Ottawa September 4 Weather Records

Daily averages and all-time records for weather in Ottawa, Ontario for the date of September 4.
September 4 All-Time Records
1889–2024
Highest temperature 35.0 °C 1953
Lowest temperature 2.2 °C 1974
Lowest daily high 14.4 °C 1950
Highest daily low 21.7 °C 1898
Most precipitation 2.36 cm 2017
Most snow none -
September 4 Average Weather
1991–2020 1
Average high 23.4 °C
Average low 12.5 °C
Chance precipitation 37.4%
Chance snow 0%
Ottawa September 4 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 30.5 18.0 0.00 0.0
2022 20.0 13.0 0.00 0.0
2021 25.0 11.0 0.16 0.0
2020 21.0 12.0 0.04 0.0
2019 23.0 14.0 0.00 0.0
2018 26.0 16.5 0.00 0.0
2017 22.5 10.0 2.36 0.0
2016 26.5 8.0 0.00 0.0
2015 26.0 13.4 0.00 0.0
2014 27.5 13.6 0.12 0.0
2013 19.7 12.3 0.00 0.0
2012 26.0 19.9 1.38 0.0
2011 27.5 19.0 0.63 0.0
2010 20.3 14.7 0.00 0.0
2009 26.0 12.3 0.00 0.0
2008 25.5 18.4 0.00 0.0
2007 21.7 12.5 0.00 0.0
2006 19.2 14.0 0.04 0.0
2005 20.8 11.8 0.00 0.0
2004 24.3 16.8 0.00 0.0
2003 23.1 16.9 0.00 0.0
2002 24.5 13.6 0.00 0.0
2001 22.5 17.0 0.12 0.0
2000 17.2 11.0 0.00 0.0
1999 33.3 16.3 0.00 0.0
1998 21.8 9.0 0.00 0.0
1997 19.8 5.1 0.00 0.0
1996 29.1 14.7 0.00 0.0
1995 24.9 10.6 0.00 0.0
1994 18.9 6.3 0.00 0.0
1993 21.0 12.3 0.00 0.0
1992 21.5 12.2 0.00 0.0
1991 22.7 16.0 0.00 0.0
1990 23.2 7.8 0.14 0.0
1989 22.8 6.8 0.00 0.0
1988 19.8 15.4 0.93 0.0
1987 22.0 5.4 0.00 0.0
1986 21.1 12.9 0.38 0.0
1985 28.4 15.1 0.00 0.0
1984 18.9 7.5 0.00 0.0
1983 32.0 16.5 0.00 0.0
1982 20.0 11.0 0.00 0.0
1981 22.0 17.0 0.92 0.0
1980 24.5 11.0 0.00 0.0
1979 21.0 9.5 0.00 0.0
1978 23.0 9.0 0.00 0.0
1977 23.0 8.0 0.10 0.0
1976 22.8 13.9 0.00 0.0
1975 22.2 8.9 0.00 0.0
1974 20.0 2.2 0.00 0.0
1973 29.4 20.0 0.00 0.0
1972 20.0 12.2 0.00 0.0
1971 27.8 19.4 0.00 0.0
1970 26.1 15.0 0.33 0.0
1969 26.1 10.6 0.00 0.0
1968 23.3 13.9 0.00 0.0
1967 25.6 15.0 0.00 0.0
1966 16.7 11.1 0.81 0.0
1965 25.6 11.7 0.00 0.0
1964 25.6 14.4 0.53 0.0
1963 15.6 8.3 0.00 0.0
1962 24.4 10.0 0.46 0.0
1961 30.6 20.6 0.00 0.0
1960 20.6 12.8 0.00 0.0
1959 26.1 11.7 0.08 0.0
1958 24.4 12.8 0.00 0.0
1957 25.6 16.7 0.25 0.0
1956 26.1 9.4 0.00 0.0
1955 27.8 9.4 0.10 0.0
1954 19.4 10.0 0.64 0.0
1953 35.0 18.9 0.94 0.0
1952 24.4 11.1 0.00 0.0
1951 23.9 10.6 0.00 0.0
1950 14.4 11.7 0.18 0.0
1949 28.3 13.3 0.08 0.0
1948 26.7 12.8 0.00 0.0
1947 25.6 11.1 0.00 0.0
1946 20.0 4.4 0.00 0.0
1945 23.9 6.7 0.00 0.0
1944 23.9 10.0 0.13 0.0
1943 21.7 13.3 0.05 0.0
1942 21.7 2.2 0.13 0.0
1941 23.9 7.8 0.00 0.0
1940 21.7 11.1 0.00 0.0
1939 30.0 14.4 0.36 0.0
1938 22.8 12.8 0.00 0.0
1937 19.4 13.9 0.00 0.0
1936 21.1 6.7 0.00 0.0
