Ottawa August 31 Weather Records

Daily averages and all-time records for weather in Ottawa, Ontario for the date of August 31.
August 31 All-Time Records
1889–2024
Highest temperature 32.8 °C 1969
Lowest temperature 1.7 °C 1934
Lowest daily high 13.3 °C 1954
Highest daily low 21.5 °C 2010
Most precipitation 3.86 cm 1932
Most snow none -
August 31 Average Weather
1991–2020 1
Average high 24.0 °C
Average low 13.1 °C
Chance precipitation 38.1%
Chance snow 0%
Ottawa August 31 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 22.5 7.5 0.00 0.0
2022 23.0 15.5 2.10 0.0
2021 25.0 17.0 0.00 0.0
2020 21.5 8.0 0.00 0.0
2019 21.0 12.0 0.00 0.0
2018 23.0 10.5 0.00 0.0
2017 15.0 12.5 0.00 0.0
2016 27.0 17.5 0.00 0.0
2015 25.3 16.9 0.00 0.0
2014 27.1 20.5 0.11 0.0
2013 24.5 17.0 0.00 0.0
2012 27.6 18.4 0.24 0.0
2011 24.6 12.1 0.00 0.0
2010 32.4 21.5 0.00 0.0
2009 19.4 9.4 0.00 0.0
2008 26.1 11.9 0.00 0.0
2007 24.1 11.1 0.00 0.0
2006 22.6 9.6 0.00 0.0
2005 23.5 19.2 1.42 0.0
2004 24.0 16.0 0.00 0.0
2003 23.0 8.0 0.02 0.0
2002 26.3 14.6 0.00 0.0
2001 25.3 18.2 0.14 0.0
2000 30.0 17.2 0.00 0.0
1999 26.4 7.8 0.00 0.0
1998 21.7 11.2 0.00 0.0
1997 23.8 12.2 0.00 0.0
1996 27.3 11.4 0.00 0.0
1995 21.2 13.7 0.13 0.0
1994 14.0 11.9 0.34 0.0
1993 29.9 16.1 0.31 0.0
1992 18.4 14.4 0.00 0.0
1991 19.1 15.5 0.00 0.0
1990 27.4 11.9 0.00 0.0
1989 24.3 10.5 0.04 0.0
1988 21.6 12.1 0.00 0.0
1987 20.0 14.7 1.26 0.0
1986 23.1 9.3 0.00 0.0
1985 20.1 7.5 0.00 0.0
1984 23.3 12.0 0.00 0.0
1983 26.0 14.5 0.00 0.0
1982 19.0 12.5 0.00 0.0
1981 24.0 18.0 0.30 0.0
1980 24.5 19.5 1.22 0.0
1979 21.0 11.5 0.00 0.0
1978 21.0 13.0 0.00 0.0
1977 26.0 12.0 0.00 0.0
1976 19.4 2.8 1.27 0.0
1975 22.2 10.0 0.00 0.0
1974 23.3 14.4 0.25 0.0
1973 29.4 20.0 0.00 0.0
1972 28.9 13.9 0.00 0.0
1971 20.0 8.3 0.00 0.0
1970 17.2 12.2 0.00 0.0
1969 32.8 18.3 0.00 0.0
1968 25.0 12.8 0.00 0.0
1967 16.7 8.9 0.00 0.0
1966 25.0 13.9 0.00 0.0
1965 15.0 3.3 0.86 0.0
1964 27.8 20.0 0.00 0.0
1963 19.4 12.2 0.00 0.0
1962 31.7 16.7 0.00 0.0
1961 27.2 18.9 0.00 0.0
1960 28.9 11.1 0.00 0.0
1959 28.3 16.1 0.10 0.0
1958 28.9 19.4 1.12 0.0
1957 26.1 10.0 0.00 0.0
1956 18.3 12.8 0.43 0.0
1955 26.7 16.7 0.00 0.0
1954 13.3 10.0 3.73 0.0
1953 29.4 20.0 0.00 0.0
1952 25.0 12.2 0.66 0.0
1951 14.4 12.2 1.45 0.0
1950 21.7 12.2 0.05 0.0
1949 24.4 14.4 0.89 0.0
1948 17.8 11.7 0.00 0.0
1947 21.7 13.3 0.00 0.0
1946 21.1 6.1 0.00 0.0
1945 21.7 15.6 1.52 0.0
1944 26.7 8.9 0.38 0.0
1943 26.1 7.8 0.58 0.0
1942 28.3 11.7 0.00 0.0
1941 21.7 17.2 1.60 0.0
1940 26.1 19.4 0.38 0.0
1939 25.0 12.2 0.18 0.0
1938 22.8 7.2 2.18 0.0
1937 31.7 15.6 0.00 0.0
1936 16.7 11.7 0.05 0.0
