San Jose August 18 Weather Records

Daily averages and all-time records for weather in San Jose, California for the date of August 18.
August 18 All-Time Records
1893–2024
Highest temperature 97 °F 2020
Lowest temperature 44 °F 1916
Lowest daily high 69 °F 1999
Highest daily low 70 °F 2020
Most precipitation 0.68 inches 1975
August 18 Average Weather
1991–2020 1
Average high 81.7 °F
Average low 58.9 °F
Chance precipitation 1.2%
San Jose August 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 86 64 0.00 n/a
2022 84 61 0.00 n/a
2021 78 59 0.00 n/a
2020 97 70 0.00 n/a
2019 79 60 0.00 n/a
2018 86 58 0.00 n/a
2017 83 61 0.00 n/a
2016 80 61 0.00 n/a
2015 81 58 0.00 n/a
2014 76 59 0.00 n/a
2013 91 58 0.00 0.0
2012 81 59 0.00 n/a
2011 79 57 0.00 n/a
2010 74 58 0.00 n/a
2009 79 59 0.00 n/a
2008 75 61 0.00 n/a
2007 78 55 0.00 n/a
2006 79 56 0.00 n/a
2005 75 56 0.00 n/a
2004 87 59 0.00 n/a
2003 83 60 0.00 n/a
2002 78 58 0.00 n/a
2001 80 55 0.00 n/a
2000 77 54 0.00 n/a
1999 69 58 0.00 n/a
1998 75 56 0.00 0.0
1997 78 61 0.00 0.0
1996 83 55 0.00 0.0
1995 87 54 0.00 0.0
1994 n/a 57 0.00 0.0
1993 84 59 0.00 0.0
1992 n/a n/a n/a n/a
1991 74 60 0.00 0.0
1990 77 62 0.00 0.0
1989 78 60 0.00 0.0
1988 90 58 0.00 0.0
1987 80 60 0.00 0.0
1986 86 57 0.00 0.0
1985 78 52 0.00 0.0
1984 88 61 0.00 0.0
1983 78 61 0.00 0.0
1982 78 56 0.00 0.0
1981 72 57 0.00 0.0
1980 78 56 0.00 0.0
1979 80 56 0.00 0.0
1978 90 57 0.00 0.0
1977 75 59 0.00 0.0
1976 70 58 0.23 0.0
1975 73 59 0.68 0.0
1974 80 51 0.00 0.0
1973 79 50 0.00 0.0
1972 79 55 0.00 0.0
1971 85 53 0.00 0.0
1970 78 58 0.00 0.0
1969 78 53 0.00 0.0
1968 79 58 0.00 0.0
1967 90 59 0.00 0.0
1966 91 61 0.00 0.0
1965 78 59 0.00 0.0
1964 84 54 0.00 0.0
1963 86 54 0.00 0.0
1962 82 55 0.00 0.0
1961 89 57 0.00 0.0
1960 90 59 0.00 0.0
1959 77 57 0.00 0.0
1958 79 62 0.00 0.0
1957 79 56 0.00 0.0
1956 77 54 0.00 0.0
1955 75 51 0.00 0.0
1954 80 52 0.00 0.0
1953 79 57 0.00 0.0
1952 85 51 0.00 0.0
1951 84 58 0.00 0.0
1950 93 59 0.00 0.0
1949 77 50 0.00 0.0
1948 77 58 0.00 0.0
1947 79 59 0.00 0.0
1946 79 56 0.00 0.0
1945 88 60 0.01 0.0
1944 78 50 0.00 0.0
1943 78 54 0.00 n/a
1942 81 56 0.00 0.0
1941 85 61 0.00 n/a
1940 83 55 0.00 n/a
1939 93 59 0.00 n/a
1938 77 57 0.00 n/a
1937 88 55 0.00 n/a
1936 85 53 0.00 n/a
1935 82 53 0.00 n/a
1934 97 51 0.00 n/a
1933 79 58 0.00 n/a
1932 88 48 0.00 0.0
1931 76 51 0.00 0.0
1930 76 56 0.00 n/a
1929 85 56 0.00 n/a
1928 77 53 0.00 n/a
1927 74 58 0.00 n/a
1926 79 57 0.00 n/a
1925 75 48 0.00 n/a
1924 77 58 0.00 n/a
1923 76 51 0.00 n/a
1922 74 53 0.00 n/a
1921 77 52 0.00 n/a
1920 83 54 0.00 n/a
1919 80 50 0.00 n/a
1918 80 48 0.00 n/a
1917 77 55 0.00 n/a
1916 79 44 0.00 n/a
1915 89 52 0.00 n/a
1914 76 52 0.00 n/a
1913 90 49 0.00 n/a
1912 82 52 0.00 n/a
1911 76 47 0.00 n/a
1910 75 50 0.00 n/a
1909 84 56 0.00 n/a
1908 75 55 0.00 n/a
1907 85 52 0.00 n/a
1906 83 52 0.00 n/a
1905 88 50 0.00 n/a
1904 81 55 0.00 n/a
1903 n/a 55 0.00 n/a
1902 n/a 46 0.00 n/a
1901 n/a n/a 0.00 n/a
1900 76 60 0.00 n/a
1899 n/a n/a 0.00 n/a
1898 n/a n/a n/a n/a
1897 n/a n/a n/a n/a
1896 86 50 0.00 n/a
1895 77 50 n/a n/a
1894 80 45 0.00 n/a
1893 74 45 0.00 n/a
What's the all-time high for San Jose on 8/18?
For the date of Aug 18, the highest temperature ever reached in San Jose history is 97 °F which has happened 2 times, most recently in 2020.
Highest Temperatures in San Jose on August 18
Rank Temperature Year
1 97 °F 2020
1 97 °F 1934
3 93 °F 1939
3 93 °F 1950
5 91 °F 1966
5 91 °F 2013
7 90 °F 1978
7 90 °F 1967
7 90 °F 1988
7 90 °F 1960
7 90 °F 1913
What's the all-time low for San Jose on 8/18?
For the date of Aug 18, the lowest temperature ever reached in San Jose history is 44 °F which happened in 1916.
Lowest Temperatures in San Jose on August 18
Rank Temperature Year
1 44 °F 1916
2 45 °F 1894
2 45 °F 1893
4 46 °F 1902
5 47 °F 1911
6 48 °F 1918
6 48 °F 1932
6 48 °F 1925
9 49 °F 1913
10 50 °F 1910
10 50 °F 1944
10 50 °F 1919
10 50 °F 1973
10 50 °F 1895
10 50 °F 1949
10 50 °F 1896
10 50 °F 1905
Lowest High Temperatures in San Jose on August 18
Rank Temperature Year
1 69 °F 1999
2 70 °F 1976
3 72 °F 1981
4 73 °F 1975
5 74 °F 1922
5 74 °F 2010
5 74 °F 1927
5 74 °F 1991
5 74 °F 1893
10 75 °F 1977
10 75 °F 1908
10 75 °F 2008
10 75 °F 1925
10 75 °F 1998
10 75 °F 1955
10 75 °F 2005
10 75 °F 1910
What's the most it has ever rained in San Jose on 8/18?
For the date of Aug 18, the most precipitation ever recorded in San Jose history is 0.68 inches which happened in 1975.
All-Time Most Precipitation in San Jose on August 18
Rank Precipitation Year
1 0.68 inches 1975
2 0.23 inches 1976
3 0.01 inches 1945
Weather Station Details
Years Station Coordinates
1999–2024 San Jose 2 location
1893–1998 San Jose location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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