Ottawa October 18 Weather Records

Daily averages and all-time records for weather in Ottawa, Ontario for the date of October 18.
October 18 All-Time Records
1889–2024
Highest temperature 26.7 °C 1947
Lowest temperature -7.8 °C 1939
Lowest daily high 1.7 °C 1959
Highest daily low 11.1 °C 1947
Most precipitation 3.51 cm 1928
Most snow 3.0 cm 1959
October 18 Average Weather
1991–2020 1
Average high 12.9 °C
Average low 4.1 °C
Chance precipitation 46.6%
Chance snow 1.8%
Ottawa October 18 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 15.5 3.0 0.00 0.0
2022 11.0 4.0 0.06 0.0
2021 11.5 6.0 0.04 0.0
2020 14.0 3.5 0.04 0.0
2019 9.5 5.5 0.00 0.0
2018 7.5 -1.5 0.00 0.0
2017 21.5 6.0 0.14 0.0
2016 24.0 8.0 0.00 0.0
2015 2.5 -3.5 0.00 0.0
2014 14.3 9.0 0.04 0.0
2013 14.3 10.2 0.00 0.0
2012 21.5 6.0 0.14 0.0
2011 15.6 7.0 0.03 0.0
2010 11.3 3.3 0.00 0.0
2009 10.4 -3.5 0.00 0.0
2008 11.5 -3.8 0.00 0.0
2007 17.6 7.3 0.00 0.0
2006 15.0 7.0 0.03 0.0
2005 12.5 1.9 0.39 0.0
2004 8.7 2.7 0.00 0.0
2003 6.9 3.4 0.00 0.0
2002 10.9 1.1 1.69 0.0
2001 9.2 0.3 0.00 0.0
2000 14.7 7.8 0.29 0.0
1999 7.8 5.0 0.00 0.0
1998 21.8 10.2 0.00 0.0
1997 13.3 -2.8 0.00 0.0
1996 11.9 3.0 0.00 0.0
1995 19.6 5.1 0.00 0.0
1994 9.8 7.4 0.14 0.0
1993 11.9 8.0 0.00 0.0
1992 8.5 -1.1 0.22 0.0
1991 18.5 1.8 0.30 0.0
1990 20.5 7.0 1.66 0.0
1989 3.8 0.4 0.00 0.0
1988 16.4 9.2 0.04 0.0
1987 13.5 8.1 0.00 0.0
1986 9.9 -0.5 0.02 0.0
1985 18.2 5.6 0.62 0.0
1984 13.9 5.7 0.00 0.0
1983 12.5 4.0 0.00 0.0
1982 11.0 -0.5 0.00 0.0
1981 12.0 2.5 0.72 0.0
1980 20.0 10.0 0.00 0.0
1979 11.0 2.0 0.00 0.0
1978 10.0 -1.0 0.20 0.0
1977 7.0 0.5 0.00 0.0
1976 4.4 -1.1 0.00 0.0
1975 9.4 3.3 0.00 0.0
1974 4.4 -3.3 0.00 0.0
1973 8.3 1.7 0.00 0.0
1972 4.4 -4.4 0.00 0.0
1971 20.0 3.9 0.00 0.0
1970 14.4 -1.1 0.00 0.0
1969 11.7 3.9 0.00 0.0
1968 23.9 10.6 1.57 0.0
1967 10.6 7.2 3.33 0.0
1966 5.6 -1.7 0.00 0.0
1965 20.0 2.2 0.00 0.0
1964 21.7 3.9 0.20 0.0
1963 25.0 6.7 0.00 0.0
1962 13.3 0.6 0.03 0.0
1961 24.4 7.8 0.00 0.0
1960 11.7 3.3 0.00 0.0
1959 1.7 -1.7 0.30 3.0
1958 8.9 3.3 0.00 0.0
1957 16.1 8.9 0.20 0.0
1956 12.2 8.3 0.00 0.0
1955 10.0 6.7 0.00 0.0
1954 8.9 0.6 0.00 0.0
1953 22.8 3.3 0.00 0.0
1952 5.6 -6.7 0.00 0.0
1951 23.9 6.7 0.00 0.0
1950 12.2 4.4 0.00 0.0
1949 19.4 2.8 0.00 0.0
1948 4.4 1.7 0.00 0.0
1947 26.7 11.1 0.08 0.0
1946 1.7 -1.1 1.57 0.0
1945 20.0 1.7 0.00 0.0
1944 21.7 4.4 0.23 0.0
1943 7.8 1.1 0.05 0.0
1942 13.9 3.3 0.00 0.0
1941 10.6 -1.7 0.76 0.0
1940 3.9 1.7 0.00 0.0
1939 8.9 -7.8 0.08 0.0
1938 14.4 3.3 0.00 0.0
1937 14.4 2.2 0.48 0.0
1936 1.7 -0.6 0.18 1.8
1935 17.2 6.7 0.10 0.0
1934 8.9 5.6 0.00 0.0
1933 9.4 0.0 0.00 0.0
