Ottawa August 12 Weather Records

Daily averages and all-time records for weather in Ottawa, Ontario for the date of August 12.
August 12 All-Time Records
1889–2024
Highest temperature 34.4 °C 1947
Lowest temperature 3.3 °C 1930
Lowest daily high 16.7 °C 1941
Highest daily low 22.0 °C 2021
Most precipitation 4.98 cm 2014
Most snow none -
August 12 Average Weather
1991–2020 1
Average high 26.0 °C
Average low 15.0 °C
Chance precipitation 37.5%
Chance snow 0%
Ottawa August 12 Weather by Year
Year High (°C) Low (°C) Precip. (cm) Snow (cm)
2023 24.0 14.0 1.10 0.0
2022 23.0 12.0 0.00 0.0
2021 31.0 22.0 0.00 0.0
2020 30.0 19.5 0.00 0.0
2019 28.5 16.0 0.46 0.0
2018 28.5 14.5 0.00 0.0
2017 24.0 14.5 1.50 0.0
2016 25.5 19.0 0.76 0.0
2015 21.3 17.0 0.00 0.0
2014 22.2 16.9 4.98 0.0
2013 25.5 13.7 1.12 0.0
2012 27.0 17.7 1.54 0.0
2011 28.4 11.7 0.00 0.0
2010 25.6 16.1 0.00 0.0
2009 27.6 15.3 0.00 0.0
2008 23.0 14.0 0.00 0.0
2007 31.2 17.8 0.00 0.0
2006 21.5 8.4 0.00 0.0
2005 23.2 18.2 0.28 0.0
2004 22.6 13.0 0.48 0.0
2003 29.0 20.0 0.00 0.0
2002 33.8 17.6 0.00 0.0
2001 30.2 16.6 0.00 0.0
2000 26.1 16.1 0.00 0.0
1999 26.9 13.4 0.00 0.0
1998 24.8 14.2 0.00 0.0
1997 23.8 10.3 0.64 0.0
1996 24.7 10.6 0.00 0.0
1995 27.7 21.4 0.00 0.0
1994 25.0 11.4 0.00 0.0
1993 27.3 17.5 0.00 0.0
1992 18.3 8.3 0.00 0.0
1991 29.8 14.0 0.00 0.0
1990 24.0 16.8 0.64 0.0
1989 25.6 18.9 0.00 0.0
1988 31.1 19.3 0.00 0.0
1987 25.3 9.6 0.00 0.0
1986 21.5 10.2 0.00 0.0
1985 24.2 10.0 0.00 0.0
1984 25.6 18.1 1.35 0.0
1983 23.5 14.5 0.00 0.0
1982 19.5 12.0 0.00 0.0
1981 25.0 13.5 0.00 0.0
1980 23.5 17.0 0.00 0.0
1979 19.5 10.5 0.00 0.0
1978 27.5 15.5 0.00 0.0
1977 24.5 14.0 0.00 0.0
1976 27.2 16.7 0.56 0.0
1975 30.0 15.6 0.00 0.0
1974 23.9 13.9 0.03 0.0
1973 25.0 17.2 0.00 0.0
1972 22.8 14.4 0.08 0.0
1971 22.2 11.1 0.10 0.0
1970 30.6 18.3 0.00 0.0
1969 25.6 11.7 0.00 0.0
1968 23.9 9.4 0.00 0.0
1967 26.1 15.0 0.00 0.0
1966 21.7 15.6 0.03 0.0
1965 26.1 14.4 0.94 0.0
1964 24.4 18.3 0.25 0.0
1963 22.8 9.4 0.00 0.0
1962 26.1 10.6 0.00 0.0
1961 25.0 12.8 0.53 0.0
1960 28.9 11.7 0.00 0.0
1959 28.9 14.4 0.00 0.0
1958 28.9 13.3 0.00 0.0
1957 17.2 11.1 0.00 0.0
1956 25.0 16.1 0.00 0.0
1955 27.2 15.6 0.00 0.0
1954 21.1 12.2 0.05 0.0
1953 27.8 12.8 0.00 0.0
1952 24.4 16.1 0.00 0.0
1951 26.1 13.3 0.00 0.0
1950 23.3 5.0 0.00 0.0
1949 28.3 16.7 0.00 0.0
1948 25.0 15.6 0.48 0.0
1947 34.4 18.3 0.00 0.0
1946 20.6 6.1 0.05 0.0
1945 26.1 13.9 0.05 0.0
1944 33.9 21.7 0.00 0.0
1943 28.3 14.4 0.71 0.0
1942 25.6 11.1 0.00 0.0
1941 16.7 11.1 0.00 0.0
1940 30.6 16.7 0.53 0.0
1939 30.6 14.4 1.73 0.0
1938 24.4 13.3 0.25 0.0
1937 28.9 18.3 0.66 0.0
