Ottawa April 18 Weather Records

Daily averages and all-time records for weather in Ottawa, Ontario for the date of April 18.
April 18 All-Time Records
1889–2024
Highest temperature 30.0 °C 1976
Lowest temperature -7.8 °C 1916
Lowest daily high -0.5 °C 1983
Highest daily low 15.7 °C 2002
Most precipitation 2.36 cm 1891
Most snow 7.6 cm 1918
April 18 Average Weather
1991–2020 1
Average high 12.1 °C
Average low 1.9 °C
Chance precipitation 42.1%
Chance snow 6.8%
Ottawa April 18 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 8.0 3.5 0.10 0.0
2022 13.0 -1.0 1.10 0.0
2021 15.0 4.5 0.00 0.0
2020 n/a n/a n/a n/a
2019 17.0 4.0 1.06 0.0
2018 7.0 0.0 0.00 0.0
2017 10.0 -2.5 0.00 0.0
2016 15.0 7.0 0.34 0.0
2015 16.0 4.8 0.00 0.0
2014 11.2 0.0 0.04 0.0
2013 19.5 3.3 1.06 0.0
2012 11.6 -2.4 0.00 0.0
2011 7.3 0.4 0.00 0.0
2010 14.5 0.6 0.00 0.0
2009 12.2 7.0 0.00 0.0
2008 24.8 4.5 0.00 0.0
2007 15.0 4.2 0.00 0.0
2006 20.6 4.9 0.00 0.0
2005 19.3 2.7 0.00 0.0
2004 18.3 0.4 0.00 0.0
2003 11.5 -2.5 0.00 0.0
2002 26.4 15.7 0.04 0.0
2001 6.0 -1.9 0.00 0.0
2000 8.4 0.5 0.00 0.0
1999 15.9 4.3 0.00 0.0
1998 16.2 4.9 0.00 0.0
1997 5.0 1.2 1.00 2.0
1996 13.1 -0.6 0.00 0.0
1995 12.8 -1.1 0.20 0.0
1994 12.5 -2.1 0.05 0.0
1993 10.5 0.3 0.08 0.0
1992 10.5 -1.6 0.00 0.0
1991 8.1 3.6 0.00 0.0
1990 6.6 -3.8 0.00 0.0
1989 6.9 -3.7 0.00 0.0
1988 7.6 3.8 0.00 0.0
1987 23.8 11.4 0.00 0.0
1986 18.5 4.3 0.00 0.0
1985 3.7 -2.5 1.55 0.2
1984 7.5 4.9 0.06 0.0
1983 -0.5 -6.0 0.08 0.8
1982 9.0 -1.5 0.00 0.0
1981 14.0 7.0 0.04 0.0
1980 12.5 3.5 0.00 0.0
1979 11.0 1.5 0.00 0.0
1978 11.5 -1.0 0.00 0.0
1977 21.1 1.7 0.00 0.0
1976 30.0 9.4 0.00 0.0
1975 15.6 1.1 0.58 0.0
1974 7.8 3.3 0.00 0.0
1973 20.6 1.1 0.00 0.0
1972 5.6 0.6 0.41 0.0
1971 15.0 -2.2 0.00 0.0
1970 10.0 3.3 0.00 0.0
1969 5.0 0.6 0.48 0.0
1968 19.4 4.4 0.00 0.0
1967 10.0 5.0 0.10 0.0
1966 15.0 0.6 0.00 0.0
1965 5.6 -2.2 0.00 0.0
1964 13.9 6.1 0.00 0.0
1963 13.3 10.0 0.00 0.0
1962 11.1 -5.0 0.00 0.0
1961 7.8 -0.6 0.03 0.0
1960 10.0 0.6 0.08 0.0
1959 15.0 3.9 0.00 0.0
1958 21.7 8.3 0.20 0.0
1957 16.1 6.1 0.00 0.0
1956 6.7 0.0 0.00 0.0
1955 17.8 0.6 1.09 0.0
1954 13.9 1.1 0.00 0.0
1953 5.6 -3.9 0.00 0.0
1952 17.8 5.0 0.00 0.0
1951 8.9 2.2 0.53 0.0
1950 16.1 2.8 0.00 0.0
1949 9.4 -0.6 1.04 0.0
1948 12.2 -4.4 0.00 0.0
1947 6.7 -0.6 0.00 0.0
1946 14.4 0.6 0.00 0.0
1945 12.2 1.1 0.15 0.0
1944 11.1 -3.9 0.00 0.0
1943 8.3 -3.9 0.00 0.0
1942 6.7 1.1 0.05 0.0
1941 16.7 0.6 0.10 0.0
1940 8.9 1.7 0.89 0.0
1939 2.8 0.0 0.20 0.0
1938 20.0 10.0 0.99 0.0
1937 12.8 0.0 0.00 0.0
1936 8.9 2.8 0.00 0.0
1935 12.8 2.2 0.00 0.0
1934 15.0 1.7 0.00 0.0
1933 12.2 8.9 0.08 0.0
1932 8.3 -0.6 0.00 0.0
