Ottawa July 31 Weather Records

Daily averages and all-time records for weather in Ottawa, Ontario for the date of July 31.
July 31 All-Time Records
1889–2024
Highest temperature 35.0 °C 1917
Lowest temperature 5.6 °C 1891
Lowest daily high 14.4 °C 1895
Highest daily low 23.3 °C 1916
Most precipitation 3.71 cm 2006
Most snow none -
July 31 Average Weather
1991–2020 1
Average high 26.7 °C
Average low 15.8 °C
Chance precipitation 37.2%
Chance snow 0%
Ottawa July 31 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 22.0 13.0 0.00 0.0
2022 28.5 12.0 0.00 0.0
2021 24.0 12.0 0.40 0.0
2020 29.0 15.5 0.00 0.0
2019 28.0 18.0 0.00 0.0
2018 28.5 17.5 0.00 0.0
2017 27.0 15.0 0.00 0.0
2016 29.0 13.5 0.00 0.0
2015 27.7 19.1 0.12 0.0
2014 22.7 11.8 0.37 0.0
2013 26.2 12.1 0.12 0.0
2012 33.4 14.5 0.39 0.0
2011 30.0 13.0 0.00 0.0
2010 24.5 6.5 0.00 0.0
2009 26.5 17.0 0.00 0.0
2008 26.9 16.1 0.02 0.0
2007 29.7 18.2 0.00 0.0
2006 31.0 17.0 3.71 0.0
2005 25.4 11.0 0.04 0.0
2004 24.9 19.8 1.04 0.0
2003 28.9 13.6 0.00 0.0
2002 31.3 20.7 0.00 0.0
2001 30.3 14.3 0.00 0.0
2000 25.3 18.9 0.00 0.0
1999 29.3 20.3 0.11 0.0
1998 23.9 12.2 0.00 0.0
1997 31.5 15.3 0.00 0.0
1996 24.1 16.7 2.78 0.0
1995 30.9 14.4 0.00 0.0
1994 27.1 13.7 0.04 0.0
1993 28.3 16.6 0.00 0.0
1992 18.1 11.6 2.72 0.0
1991 27.8 16.2 0.06 0.0
1990 22.8 13.6 0.00 0.0
1989 28.0 14.0 0.00 0.0
1988 27.7 19.9 0.00 0.0
1987 23.8 9.5 0.00 0.0
1986 18.1 14.9 0.04 0.0
1985 20.6 13.0 0.00 0.0
1984 29.3 15.0 0.10 0.0
1983 23.0 15.5 1.74 0.0
1982 22.0 17.0 0.14 0.0
1981 28.5 12.0 0.00 0.0
1980 29.0 15.0 0.00 0.0
1979 28.5 20.5 0.62 0.0
1978 24.5 8.5 0.14 0.0
1977 27.0 9.5 0.40 0.0
1976 21.1 15.6 0.13 0.0
1975 33.3 19.4 0.00 0.0
1974 23.3 12.8 0.74 0.0
1973 28.9 17.8 1.12 0.0
1972 27.2 13.3 0.18 0.0
1971 20.6 14.4 1.07 0.0
1970 26.7 22.2 0.23 0.0
1969 28.9 15.6 0.00 0.0
1968 28.9 11.1 2.46 0.0
1967 23.9 18.3 0.13 0.0
1966 28.9 9.4 0.00 0.0
1965 25.0 10.0 0.00 0.0
1964 22.2 9.4 0.00 0.0
1963 26.1 10.6 0.00 0.0
1962 26.1 17.2 1.09 0.0
1961 23.3 16.1 0.00 0.0
1960 23.3 13.9 0.00 0.0
1959 32.2 21.7 0.00 0.0
1958 25.0 14.4 0.00 0.0
1957 26.7 17.2 0.00 0.0
1956 23.9 8.3 0.00 0.0
1955 34.4 16.7 0.00 0.0
1954 18.9 16.7 0.56 0.0
1953 23.3 17.2 0.00 0.0
1952 22.2 12.2 0.00 0.0
1951 25.6 17.2 0.20 0.0
1950 22.8 16.1 0.18 0.0
1949 24.4 15.6 0.00 0.0
1948 26.1 17.2 0.00 0.0
1947 22.2 20.6 0.00 0.0
1946 26.1 15.6 0.00 0.0
1945 30.0 12.8 0.00 0.0
1944 27.8 15.0 0.00 0.0
1943 27.2 14.4 0.00 0.0
1942 20.6 12.2 1.47 0.0
1941 32.2 14.4 0.23 0.0
1940 23.3 16.1 0.00 0.0
1939 28.9 20.0 2.84 0.0
1938 30.6 15.0 0.00 0.0
1937 24.4 13.9 0.03 0.0
1936 26.1 11.1 0.00 0.0