1936 28.9 6.7 0.00 0.0
1935 31.7 16.1 0.15 0.0
1934 21.1 10.6 0.00 0.0
1933 29.4 16.7 0.53 0.0
1932 23.3 11.7 0.00 0.0
1931 26.7 15.6 0.00 0.0
1930 17.8 3.3 0.00 0.0
1929 23.9 13.9 0.00 0.0
1928 24.4 7.8 0.00 0.0
1927 23.9 9.4 0.00 0.0
1926 25.6 15.6 n/a 0.0
1925 25.0 11.1 0.00 0.0
1924 23.3 5.0 0.00 0.0
1923 27.8 14.4 0.13 0.0
1922 28.3 11.1 0.00 0.0
1921 23.3 15.0 1.42 0.0
1920 30.6 17.2 0.00 0.0
1919 26.7 10.6 0.00 0.0
1918 29.4 16.1 0.00 0.0
1917 30.0 12.8 0.00 0.0
1916 25.0 18.3 0.08 0.0
1915 30.0 15.6 0.13 0.0
1914 23.9 8.3 0.00 0.0
1913 27.2 10.0 0.00 0.0
1912 25.6 18.3 0.81 0.0
1911 26.7 11.1 0.00 0.0
1910 27.8 12.8 0.00 0.0
1909 28.3 9.4 0.00 0.0
1908 27.8 13.3 0.25 0.0
1907 31.1 18.9 0.51 0.0
1906 28.3 8.9 0.00 0.0
1905 29.4 17.2 2.21 0.0
1904 26.1 10.6 0.00 0.0
1903 20.6 12.8 0.00 0.0
1902 22.2 8.9 0.00 0.0
1901 32.2 13.3 0.00 0.0
1900 20.6 8.9 0.00 0.0
1899 28.9 16.1 0.05 0.0
1898 26.7 18.9 1.02 0.0
1897 21.1 13.3 0.00 0.0
1896 30.0 20.0 0.00 0.0
1895 26.1 13.3 0.53 0.0
1894 21.1 12.2 0.38 0.0
1893 31.7 15.0 0.00 0.0
1892 18.3 14.4 0.15 0.0
1891 27.2 18.3 0.00 0.0
1890 27.2 12.2 0.00 0.0
What's the all-time high for Ottawa on 8/12?
For the date of Aug 12, the highest temperature ever reached in Ottawa history is 34.4 °C which happened in 1947.
Highest Temperatures in Ottawa on August 12
Rank Temperature Year
1 34.4 °C 1947
2 33.9 °C 1944
3 33.8 °C 2002
4 32.2 °C 1901
5 31.7 °C 1935
5 31.7 °C 1893
7 31.2 °C 2007
8 31.1 °C 1907
8 31.1 °C 1988
10 31.0 °C 2021
What's the all-time low for Ottawa on 8/12?
For the date of Aug 12, the lowest temperature ever reached in Ottawa history is 3.3 °C which happened in 1930.
Lowest Temperatures in Ottawa on August 12
Rank Temperature Year
1 3.3 °C 1930
2 5.0 °C 1950
2 5.0 °C 1924
4 6.1 °C 1946
5 6.7 °C 1936
6 7.8 °C 1928
7 8.3 °C 1992
7 8.3 °C 1914
9 8.4 °C 2006
10 8.9 °C 1902
10 8.9 °C 1906
10 8.9 °C 1900
Lowest High Temperatures in Ottawa on August 12
Rank Temperature Year
1 16.7 °C 1941
2 17.2 °C 1957
3 17.8 °C 1930
4 18.3 °C 1992
4 18.3 °C 1892
6 19.5 °C 1979
6 19.5 °C 1982
8 20.6 °C 1903
8 20.6 °C 1946
8 20.6 °C 1900
What's the most it has ever rained in Ottawa on 8/12?
For the date of Aug 12, the most precipitation ever recorded in Ottawa history is 4.98 cm which happened in 2014.
All-Time Most Precipitation in Ottawa on August 12
Rank Precipitation Year
1 4.98 cm 2014
2 2.21 cm 1905
3 1.73 cm 1939
4 1.54 cm 2012
5 1.50 cm 2017
6 1.42 cm 1921
7 1.35 cm 1984
8 1.12 cm 2013
9 1.10 cm 2023
10 1.02 cm 1898
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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