
2010 20.0 7.9 0.10 0.0
2009 21.9 10.2 0.00 0.0
2008 12.6 -2.0 0.00 0.0
2007 15.1 2.0 0.00 0.0
2006 24.5 7.0 0.00 0.0
2005 12.8 5.2 0.22 0.0
2004 24.7 14.9 0.06 0.0
2003 11.9 6.3 2.63 0.0
2002 12.5 3.3 0.21 0.0
2001 29.0 7.5 0.00 0.0
2000 14.1 6.2 0.00 0.0
1999 24.5 4.3 0.00 0.0
1998 25.5 4.8 0.32 0.0
1997 19.8 10.8 0.00 0.0
1996 16.0 3.7 0.38 0.0
1995 16.4 6.0 0.02 0.0
1994 6.5 4.4 0.06 0.0
1993 18.3 7.9 0.00 0.0
1992 10.9 0.6 0.96 0.0
1991 19.7 8.6 1.24 0.0
1990 22.6 11.4 0.00 0.0
1989 18.1 7.8 0.70 0.0
1988 11.8 3.9 0.02 0.0
1987 11.2 3.3 0.00 0.0
1986 19.4 11.0 0.68 0.0
1985 15.7 5.5 0.00 0.0
1984 10.0 3.0 0.03 0.0
1983 17.0 10.0 1.08 0.0
1982 21.0 6.5 0.00 0.0
1981 13.0 2.5 0.00 0.0
1980 22.0 7.5 0.00 0.0
1979 9.5 4.0 0.30 0.0
1978 2.5 -3.0 0.00 0.0
1977 22.0 5.0 1.08 0.0
1976 16.7 4.4 0.69 0.0
1975 17.8 5.6 0.03 0.0
1974 11.1 5.0 0.00 0.0
1973 13.3 3.9 1.12 0.0
1972 20.0 10.0 0.18 0.0
1971 13.9 4.4 0.00 0.0
1970 28.3 18.3 0.10 0.0
1969 15.6 2.2 0.00 0.0
1968 14.4 5.0 0.00 0.0
1967 26.7 8.9 0.00 0.0
1966 12.2 6.1 0.00 0.0
1965 20.0 1.7 0.00 0.0
1964 19.4 5.6 0.00 0.0
1963 8.9 -0.6 0.00 0.0
1962 11.1 6.1 0.66 0.0
1961 12.2 -0.6 0.43 0.0
1960 12.2 8.3 0.00 0.0
1959 11.7 2.8 0.00 0.0
1958 17.8 0.0 0.05 0.0
1957 11.7 6.7 0.00 0.0
1956 13.3 -1.7 0.00 0.0
1955 21.7 6.7 0.00 0.0
1954 21.1 6.7 0.05 0.0
1953 6.7 4.4 0.58 0.0
1952 14.4 2.8 0.00 0.0
1951 20.6 1.1 0.00 0.0
1950 8.3 6.1 0.00 0.0
1949 23.9 3.3 0.00 0.0
1948 10.6 4.4 0.00 0.0
1947 4.4 1.7 0.38 0.0
1946 13.9 2.2 0.00 0.0
1945 14.4 3.3 0.00 0.0
1944 17.8 4.4 0.00 0.0
1943 6.7 -3.9 0.00 0.0
1942 26.1 11.7 0.00 0.0
1941 18.9 3.3 0.00 0.0
1940 22.2 9.4 0.79 0.0
1939 12.2 1.7 0.00 0.0
1938 14.4 6.1 0.00 0.0
1937 23.9 2.2 0.00 0.0
1936 22.2 3.9 0.20 0.0
1935 7.8 -1.1 0.00 0.0
1934 25.6 10.0 0.00 0.0
1933 23.3 6.1 0.10 0.0
1932 19.4 10.0 0.15 0.0
1931 14.4 -5.6 0.00 0.0
1930 26.1 10.0 0.00 0.0
1929 7.8 3.9 0.20 0.0
1928 12.8 4.4 0.43 0.0
1927 12.8 -2.2 0.00 0.0
1926 15.6 1.1 0.00 0.0
1925 14.4 4.4 2.01 0.0
1924 11.7 5.0 1.42 0.0
1923 15.0 3.9 0.00 0.0
1922 20.0 -1.1 0.00 0.0
1921 18.3 10.6 0.10 0.0
1920 9.4 1.1 0.00 0.0
1919 13.9 3.3 0.05 0.0