1935 17.8 10.6 2.18 0.0
1934 27.2 10.6 0.28 0.0
1933 26.7 15.6 0.00 0.0
1932 26.7 16.7 1.40 0.0
1931 21.1 13.9 0.00 0.0
1930 20.6 8.3 0.00 0.0
1929 27.8 16.7 0.00 0.0
1928 17.2 11.1 0.46 0.0
1927 21.7 13.3 0.23 0.0
1926 20.0 7.2 0.00 0.0
1925 26.1 12.8 0.00 0.0
1924 22.8 2.2 0.00 0.0
1923 21.1 10.0 0.00 0.0
1922 26.1 13.3 0.00 0.0
1921 27.8 10.0 0.00 0.0
1920 25.0 7.2 0.00 0.0
1919 22.2 11.1 0.00 0.0
1918 19.4 12.8 0.10 0.0
1917 17.8 7.8 0.13 0.0
1916 17.8 10.0 1.02 0.0
1915 28.3 14.4 0.00 0.0
1914 21.1 11.7 0.08 0.0
1913 18.9 7.8 0.00 0.0
1912 22.2 12.8 0.00 0.0
1911 21.1 8.3 0.00 0.0
1910 21.7 11.1 0.00 0.0
1909 15.0 11.1 1.50 0.0
1908 26.7 6.7 0.00 0.0
1907 19.4 13.3 0.13 0.0
1906 17.8 5.0 0.00 0.0
1905 23.3 12.2 0.38 0.0
1904 18.9 12.2 0.05 0.0
1903 23.9 16.1 0.00 0.0
1902 22.2 12.8 0.56 0.0
1901 30.6 15.0 0.00 0.0
1900 25.6 14.4 0.00 0.0
1899 21.1 9.4 0.00 0.0
1898 31.7 21.7 0.00 0.0
1897 23.9 5.0 0.00 0.0
1896 15.0 5.0 0.00 0.0
1895 28.9 10.0 0.00 0.0
1894 27.8 9.4 0.00 0.0
1893 17.2 3.9 0.00 0.0
1892 28.3 9.4 0.00 0.0
1891 21.1 12.8 0.38 0.0
1890 27.2 10.0 0.00 0.0
What's the all-time high for Ottawa on 9/4?
For the date of Sep 4, the highest temperature ever reached in Ottawa history is 35.0 °C which happened in 1953.
Highest Temperatures in Ottawa on September 4
Rank Temperature Year
1 35.0 °C 1953
2 33.3 °C 1999
3 32.0 °C 1983
4 31.7 °C 1898
5 30.6 °C 1961
5 30.6 °C 1901
7 30.5 °C 2023
8 30.0 °C 1939
9 29.4 °C 1973
10 29.1 °C 1996
What's the all-time low for Ottawa on 9/4?
For the date of Sep 4, the lowest temperature ever reached in Ottawa history is 2.2 °C which has happened 3 times, most recently in 1974.
Lowest Temperatures in Ottawa on September 4
Rank Temperature Year
1 2.2 °C 1924
1 2.2 °C 1942
1 2.2 °C 1974
4 3.9 °C 1893
5 4.4 °C 1946
6 5.0 °C 1897
6 5.0 °C 1896
6 5.0 °C 1906
9 5.1 °C 1997
10 5.4 °C 1987
Lowest High Temperatures in Ottawa on September 4
Rank Temperature Year
1 14.4 °C 1950
2 15.0 °C 1896
2 15.0 °C 1909
4 15.6 °C 1963
5 16.7 °C 1966
6 17.2 °C 1893
6 17.2 °C 1928
6 17.2 °C 2000
9 17.8 °C 1935
9 17.8 °C 1916
9 17.8 °C 1906
9 17.8 °C 1917
What's the most it has ever rained in Ottawa on 9/4?
For the date of Sep 4, the most precipitation ever recorded in Ottawa history is 2.36 cm which happened in 2017.
All-Time Most Precipitation in Ottawa on September 4
Rank Precipitation Year
1 2.36 cm 2017
2 2.18 cm 1935
3 1.50 cm 1909
4 1.40 cm 1932
5 1.38 cm 2012
6 1.02 cm 1916
7 0.94 cm 1953
8 0.93 cm 1988
9 0.92 cm 1981
10 0.81 cm 1966
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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