1935 20.0 3.3 0.05 0.0
1934 23.3 1.7 0.00 0.0
1933 23.3 10.0 0.00 0.0
1932 26.1 16.1 3.86 0.0
1931 18.9 11.1 0.00 0.0
1930 25.6 10.6 0.00 0.0
1929 28.9 8.3 0.00 0.0
1928 18.3 9.4 0.00 0.0
1927 20.0 15.6 0.00 0.0
1926 20.6 7.8 0.00 0.0
1925 30.0 17.8 0.00 0.0
1924 31.1 17.2 0.00 0.0
1923 27.8 12.2 0.15 0.0
1922 25.6 8.3 0.00 0.0
1921 23.3 11.7 0.00 0.0
1920 21.7 15.0 0.13 0.0
1919 24.4 11.7 0.10 0.0
1918 21.1 13.9 1.02 0.0
1917 23.3 7.8 0.00 0.0
1916 26.7 10.6 0.00 0.0
1915 16.1 4.4 0.00 0.0
1914 24.4 14.4 0.25 0.0
1913 25.0 10.0 0.00 0.0
1912 18.3 5.6 0.03 0.0
1911 22.2 7.2 0.00 0.0
1910 24.4 13.9 0.10 0.0
1909 17.2 6.1 1.35 0.0
1908 32.2 12.2 0.00 0.0
1907 17.8 7.8 0.00 0.0
1906 21.1 9.4 0.00 0.0
1905 23.3 12.8 0.05 0.0
1904 20.6 7.2 0.00 0.0
1903 15.6 10.0 0.58 0.0
1902 31.1 13.9 0.00 0.0
1901 22.2 14.4 0.30 0.0
1900 26.1 15.6 0.00 0.0
1899 32.2 16.1 0.00 0.0
1898 25.6 17.8 0.10 0.0
1897 21.7 7.2 0.00 0.0
1896 17.2 6.7 0.13 0.0
1895 24.4 11.7 0.08 0.0
1894 22.2 10.6 0.00 0.0
1893 19.4 11.7 0.03 0.0
1892 20.6 13.3 0.56 0.0
1891 18.9 12.8 0.00 0.0
1890 18.9 10.0 0.30 0.0
What's the all-time high for Ottawa on 8/31?
For the date of Aug 31, the highest temperature ever reached in Ottawa history is 32.8 °C which happened in 1969.
Highest Temperatures in Ottawa on August 31
Rank Temperature Year
1 32.8 °C 1969
2 32.4 °C 2010
3 32.2 °C 1908
3 32.2 °C 1899
5 31.7 °C 1937
5 31.7 °C 1962
7 31.1 °C 1902
7 31.1 °C 1924
9 30.0 °C 1925
9 30.0 °C 2000
What's the all-time low for Ottawa on 8/31?
For the date of Aug 31, the lowest temperature ever reached in Ottawa history is 1.7 °C which happened in 1934.
Lowest Temperatures in Ottawa on August 31
Rank Temperature Year
1 1.7 °C 1934
2 2.8 °C 1976
3 3.3 °C 1965
3 3.3 °C 1935
5 4.4 °C 1915
6 5.6 °C 1912
7 6.1 °C 1909
7 6.1 °C 1946
9 6.7 °C 1896
10 7.2 °C 1904
10 7.2 °C 1911
10 7.2 °C 1938
10 7.2 °C 1897
Lowest High Temperatures in Ottawa on August 31
Rank Temperature Year
1 13.3 °C 1954
2 14.0 °C 1994
3 14.4 °C 1951
4 15.0 °C 1965
4 15.0 °C 2017
6 15.6 °C 1903
7 16.1 °C 1915
8 16.7 °C 1967
8 16.7 °C 1936
10 17.2 °C 1896
10 17.2 °C 1970
10 17.2 °C 1909
What's the most it has ever rained in Ottawa on 8/31?
For the date of Aug 31, the most precipitation ever recorded in Ottawa history is 3.86 cm which happened in 1932.
All-Time Most Precipitation in Ottawa on August 31
Rank Precipitation Year
1 3.86 cm 1932
2 3.73 cm 1954
3 2.18 cm 1938
4 2.10 cm 2022
5 1.60 cm 1941
6 1.52 cm 1945
7 1.45 cm 1951
8 1.42 cm 2005
9 1.35 cm 1909
10 1.27 cm 1976
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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