1935 30.0 18.3 0.00 0.0
1934 25.6 16.1 0.00 0.0
1933 27.8 12.8 0.00 0.0
1932 21.1 12.2 0.00 0.0
1931 23.9 11.1 0.00 0.0
1930 24.4 10.6 0.00 0.0
1929 27.2 8.9 0.00 0.0
1928 23.9 9.4 0.00 0.0
1927 25.0 13.3 0.00 0.0
1926 28.3 17.8 0.00 0.0
1925 22.2 6.7 0.00 0.0
1924 20.0 12.8 0.00 0.0
1923 25.6 17.8 0.00 0.0
1922 31.1 16.7 0.00 0.0
1921 26.7 16.1 0.41 0.0
1920 23.3 15.0 0.13 0.0
1919 30.0 11.7 0.00 0.0
1918 24.4 8.3 0.00 0.0
1917 35.0 22.2 0.00 0.0
1916 30.6 23.3 0.00 0.0
1915 33.3 18.3 0.00 0.0
1914 27.8 10.6 0.15 0.0
1913 31.1 13.9 0.00 0.0
1912 18.9 7.8 0.00 0.0
1911 34.4 15.6 0.00 0.0
1910 24.4 12.2 0.00 0.0
1909 23.3 13.3 0.25 0.0
1908 30.0 20.0 0.00 0.0
1907 28.3 12.8 0.00 0.0
1906 26.7 12.8 0.00 0.0
1905 20.0 15.0 1.17 0.0
1904 25.0 17.8 2.90 0.0
1903 21.1 12.2 0.00 0.0
1902 32.8 16.7 0.00 0.0
1901 25.6 15.6 0.15 0.0
1900 27.8 13.9 0.74 0.0
1899 24.4 11.1 0.00 0.0
1898 26.1 16.1 0.00 0.0
1897 20.0 16.1 1.04 0.0
1896 22.8 12.8 0.00 0.0
1895 14.4 9.4 0.23 0.0
1894 21.7 9.4 0.00 0.0
1893 27.8 15.0 1.63 0.0
1892 27.8 11.7 0.00 0.0
1891 20.6 5.6 1.52 0.0
1890 28.9 17.2 0.13 0.0
What's the all-time high for Ottawa on 7/31?
For the date of Jul 31, the highest temperature ever reached in Ottawa history is 35.0 °C which happened in 1917.
Highest Temperatures in Ottawa on July 31
Rank Temperature Year
1 35.0 °C 1917
2 34.4 °C 1911
2 34.4 °C 1955
4 33.4 °C 2012
5 33.3 °C 1915
5 33.3 °C 1975
7 32.8 °C 1902
8 32.2 °C 1941
8 32.2 °C 1959
10 31.5 °C 1997
What's the all-time low for Ottawa on 7/31?
For the date of Jul 31, the lowest temperature ever reached in Ottawa history is 5.6 °C which happened in 1891.
Lowest Temperatures in Ottawa on July 31
Rank Temperature Year
1 5.6 °C 1891
2 6.5 °C 2010
3 6.7 °C 1925
4 7.8 °C 1912
5 8.3 °C 1918
5 8.3 °C 1956
7 8.5 °C 1978
8 8.9 °C 1929
9 9.4 °C 1966
9 9.4 °C 1895
9 9.4 °C 1964
9 9.4 °C 1894
9 9.4 °C 1928
Lowest High Temperatures in Ottawa on July 31
Rank Temperature Year
1 14.4 °C 1895
2 18.1 °C 1986
2 18.1 °C 1992
4 18.9 °C 1954
4 18.9 °C 1912
6 20.0 °C 1897
6 20.0 °C 1905
6 20.0 °C 1924
9 20.6 °C 1971
9 20.6 °C 1985
9 20.6 °C 1942
9 20.6 °C 1891
What's the most it has ever rained in Ottawa on 7/31?
For the date of Jul 31, the most precipitation ever recorded in Ottawa history is 3.71 cm which happened in 2006.
All-Time Most Precipitation in Ottawa on July 31
Rank Precipitation Year
1 3.71 cm 2006
2 2.90 cm 1904
3 2.84 cm 1939
4 2.78 cm 1996
5 2.72 cm 1992
6 2.46 cm 1968
7 1.74 cm 1983
8 1.63 cm 1893
9 1.52 cm 1891
10 1.47 cm 1942
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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