Ottawa July 18 Weather Records

Daily averages and all-time records for weather in Ottawa, Ontario for the date of July 18.
July 18 All-Time Records
1889–2024
Highest temperature 35.0 °C 1982
Lowest temperature 4.4 °C 1924
Lowest daily high 18.9 °C 1920
Highest daily low 23.0 °C 2005
Most precipitation 3.28 cm 1996
Most snow none -
July 18 Average Weather
1991–2020 1
Average high 26.9 °C
Average low 16.0 °C
Chance precipitation 38.9%
Chance snow 0%
Ottawa July 18 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 28.0 17.0 1.74 0.0
2022 24.0 19.0 2.16 0.0
2021 30.0 18.0 0.00 0.0
2020 33.0 18.0 2.40 0.0
2019 28.0 16.5 0.00 0.0
2018 25.0 13.0 0.00 0.0
2017 29.5 17.0 0.00 0.0
2016 28.5 16.5 0.00 0.0
2015 28.0 16.0 0.00 0.0
2014 26.3 12.3 0.00 0.0
2013 30.4 19.8 0.10 0.0
2012 26.9 18.3 0.00 0.0
2011 27.8 19.9 0.00 0.0
2010 26.5 18.5 1.13 0.0
2009 24.0 16.0 0.56 0.0
2008 24.0 19.0 1.50 0.0
2007 27.5 15.8 0.56 0.0
2006 26.3 19.7 0.00 0.0
2005 32.0 23.0 0.00 0.0
2004 27.8 15.7 0.00 0.0
2003 22.5 10.6 0.00 0.0
2002 23.7 17.7 0.00 0.0
2001 27.5 13.5 0.00 0.0
2000 20.5 16.9 0.00 0.0
1999 28.8 21.0 0.00 0.0
1998 27.1 15.4 0.00 0.0
1997 24.8 17.0 0.00 0.0
1996 30.1 16.8 3.28 0.0
1995 27.4 18.5 1.54 0.0
1994 28.7 17.0 0.00 0.0
1993 27.8 12.1 0.00 0.0
1992 25.4 16.4 0.88 0.0
1991 33.9 18.5 0.00 0.0
1990 31.1 19.9 0.00 0.0
1989 28.9 13.9 0.00 0.0
1988 30.4 16.5 0.04 0.0
1987 31.8 17.4 0.08 0.0
1986 28.3 16.5 0.00 0.0
1985 28.1 10.8 0.00 0.0
1984 23.0 14.9 0.06 0.0
1983 28.5 18.5 0.00 0.0
1982 35.0 21.0 2.10 0.0
1981 24.5 17.0 0.00 0.0
1980 28.5 16.0 0.00 0.0
1979 26.0 14.0 0.00 0.0
1978 29.5 11.5 0.10 0.0
1977 29.0 19.5 0.00 0.0
1976 25.6 13.9 0.00 0.0
1975 32.8 16.7 0.00 0.0
1974 28.3 17.2 1.55 0.0
1973 28.3 11.7 0.00 0.0
1972 30.0 16.7 0.23 0.0
1971 21.7 10.6 0.00 0.0
1970 21.7 16.1 0.00 0.0
1969 29.4 20.0 0.00 0.0
1968 32.2 20.6 0.38 0.0
1967 26.7 14.4 0.00 0.0
1966 28.3 19.4 0.53 0.0
1965 22.8 15.0 0.03 0.0
1964 31.7 20.0 0.00 0.0
1963 30.0 18.3 0.28 0.0
1962 25.6 15.0 0.05 0.0
1961 26.1 15.6 0.00 0.0
1960 26.1 11.1 1.35 0.0
1959 28.9 16.7 1.63 0.0
1958 24.4 8.9 2.69 0.0
1957 30.0 12.2 0.00 0.0
1956 24.4 10.6 0.00 0.0
1955 28.9 20.6 0.00 0.0
1954 27.8 11.7 0.00 0.0
1953 33.3 18.3 0.00 0.0
1952 30.0 20.0 0.23 0.0
1951 26.7 9.4 2.03 0.0
1950 26.1 19.4 0.05 0.0
1949 25.0 20.0 0.00 0.0
1948 29.4 17.8 0.00 0.0
1947 28.3 19.4 0.23 0.0
1946 31.7 10.0 0.00 0.0
1945 26.7 13.9 0.46 0.0
1944 26.7 8.9 0.00 0.0
1943 27.8 17.2 0.00 0.0
1942 31.1 17.2 0.05 0.0
1941 26.7 8.3 0.00 0.0
1940 28.9 11.1 0.00 0.0
1939 23.9 10.0 0.00 0.0
1938 29.4 15.0 0.00 0.0
1937 26.1 13.3 0.00 0.0
1936 25.0 12.8 0.05 0.0
