Ottawa September 29 Weather Records

Daily averages and all-time records for weather in Ottawa, Ontario for the date of September 29.
September 29 All-Time Records
1889–2024
Highest temperature 28.3 °C 1921
Lowest temperature -2.7 °C 2000
Lowest daily high 5.6 °C 1963
Highest daily low 20.0 °C 1959
Most precipitation 4.60 cm 1907
Most snow none -
September 29 Average Weather
1991–2020 1
Average high 18.1 °C
Average low 7.8 °C
Chance precipitation 43.2%
Chance snow 0.1%
Ottawa September 29 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 22.0 9.5 0.00 0.0
2022 14.5 7.0 0.00 0.0
2021 15.0 7.5 0.00 0.0
2020 19.0 15.5 1.26 0.0
2019 15.0 4.5 0.00 0.0
2018 16.5 9.5 0.04 0.0
2017 15.0 5.0 0.00 0.0
2016 19.0 8.5 0.00 0.0
2015 22.1 17.5 1.18 0.0
2014 22.5 14.5 0.00 0.0
2013 22.6 6.0 0.00 0.0
2012 17.7 2.5 n/a n/a
2011 25.2 17.4 0.27 0.0
2010 16.7 12.6 0.06 0.0
2009 14.8 10.9 0.93 0.0
2008 14.5 10.1 0.00 0.0
2007 17.2 9.8 0.00 0.0
2006 11.3 7.4 0.00 0.0
2005 17.2 8.3 0.38 0.0
2004 19.1 7.0 0.00 0.0
2003 17.4 7.3 0.18 0.0
2002 15.2 4.6 0.00 0.0
2001 18.2 7.2 0.00 0.0
2000 14.8 -2.7 0.00 0.0
1999 23.1 17.8 1.98 0.0
1998 20.4 3.6 0.18 0.0
1997 14.2 11.1 1.49 0.0
1996 16.8 9.3 0.60 0.0
1995 19.5 0.3 0.00 0.0
1994 16.4 10.1 0.00 0.0
1993 9.2 4.4 0.00 0.0
1992 10.3 5.6 0.00 0.0
1991 8.5 0.5 0.10 0.0
1990 15.0 11.6 2.38 0.0
1989 18.5 9.9 0.00 0.0
1988 13.7 1.3 0.08 0.0
1987 24.0 13.2 1.30 0.0
1986 20.8 11.4 2.54 0.0
1985 23.3 7.6 0.00 0.0
1984 13.4 4.4 0.00 0.0
1983 22.0 4.0 0.00 0.0
1982 18.5 6.0 0.00 0.0
1981 10.5 4.0 0.00 0.0
1980 16.5 -1.5 0.10 0.0
1979 22.0 10.5 0.02 0.0
1978 16.5 0.0 0.02 0.0
1977 13.0 5.5 0.52 0.0
1976 17.2 5.6 0.00 0.0
1975 22.8 7.2 0.00 0.0
1974 21.7 17.2 0.10 0.0
1973 17.8 10.0 0.00 0.0
1972 18.9 6.7 2.67 0.0
1971 27.2 15.6 0.00 0.0
1970 11.1 5.0 0.18 0.0
1969 13.3 7.2 0.05 0.0
1968 14.4 4.4 0.00 0.0
1967 20.6 9.4 0.58 0.0
1966 17.2 2.8 0.56 0.0
1965 11.7 5.6 0.00 0.0
1964 15.6 -1.1 0.00 0.0
1963 5.6 4.4 1.32 0.0
1962 12.2 7.2 0.05 0.0
1961 13.3 4.4 0.00 0.0
1960 20.0 9.4 0.03 0.0
1959 26.7 20.0 0.10 0.0
1958 17.2 2.8 0.00 0.0
1957 20.0 1.1 0.00 0.0
1956 21.7 -1.1 0.00 0.0
1955 20.6 2.8 0.00 0.0
1954 17.8 5.0 4.11 0.0
1953 15.0 7.2 0.00 0.0
1952 23.9 7.8 0.00 0.0
1951 10.0 2.8 0.00 0.0
1950 22.2 8.3 0.00 0.0
1949 12.2 8.3 0.00 0.0
1948 27.8 7.2 0.00 0.0
1947 13.3 1.1 1.65 0.0
1946 21.7 12.2 2.62 0.0
1945 n/a n/a 0.08 0.0
1944 14.4 5.0 0.00 0.0
1943 16.7 3.3 0.00 0.0
1942 11.7 -2.2 0.00 0.0
1941 11.1 0.0 0.00 0.0
1940 16.1 10.0 0.00 0.0
1939 20.6 3.9 2.08 0.0
1938 13.3 6.7 0.00 0.0
1937 13.9 3.9 0.00 0.0