1918 12.8 3.3 0.00 0.0
1917 13.3 5.6 0.71 0.0
1916 17.8 10.6 0.30 0.0
1915 10.0 3.9 0.71 0.0
1914 12.8 -0.6 0.00 0.0
1913 23.3 2.2 0.00 0.0
1912 15.6 1.7 0.00 0.0
1911 18.3 8.3 0.56 0.0
1910 15.0 2.2 0.00 0.0
1909 3.3 0.0 3.40 0.0
1908 6.7 1.7 3.63 0.0
1907 8.9 -1.7 0.00 0.0
1906 15.6 1.1 0.00 0.0
1905 6.7 -1.1 0.00 0.0
1904 18.9 4.4 0.18 0.0
1903 18.3 -3.9 0.00 0.0
1902 13.9 5.0 0.00 0.0
1901 18.9 3.9 0.00 0.0
1900 11.1 1.7 0.00 0.0
1899 n/a n/a n/a n/a
1898 18.3 6.1 0.00 0.0
1897 18.3 6.7 0.00 0.0
1896 21.1 2.8 0.00 0.0
1895 18.3 1.7 0.00 0.0
1894 28.9 10.0 0.00 0.0
1893 10.0 4.4 0.23 0.0
1892 9.4 -0.6 0.08 0.0
1891 18.3 8.9 0.00 0.0
1890 8.3 -1.7 0.23 0.0
What's the all-time high for Ottawa on 5/1?
For the date of May 1, the highest temperature ever reached in Ottawa history is 29.0 °C which happened in 2001.
Highest Temperatures in Ottawa on May 1
Rank Temperature Year
1 29.0 °C 2001
2 28.9 °C 1894
3 28.3 °C 1970
4 26.7 °C 1967
5 26.1 °C 1930
5 26.1 °C 1942
7 25.6 °C 1934
8 25.5 °C 1998
9 24.7 °C 2004
10 24.5 °C 1999
10 24.5 °C 2006
What's the all-time low for Ottawa on 5/1?
For the date of May 1, the lowest temperature ever reached in Ottawa history is -5.6 °C which happened in 1931.
Lowest Temperatures in Ottawa on May 1
Rank Temperature Year
1 -5.6 °C 1931
2 -3.9 °C 1943
2 -3.9 °C 1903
4 -3.0 °C 1978
5 -2.2 °C 1927
6 -2.0 °C 2008
7 -1.7 °C 1890
7 -1.7 °C 1956
7 -1.7 °C 1907
10 -1.1 °C 1905
10 -1.1 °C 1935
10 -1.1 °C 1922
Lowest High Temperatures in Ottawa on May 1
Rank Temperature Year
1 2.5 °C 1978
2 3.3 °C 1909
3 4.4 °C 1947
4 6.0 °C 2019
5 6.5 °C 1994
6 6.7 °C 1905
6 6.7 °C 1943
6 6.7 °C 1908
6 6.7 °C 1953
10 7.8 °C 1929
10 7.8 °C 1935
What's the most it has ever rained in Ottawa on 5/1?
For the date of May 1, the most precipitation ever recorded in Ottawa history is 3.63 cm which happened in 1908.
All-Time Most Precipitation in Ottawa on May 1
Rank Precipitation Year
1 3.63 cm 1908
2 3.44 cm 2017
3 3.40 cm 1909
4 2.63 cm 2003
5 2.01 cm 1925
6 1.42 cm 1924
7 1.24 cm 1991
8 1.12 cm 1973
9 1.08 cm 1983
9 1.08 cm 1977
Weather Station Details
Years Station Coordinates
1889–2024 Ottawa CDA location