Ottawa September 17 Weather Records

Daily averages and all-time records for weather in Ottawa, Ontario for the date of September 17.
September 17 All-Time Records
1889–2024
Highest temperature 30.0 °C 2018
Lowest temperature 0.0 °C 1973
Lowest daily high 11.7 °C 1959
Highest daily low 18.8 °C 1992
Most precipitation 4.54 cm 2016
Most snow none -
September 17 Average Weather
1991–2020 1
Average high 20.9 °C
Average low 10.3 °C
Chance precipitation 41.1%
Chance snow 0%
Ottawa September 17 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 24.5 12.5 0.00 0.0
2022 20.0 7.0 0.00 0.0
2021 27.0 10.0 0.00 0.0
2020 14.5 9.5 0.00 0.0
2019 22.0 5.0 0.00 0.0
2018 30.0 15.5 0.00 0.0
2017 28.5 15.5 0.00 0.0
2016 22.5 11.0 4.54 0.0
2015 28.2 14.8 0.00 0.0
2014 18.6 5.7 0.80 0.0
2013 17.8 1.7 0.00 0.0
2012 25.8 7.8 0.05 0.0
2011 18.2 1.2 0.00 0.0
2010 17.9 6.5 0.00 0.0
2009 20.0 5.8 0.08 0.0
2008 21.6 8.4 0.07 0.0
2007 20.4 3.2 0.00 0.0
2006 23.8 12.6 0.00 0.0
2005 18.0 15.0 0.67 0.0
2004 17.0 11.4 0.00 0.0
2003 23.9 7.4 0.00 0.0
2002 24.3 9.6 0.00 0.0
2001 24.3 6.8 0.00 0.0
2000 20.9 7.2 0.22 0.0
1999 19.3 12.3 0.00 0.0
1998 22.6 7.4 0.00 0.0
1997 21.5 7.9 0.76 0.0
1996 21.4 12.5 0.00 0.0
1995 19.9 15.3 0.00 0.0
1994 23.2 16.6 0.02 0.0
1993 14.2 7.8 0.45 0.0
1992 22.6 18.8 0.16 0.0
1991 23.8 17.3 0.00 0.0
1990 12.0 4.6 0.00 0.0
1989 17.5 12.8 0.04 0.0
1988 15.5 9.1 0.58 0.0
1987 17.6 9.3 0.00 0.0
1986 14.7 2.0 0.00 0.0
1985 24.0 5.1 0.00 0.0
1984 20.1 3.1 0.00 0.0
1983 20.0 11.0 0.26 0.0
1982 16.0 7.5 1.64 0.0
1981 17.0 6.0 0.22 0.0
1980 20.5 13.0 0.44 0.0
1979 24.5 10.0 0.00 0.0
1978 14.0 3.5 0.00 0.0
1977 17.5 12.0 0.36 0.0
1976 25.0 15.6 3.00 0.0
1975 18.3 12.8 0.00 0.0
1974 19.4 7.8 0.10 0.0
1973 12.8 0.0 1.24 0.0
1972 26.7 16.1 0.00 0.0
1971 15.0 13.3 0.00 0.0
1970 15.6 3.3 0.05 0.0
1969 13.3 8.9 0.00 0.0
1968 26.1 12.8 0.00 0.0
1967 26.7 11.1 0.00 0.0
1966 21.1 7.2 0.00 0.0
1965 18.9 4.4 0.03 0.0
1964 14.4 7.2 0.00 0.0
1963 24.4 5.6 0.00 0.0
1962 16.1 10.0 1.30 0.0
1961 18.9 0.0 0.00 0.0
1960 21.7 4.4 0.56 0.0
1959 11.7 1.1 0.00 0.0
1958 15.6 11.7 1.80 0.0
1957 20.6 8.3 0.00 0.0
1956 15.6 9.4 0.00 0.0
1955 30.0 7.8 0.00 0.0
1954 13.3 10.0 0.00 0.0
1953 13.3 8.9 0.00 0.0
1952 18.9 10.0 0.00 0.0
1951 20.0 7.8 0.33 0.0
1950 12.8 1.1 0.00 0.0
1949 21.7 10.6 0.00 0.0
1948 26.7 5.6 0.00 0.0
1947 22.2 7.2 0.00 0.0
1946 29.4 12.8 0.00 0.0
1945 13.3 0.0 0.00 0.0
1944 26.7 10.0 0.00 0.0
1943 12.2 4.4 0.00 0.0
1942 28.9 13.3 0.00 0.0
1941 23.9 18.3 0.00 0.0
1940 23.9 11.1 0.00 0.0
1939 14.4 10.6 0.00 0.0
1938 14.4 7.2 0.00 0.0
1937 13.3 7.2 0.08 0.0
1936 18.9 9.4 0.00 0.0