1932 15.6 5.6 0.00 0.0
1931 6.1 1.7 0.00 0.0
1930 6.7 0.0 1.68 0.0
1929 7.8 -1.7 0.00 0.0
1928 6.7 5.6 3.51 0.0
1927 12.2 6.1 0.00 0.0
1926 4.4 -3.3 0.05 0.0
1925 10.6 -6.1 0.00 0.0
1924 11.1 -2.2 0.30 0.0
1923 20.6 4.4 0.00 0.0
1922 5.6 -1.7 0.13 0.0
1921 21.7 8.9 0.00 0.0
1920 12.8 7.8 0.00 0.0
1919 12.8 2.8 0.00 0.0
1918 8.3 0.6 0.61 0.0
1917 12.2 3.3 0.00 0.0
1916 4.4 -4.4 0.00 0.0
1915 14.4 7.2 0.05 0.0
1914 15.0 8.3 0.05 0.0
1913 13.3 8.3 1.12 0.0
1912 19.4 4.4 0.00 0.0
1911 16.1 10.6 2.03 0.0
1910 16.7 5.6 0.00 0.0
1909 7.8 -1.1 0.00 0.0
1908 25.0 7.2 0.00 0.0
1907 13.9 2.8 0.10 0.0
1906 16.1 1.1 0.00 0.0
1905 17.2 4.4 0.69 0.0
1904 21.1 5.6 0.00 0.0
1903 15.0 3.3 0.46 0.0
1902 3.9 -4.4 0.81 0.0
1901 6.7 -0.6 0.00 0.0
1900 15.6 3.3 0.00 0.0
1899 19.4 8.9 1.80 0.0
1898 9.4 -1.1 0.00 0.0
1897 15.6 -3.3 0.00 0.0
1896 6.7 -0.6 0.00 0.0
1895 7.8 -7.8 0.00 0.0
1894 10.6 2.2 0.00 0.0
1893 10.6 2.2 0.00 0.0
1892 12.2 -0.6 0.00 0.0
1891 16.7 0.6 0.00 0.0
1890 11.7 4.4 0.00 0.0
What's the all-time high for Ottawa on 10/18?
For the date of Oct 18, the highest temperature ever reached in Ottawa history is 26.7 °C which happened in 1947.
Highest Temperatures in Ottawa on October 18
Rank Temperature Year
1 26.7 °C 1947
2 25.0 °C 1908
2 25.0 °C 1963
4 24.4 °C 1961
5 24.0 °C 2016
6 23.9 °C 1951
6 23.9 °C 1968
8 22.8 °C 1953
9 21.8 °C 1998
10 21.7 °C 1921
10 21.7 °C 1964
10 21.7 °C 1944
What's the all-time low for Ottawa on 10/18?
For the date of Oct 18, the lowest temperature ever reached in Ottawa history is -7.8 °C which has happened 2 times, most recently in 1939.
Lowest Temperatures in Ottawa on October 18
Rank Temperature Year
1 -7.8 °C 1895
1 -7.8 °C 1939
3 -6.7 °C 1952
4 -6.1 °C 1925
5 -4.4 °C 1916
5 -4.4 °C 1902
5 -4.4 °C 1972
8 -3.8 °C 2008
9 -3.5 °C 2015
9 -3.5 °C 2009
Lowest High Temperatures in Ottawa on October 18
Rank Temperature Year
1 1.7 °C 1959
1 1.7 °C 1936
1 1.7 °C 1946
4 2.5 °C 2015
5 3.8 °C 1989
6 3.9 °C 1902
6 3.9 °C 1940
8 4.4 °C 1926
8 4.4 °C 1976
8 4.4 °C 1972
8 4.4 °C 1948
8 4.4 °C 1974
8 4.4 °C 1916
What's the most it has ever rained in Ottawa on 10/18?
For the date of Oct 18, the most precipitation ever recorded in Ottawa history is 3.51 cm which happened in 1928.
All-Time Most Precipitation in Ottawa on October 18
Rank Precipitation Year
1 3.51 cm 1928
2 3.33 cm 1967
3 2.03 cm 1911
4 1.80 cm 1899
5 1.69 cm 2002
6 1.68 cm 1930
7 1.66 cm 1990
8 1.57 cm 1946
8 1.57 cm 1968
10 1.12 cm 1913
All-Time Most Snow in Ottawa on October 18
Rank Precipitation Year
1 3.0 cm 1959
2 1.8 cm 1936
Weather Station Details
Years Station Coordinates
1889–2024 Ottawa CDA location