1931 16.7 5.0 0.58 0.0
1930 17.2 2.8 0.20 0.0
1929 4.4 0.6 0.00 0.0
1928 13.3 -2.8 0.00 0.0
1927 26.1 2.8 0.00 0.0
1926 0.6 -7.2 0.00 0.0
1925 11.1 -3.3 0.00 0.0
1924 7.8 3.3 2.06 0.0
1923 3.9 -4.4 0.00 0.0
1922 12.2 7.8 0.69 0.0
1921 12.8 -3.3 0.00 0.0
1920 14.4 3.3 0.00 0.0
1919 7.8 3.3 0.08 0.0
1918 8.3 -6.7 0.76 7.6
1917 16.1 4.4 0.08 0.0
1916 11.1 -7.8 0.00 0.0
1915 18.9 -0.6 0.00 0.0
1914 20.0 0.6 0.00 0.0
1913 22.2 0.0 0.00 0.0
1912 5.6 1.7 0.84 0.0
1911 10.6 -3.9 0.00 0.0
1910 11.7 5.6 2.21 0.0
1909 7.2 -0.6 0.58 0.0
1908 8.3 0.0 0.00 0.0
1907 6.1 0.0 0.00 0.0
1906 21.7 1.7 0.00 0.0
1905 5.0 -6.1 0.00 0.0
1904 9.4 -2.2 0.00 0.0
1903 11.1 -1.7 0.00 0.0
1902 17.2 -1.1 0.00 0.0
1901 15.6 6.1 0.08 0.0
1900 21.1 3.9 1.22 0.0
1899 15.6 1.1 0.00 0.0
1898 12.2 -0.6 0.00 0.0
1897 13.3 -1.1 0.05 0.5
1896 15.0 8.3 0.00 0.0
1895 18.3 2.8 0.00 0.0
1894 21.7 3.3 0.00 0.0
1893 8.9 1.1 0.15 0.0
1892 6.1 -2.2 0.00 0.0
1891 15.0 6.1 2.36 0.0
1890 2.2 -5.6 0.00 0.0
What's the all-time high for Ottawa on 4/18?
For the date of Apr 18, the highest temperature ever reached in Ottawa history is 30.0 °C which happened in 1976.
Highest Temperatures in Ottawa on April 18
Rank Temperature Year
1 30.0 °C 1976
2 26.4 °C 2002
3 26.1 °C 1927
4 24.8 °C 2008
5 23.8 °C 1987
6 22.2 °C 1913
7 21.7 °C 1958
7 21.7 °C 1906
7 21.7 °C 1894
10 21.1 °C 1900
10 21.1 °C 1977
What's the all-time low for Ottawa on 4/18?
For the date of Apr 18, the lowest temperature ever reached in Ottawa history is -7.8 °C which happened in 1916.
Lowest Temperatures in Ottawa on April 18
Rank Temperature Year
1 -7.8 °C 1916
2 -7.2 °C 1926
3 -6.7 °C 1918
4 -6.1 °C 1905
5 -6.0 °C 1983
6 -5.6 °C 1890
7 -5.0 °C 1962
8 -4.4 °C 1948
8 -4.4 °C 1923
10 -3.9 °C 1943
10 -3.9 °C 1944
10 -3.9 °C 1953
10 -3.9 °C 1911
Lowest High Temperatures in Ottawa on April 18
Rank Temperature Year
1 -0.5 °C 1983
2 0.6 °C 1926
3 2.2 °C 1890
4 2.8 °C 1939
5 3.7 °C 1985
6 3.9 °C 1923
7 4.4 °C 1929
8 5.0 °C 1969
8 5.0 °C 1997
8 5.0 °C 1905
What's the most it has ever rained in Ottawa on 4/18?
For the date of Apr 18, the most precipitation ever recorded in Ottawa history is 2.36 cm which happened in 1891.
All-Time Most Precipitation in Ottawa on April 18
Rank Precipitation Year
1 2.36 cm 1891
2 2.21 cm 1910
3 2.06 cm 1924
4 1.55 cm 1985
5 1.22 cm 1900
6 1.10 cm 2022
7 1.09 cm 1955
8 1.06 cm 2019
8 1.06 cm 2013
10 1.04 cm 1949
All-Time Most Snow in Ottawa on April 18
Rank Precipitation Year
1 7.6 cm 1918
2 2.0 cm 1997
3 0.8 cm 1983
4 0.5 cm 1897
5 0.2 cm 1985
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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