Ottawa March 18 Weather Records

Daily averages and all-time records for weather in Ottawa, Ontario for the date of March 18.
March 18 All-Time Records
1889–2024
Highest temperature 24.7 °C 2012
Lowest temperature -27.2 °C 1916
Lowest daily high -13.3 °C 1967
Highest daily low 4.9 °C 2011
Most precipitation 2.18 cm 1983
Most snow 14.0 cm 1899
March 18 Average Weather
1991–2020 1
Average high 3.1 °C
Average low -6.1 °C
Chance precipitation 35.9%
Chance snow 21.5%
Ottawa March 18 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2024 2.0 -1.0 0.00 0.0
2023 n/a n/a n/a n/a
2022 11.0 1.0 0.20 0.0
2021 5.0 1.0 0.00 0.0
2020 n/a -4.0 0.00 n/a
2019 -1.5 -13.5 0.00 0.0
2018 -4.0 -18.0 0.00 0.0
2017 0.0 -14.5 0.00 0.0
2016 1.2 -1.0 0.00 0.0
2015 -3.6 -11.6 0.00 0.0
2014 -2.7 -16.0 0.00 0.0
2013 -3.5 -17.6 0.88 10.0
2012 24.7 3.3 0.00 0.0
2011 8.7 4.9 0.00 0.0
2010 14.7 4.4 0.00 0.0
2009 13.5 -0.2 0.00 0.0
2008 1.3 -13.2 1.46 6.0
2007 0.0 -7.8 0.00 0.0
2006 -5.2 -9.5 0.05 0.5
2005 2.5 -11.0 0.00 0.0
2004 -2.0 -8.5 0.04 0.4
2003 4.7 0.0 0.00 0.0
2002 -0.9 -4.0 0.88 8.8
2001 5.5 -4.4 0.00 0.0
2000 -0.8 -10.0 0.00 0.0
1999 5.9 -0.3 0.00 0.0
1998 3.8 -7.1 0.22 4.0
1997 -1.4 -11.5 0.00 0.0
1996 7.5 -6.3 0.00 0.0
1995 8.0 0.4 0.00 0.0
1994 -0.6 -10.5 0.00 0.0
1993 -9.6 -21.2 0.00 0.0
1992 -2.0 -18.2 0.00 0.0
1991 2.6 -2.1 0.17 0.6
1990 5.0 0.8 0.00 0.0
1989 -1.6 -7.4 0.02 0.2
1988 1.1 -7.1 0.07 0.4
1987 7.2 -4.0 0.00 0.0
1986 5.7 -4.0 0.24 0.0
1985 -3.2 -15.5 0.00 0.0
1984 n/a -9.1 0.12 1.0
1983 9.0 0.0 2.18 0.0
1982 7.5 -8.5 0.04 0.2
1981 -6.0 -13.5 0.08 0.6
1980 1.0 n/a 0.02 0.2
1979 6.5 -7.5 0.00 0.0
1978 1.5 -10.0 0.08 1.6
1977 -1.1 -5.0 0.00 0.0
1976 -5.0 -22.2 0.94 8.9
1975 8.3 -6.7 0.23 0.0
1974 0.0 -9.4 0.43 4.1
1973 2.2 -0.6 0.13 0.5
1972 -4.4 -7.2 0.00 0.0
1971 1.1 -12.2 0.00 0.0
1970 5.6 -8.3 0.00 0.0
1969 1.7 -2.8 0.00 0.0
1968 10.0 -4.4 0.00 0.0
1967 -13.3 -21.7 0.00 0.0
1966 15.6 -0.6 0.00 0.0
1965 3.9 -3.3 0.08 0.0
1964 -2.8 -7.8 0.00 0.0
1963 -2.2 -6.7 0.00 0.0
1962 1.7 -7.8 0.00 0.0
1961 -1.1 -17.2 0.00 0.0
1960 0.6 -2.2 0.13 1.3
1959 -1.1 -15.0 0.00 0.0
1958 4.4 -1.7 0.10 1.0
1957 0.0 -6.1 0.00 0.0
1956 -4.4 -19.4 0.00 0.0
1955 -3.3 -13.9 0.15 1.5
1954 0.0 -13.3 0.00 0.0
1953 7.8 -3.9 0.10 0.0
1952 3.3 -3.9 0.00 0.0
1951 2.8 -5.0 0.00 0.0
1950 -5.0 -8.9 0.00 0.0
1949 -6.7 -12.2 0.00 0.0
1948 2.8 -10.0 1.27 0.0
1947 -2.2 -12.2 0.00 0.0
1946 9.4 -0.6 0.00 0.0
1945 12.8 1.7 0.00 0.0
1944 -9.4 -11.1 0.00 0.0
1943 -0.6 -5.6 0.00 0.0
1942 2.8 1.7 0.00 0.0
1941 -10.6 -20.6 0.05 0.5
1940 -3.9 -22.8 0.51 5.1
1939 -6.1 -17.8 0.00 0.0
1938 1.7 0.0 0.00 0.0
1937 1.1 -3.9 0.23 2.3
1936 2.8 0.0 0.25 0.0
1935 0.0 -10.6 0.00 0.0
1934 -6.7 -9.4 0.00 0.0
1933 -3.3 -12.2 0.00 0.0