1935 16.1 0.6 0.00 0.0
1934 15.6 8.3 0.00 0.0
1933 22.8 12.2 0.20 0.0
1932 16.7 7.2 0.00 0.0
1931 27.8 12.8 2.39 0.0
1930 22.8 14.4 0.89 0.0
1929 17.2 14.4 0.94 0.0
1928 17.8 12.8 0.00 0.0
1927 22.8 11.1 0.10 0.0
1926 16.7 12.8 0.00 0.0
1925 21.7 8.9 0.00 0.0
1924 21.1 10.6 0.00 0.0
1923 17.8 1.7 0.00 0.0
1922 16.7 5.6 0.00 0.0
1921 20.0 7.8 0.25 0.0
1920 16.7 7.8 0.00 0.0
1919 16.1 6.7 0.00 0.0
1918 16.7 8.9 0.64 0.0
1917 25.0 6.1 0.00 0.0
1916 14.4 3.9 0.03 0.0
1915 23.3 15.6 0.23 0.0
1914 27.2 5.6 0.00 0.0
1913 17.2 11.7 0.61 0.0
1912 16.7 3.9 0.00 0.0
1911 22.8 10.6 0.00 0.0
1910 25.0 6.1 0.00 0.0
1909 21.1 11.7 0.00 0.0
1908 24.4 7.2 0.00 0.0
1907 21.1 13.3 0.10 0.0
1906 27.8 7.8 0.00 0.0
1905 18.9 13.9 1.04 0.0
1904 21.1 8.9 0.00 0.0
1903 22.2 11.7 3.56 0.0
1902 25.0 7.8 0.00 0.0
1901 18.9 10.0 0.18 0.0
1900 17.2 11.7 0.18 0.0
1899 28.3 8.9 1.91 0.0
1898 23.9 10.6 0.15 0.0
1897 21.1 8.9 0.00 0.0
1896 15.6 8.3 0.97 0.0
1895 17.8 8.9 0.00 0.0
1894 24.4 7.8 0.00 0.0
1893 11.7 6.1 0.23 0.0
1892 20.0 2.2 0.00 0.0
1891 25.6 10.6 0.00 0.0
1890 21.1 11.7 0.00 0.0
What's the all-time high for Ottawa on 9/17?
For the date of Sep 17, the highest temperature ever reached in Ottawa history is 30.0 °C which has happened 2 times, most recently in 2018.
Highest Temperatures in Ottawa on September 17
Rank Temperature Year
1 30.0 °C 2018
1 30.0 °C 1955
3 29.4 °C 1946
4 28.9 °C 1942
5 28.5 °C 2017
6 28.3 °C 1899
7 28.2 °C 2015
8 27.8 °C 1906
8 27.8 °C 1931
10 27.2 °C 1914
What's the all-time low for Ottawa on 9/17?
For the date of Sep 17, the lowest temperature ever reached in Ottawa history is 0.0 °C which has happened 3 times, most recently in 1973.
Lowest Temperatures in Ottawa on September 17
Rank Temperature Year
1 0.0 °C 1973
1 0.0 °C 1945
1 0.0 °C 1961
4 0.6 °C 1935
5 1.1 °C 1950
5 1.1 °C 1959
7 1.2 °C 2011
8 1.7 °C 2013
8 1.7 °C 1923
10 2.0 °C 1986
Lowest High Temperatures in Ottawa on September 17
Rank Temperature Year
1 11.7 °C 1893
1 11.7 °C 1959
3 12.0 °C 1990
4 12.2 °C 1943
5 12.8 °C 1973
5 12.8 °C 1950
7 13.3 °C 1953
7 13.3 °C 1937
7 13.3 °C 1945
7 13.3 °C 1969
7 13.3 °C 1954
What's the most it has ever rained in Ottawa on 9/17?
For the date of Sep 17, the most precipitation ever recorded in Ottawa history is 4.54 cm which happened in 2016.
All-Time Most Precipitation in Ottawa on September 17
Rank Precipitation Year
1 4.54 cm 2016
2 3.56 cm 1903
3 3.00 cm 1976
4 2.39 cm 1931
5 1.91 cm 1899
6 1.80 cm 1958
7 1.64 cm 1982
8 1.30 cm 1962
9 1.24 cm 1973
10 1.04 cm 1905
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.
© H Brothers Inc, 2021–2024
Contact us | Privacy policy