1936 11.1 0.0 0.00 0.0
1935 12.8 2.2 0.28 0.0
1934 15.6 10.0 0.20 0.0
1933 17.2 11.1 0.00 0.0
1932 9.4 4.4 0.00 0.0
1931 17.8 5.0 0.00 0.0
1930 13.3 7.8 0.10 0.0
1929 13.9 12.8 0.00 0.0
1928 13.3 -1.7 0.00 0.0
1927 22.8 12.2 0.28 0.0
1926 16.1 1.7 0.00 0.0
1925 14.4 6.1 0.00 0.0
1924 21.7 8.3 3.45 0.0
1923 20.0 13.3 0.00 0.0
1922 26.7 6.1 0.00 0.0
1921 28.3 7.2 0.00 0.0
1920 21.7 10.0 0.56 0.0
1919 23.3 7.8 0.05 0.0
1918 12.8 3.9 0.18 0.0
1917 14.4 8.3 0.30 0.0
1916 17.8 11.7 2.26 0.0
1915 15.6 3.3 0.00 0.0
1914 11.7 -1.1 0.10 0.0
1913 20.0 7.2 0.00 0.0
1912 9.4 1.7 1.40 0.0
1911 6.7 1.7 0.46 0.0
1910 20.0 2.2 0.00 0.0
1909 18.9 2.8 0.00 0.0
1908 21.1 7.2 0.64 0.0
1907 7.2 2.8 4.60 0.0
1906 16.7 5.6 3.96 0.0
1905 24.4 6.7 0.00 0.0
1904 21.7 7.2 2.79 0.0
1903 12.8 3.3 0.00 0.0
1902 22.8 16.7 0.36 0.0
1901 18.9 12.2 2.97 0.0
1900 12.8 6.7 1.91 0.0
1899 15.0 6.7 1.52 0.0
1898 25.0 8.3 0.00 0.0
1897 20.0 6.7 0.08 0.0
1896 16.7 1.1 0.00 0.0
1895 12.8 6.1 0.81 0.0
1894 25.0 5.6 0.00 0.0
1893 13.9 6.1 0.08 0.0
1892 15.0 3.3 0.00 0.0
1891 21.7 9.4 0.46 0.0
1890 15.6 0.6 0.00 0.0
What's the all-time high for Ottawa on 9/29?
For the date of Sep 29, the highest temperature ever reached in Ottawa history is 28.3 °C which happened in 1921.
Highest Temperatures in Ottawa on September 29
Rank Temperature Year
1 28.3 °C 1921
2 27.8 °C 1948
3 27.2 °C 1971
4 26.7 °C 1959
4 26.7 °C 1922
6 25.2 °C 2011
7 25.0 °C 1898
7 25.0 °C 1894
9 24.4 °C 1905
10 24.0 °C 1987
What's the all-time low for Ottawa on 9/29?
For the date of Sep 29, the lowest temperature ever reached in Ottawa history is -2.7 °C which happened in 2000.
Lowest Temperatures in Ottawa on September 29
Rank Temperature Year
1 -2.7 °C 2000
2 -2.2 °C 1942
3 -1.7 °C 1928
4 -1.5 °C 1980
5 -1.1 °C 1914
5 -1.1 °C 1956
5 -1.1 °C 1964
8 0.0 °C 1941
8 0.0 °C 1978
8 0.0 °C 1936
Lowest High Temperatures in Ottawa on September 29
Rank Temperature Year
1 5.6 °C 1963
2 6.7 °C 1911
3 7.2 °C 1907
4 8.5 °C 1991
5 9.2 °C 1993
6 9.4 °C 1912
6 9.4 °C 1932
8 10.0 °C 1951
9 10.3 °C 1992
10 10.5 °C 1981
What's the most it has ever rained in Ottawa on 9/29?
For the date of Sep 29, the most precipitation ever recorded in Ottawa history is 4.60 cm which happened in 1907.
All-Time Most Precipitation in Ottawa on September 29
Rank Precipitation Year
1 4.60 cm 1907
2 4.11 cm 1954
3 3.96 cm 1906
4 3.45 cm 1924
5 2.97 cm 1901
6 2.79 cm 1904
7 2.67 cm 1972
8 2.62 cm 1946
9 2.54 cm 1986
10 2.38 cm 1990
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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