1932 -6.7 -11.7 0.18 1.8
1931 5.6 -1.7 0.00 0.0
1930 -1.7 -6.7 0.00 0.0
1929 5.6 -10.6 0.00 0.0
1928 -0.6 -7.8 1.14 11.4
1927 5.0 -2.2 1.24 0.0
1926 1.1 -8.3 0.08 0.8
1925 4.4 0.0 0.00 0.0
1924 0.0 -8.9 0.00 0.0
1923 3.9 -8.3 0.00 0.0
1922 -2.2 -13.3 0.00 0.0
1921 -3.3 -15.0 0.00 0.0
1920 0.0 -10.6 0.00 0.0
1919 5.0 1.1 0.61 0.0
1918 3.9 -10.6 0.00 0.0
1917 0.0 -7.8 0.00 0.0
1916 -11.1 -27.2 0.00 0.0
1915 -1.7 -8.9 0.00 0.0
1914 3.3 -1.7 0.10 0.0
1913 5.6 -10.0 0.00 0.0
1912 5.6 0.6 0.00 0.0
1911 0.0 -6.7 0.38 3.8
1910 -0.6 -19.4 0.00 0.0
1909 -1.1 -10.6 0.13 1.3
1908 -4.4 -15.6 0.00 0.0
1907 2.2 -12.8 0.00 0.0
1906 0.0 -13.3 0.00 0.0
1905 6.1 -4.4 0.76 0.0
1904 -1.1 -10.0 0.25 2.5
1903 3.9 0.6 0.10 0.0
1902 -2.2 -10.0 0.00 0.0
1901 1.7 -12.8 0.38 3.8
1900 -7.8 -25.6 0.00 0.0
1899 -10.0 -18.3 1.40 14.0
1898 6.7 -1.1 0.00 0.0
1897 1.1 -10.6 0.00 0.0
1896 3.3 -7.2 0.00 0.0
1895 -2.8 -15.6 0.00 0.0
1894 7.8 0.6 0.00 0.0
1893 -8.3 -18.9 0.00 0.0
1892 -5.0 -12.2 0.00 0.0
1891 -1.1 -11.1 0.51 5.1
1890 2.2 -11.1 0.00 0.0
What's the all-time high for Ottawa on 3/18?
For the date of Mar 18, the highest temperature ever reached in Ottawa history is 24.7 °C which happened in 2012.
Highest Temperatures in Ottawa on March 18
Rank Temperature Year
1 24.7 °C 2012
2 15.6 °C 1966
3 14.7 °C 2010
4 13.5 °C 2009
5 12.8 °C 1945
6 11.0 °C 2022
7 10.0 °C 1968
8 9.4 °C 1946
9 9.0 °C 1983
10 8.7 °C 2011
What's the all-time low for Ottawa on 3/18?
For the date of Mar 18, the lowest temperature ever reached in Ottawa history is -27.2 °C which happened in 1916.
Lowest Temperatures in Ottawa on March 18
Rank Temperature Year
1 -27.2 °C 1916
2 -25.6 °C 1900
3 -22.8 °C 1940
4 -22.2 °C 1976
5 -21.7 °C 1967
6 -21.2 °C 1993
7 -20.6 °C 1941
8 -19.4 °C 1956
8 -19.4 °C 1910
10 -18.9 °C 1893
Lowest High Temperatures in Ottawa on March 18
Rank Temperature Year
1 -13.3 °C 1967
2 -11.1 °C 1916
3 -10.6 °C 1941
4 -10.0 °C 1899
5 -9.6 °C 1993
6 -9.4 °C 1944
7 -8.3 °C 1893
8 -7.8 °C 1900
9 -6.7 °C 1934
9 -6.7 °C 1949
9 -6.7 °C 1932
What's the most it has ever rained in Ottawa on 3/18?
For the date of Mar 18, the most precipitation ever recorded in Ottawa history is 2.18 cm which happened in 1983.
All-Time Most Precipitation in Ottawa on March 18
Rank Precipitation Year
1 2.18 cm 1983
2 1.46 cm 2008
3 1.40 cm 1899
4 1.27 cm 1948
5 1.24 cm 1927
6 1.14 cm 1928
7 0.94 cm 1976
8 0.88 cm 2002
8 0.88 cm 2013
10 0.76 cm 1905
All-Time Most Snow in Ottawa on March 18
Rank Precipitation Year
1 14.0 cm 1899
2 11.4 cm 1928
3 10.0 cm 2013
4 8.9 cm 1976
5 8.8 cm 2002
6 6.0 cm 2008
7 5.1 cm 1891
7 5.1 cm 1940
9 4.1 cm 1974
10 4.0 cm 1998
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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