1935 30.6 11.1 0.48 0.0
1934 28.3 10.0 0.00 0.0
1933 21.1 12.8 0.00 0.0
1932 20.6 15.0 0.00 0.0
1931 22.8 15.0 0.00 0.0
1930 27.8 10.6 0.00 0.0
1929 22.8 16.1 1.07 0.0
1928 24.4 19.4 0.51 0.0
1927 26.7 13.9 0.94 0.0
1926 26.7 16.7 0.10 0.0
1925 22.8 12.2 0.48 0.0
1924 22.2 4.4 0.00 0.0
1923 30.6 15.0 0.00 0.0
1922 28.9 16.7 0.00 0.0
1921 27.8 16.1 0.18 0.0
1920 18.9 12.2 0.58 0.0
1919 32.8 15.6 0.00 0.0
1918 29.4 13.3 0.00 0.0
1917 27.2 17.8 0.46 0.0
1916 31.7 14.4 0.00 0.0
1915 23.9 11.1 0.00 0.0
1914 24.4 15.0 0.00 0.0
1913 30.6 16.7 0.00 0.0
1912 26.7 12.2 1.32 0.0
1911 25.0 12.8 0.46 0.0
1910 24.4 11.7 0.00 0.0
1909 21.1 12.2 2.77 0.0
1908 20.0 15.0 0.28 0.0
1907 28.9 17.8 0.00 0.0
1906 27.8 12.8 0.00 0.0
1905 32.8 20.0 0.00 0.0
1904 31.7 17.2 0.23 0.0
1903 27.8 15.0 0.15 0.0
1902 23.3 14.4 0.00 0.0
1901 29.4 18.9 0.61 0.0
1900 24.4 17.8 0.30 0.0
1899 26.7 13.3 0.71 0.0
1898 31.1 15.0 1.98 0.0
1897 30.0 17.8 0.00 0.0
1896 28.3 11.1 0.00 0.0
1895 23.9 11.1 0.00 0.0
1894 32.2 16.1 0.00 0.0
1893 26.1 15.0 0.13 0.0
1892 28.3 11.1 0.00 0.0
1891 21.7 13.9 0.00 0.0
1890 21.1 10.6 0.08 0.0
What's the all-time high for Ottawa on 7/18?
For the date of Jul 18, the highest temperature ever reached in Ottawa history is 35.0 °C which happened in 1982.
Highest Temperatures in Ottawa on July 18
Rank Temperature Year
1 35.0 °C 1982
2 33.9 °C 1991
3 33.3 °C 1953
4 33.0 °C 2020
5 32.8 °C 1975
5 32.8 °C 1905
5 32.8 °C 1919
8 32.2 °C 1968
8 32.2 °C 1894
10 32.0 °C 2005
What's the all-time low for Ottawa on 7/18?
For the date of Jul 18, the lowest temperature ever reached in Ottawa history is 4.4 °C which happened in 1924.
Lowest Temperatures in Ottawa on July 18
Rank Temperature Year
1 4.4 °C 1924
2 8.3 °C 1941
3 8.9 °C 1944
3 8.9 °C 1958
5 9.4 °C 1951
6 10.0 °C 1946
6 10.0 °C 1934
6 10.0 °C 1939
9 10.6 °C 2003
9 10.6 °C 1930
9 10.6 °C 1971
9 10.6 °C 1956
9 10.6 °C 1890
Lowest High Temperatures in Ottawa on July 18
Rank Temperature Year
1 18.9 °C 1920
2 20.0 °C 1908
3 20.5 °C 2000
4 20.6 °C 1932
5 21.1 °C 1909
5 21.1 °C 1933
5 21.1 °C 1890
8 21.7 °C 1971
8 21.7 °C 1891
8 21.7 °C 1970
What's the most it has ever rained in Ottawa on 7/18?
For the date of Jul 18, the most precipitation ever recorded in Ottawa history is 3.28 cm which happened in 1996.
All-Time Most Precipitation in Ottawa on July 18
Rank Precipitation Year
1 3.28 cm 1996
2 2.77 cm 1909
3 2.69 cm 1958
4 2.40 cm 2020
5 2.16 cm 2022
6 2.10 cm 1982
7 2.03 cm 1951
8 1.98 cm 1898
9 1.74 cm 2023
10 1.63 cm 1959
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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