San Jose September 30 Weather Records

Daily averages and all-time records for weather in San Jose, California for the date of September 30.
September 30 All-Time Records
1893–2024
Highest temperature 95 °F 2001
Lowest temperature 35 °F 1893
Lowest daily high 60 °F 1894
Highest daily low 62 °F 2020
Most precipitation 0.69 inches 1894
September 30 Average Weather
1991–2020 1
Average high 79.3 °F
Average low 55.6 °F
Chance precipitation 4.5%
San Jose September 30 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 69 59 0.08 n/a
2022 89 59 0.00 n/a
2021 87 53 0.00 n/a
2020 87 62 0.00 n/a
2019 68 51 0.00 n/a
2018 79 57 0.00 n/a
2017 80 58 0.00 n/a
2016 70 56 0.00 n/a
2015 65 59 0.01 n/a
2014 76 54 0.00 n/a
2013 77 57 0.00 n/a
2012 90 54 0.00 n/a
2011 76 60 0.00 n/a
2010 81 60 0.00 n/a
2009 73 46 0.00 n/a
2008 80 56 0.00 n/a
2007 80 46 0.00 n/a
2006 67 57 0.00 n/a
2005 88 57 0.00 n/a
2004 68 55 0.00 n/a
2003 77 55 0.00 n/a
2002 72 56 0.00 n/a
2001 95 55 0.00 n/a
2000 90 58 0.00 n/a
1999 91 61 0.00 n/a
1998 73 58 0.00 0.0
1997 88 59 0.00 0.0
1996 n/a 57 0.00 0.0
1995 82 53 0.00 0.0
1994 80 59 0.00 0.0
1993 80 59 0.00 0.0
1992 87 59 0.00 0.0
1991 79 60 0.00 0.0
1990 88 57 0.00 0.0
1989 76 54 0.00 0.0
1988 92 58 0.00 0.0
1987 84 59 0.00 0.0
1986 n/a n/a 0.00 0.0
1985 72 57 0.00 0.0
1984 68 58 0.02 0.0
1983 71 56 0.49 0.0
1982 75 47 0.00 0.0
1981 84 50 0.00 0.0
1980 89 56 0.00 0.0
1979 85 59 0.00 0.0
1978 93 60 0.00 0.0
1977 77 53 0.00 0.0
1976 75 59 0.27 0.0
1975 74 53 0.00 0.0
1974 86 50 0.00 0.0
1973 79 51 0.00 0.0
1972 85 57 0.00 0.0
1971 66 48 0.12 0.0
1970 87 53 0.00 0.0
1969 80 55 0.00 0.0
1968 75 51 0.00 0.0
1967 73 57 0.00 0.0
1966 83 61 0.00 0.0
1965 89 50 0.00 0.0
1964 77 46 0.00 0.0
1963 79 53 0.00 0.0
1962 83 53 0.00 0.0
1961 85 49 0.00 0.0
1960 70 58 0.00 0.0
1959 n/a 50 0.00 0.0
1958 86 57 0.00 0.0
1957 77 55 0.00 0.0
1956 n/a n/a n/a n/a
1955 77 50 0.00 0.0
1954 74 48 0.00 0.0
1953 73 47 0.00 0.0
1952 93 51 0.00 0.0
1951 77 58 0.00 0.0
1950 73 42 0.00 0.0
1949 83 51 0.00 0.0
1948 82 49 0.00 0.0
1947 66 56 0.00 0.0
1946 86 56 0.00 0.0
1945 85 51 0.00 0.0
1944 72 54 0.00 0.0
1943 85 54 0.00 n/a
1942 75 52 0.00 0.0
1941 86 50 0.00 n/a
1940 85 52 0.00 n/a
1939 77 49 0.11 n/a
1938 80 55 0.00 n/a
1937 69 55 0.00 n/a
1936 78 50 0.00 0.0
1935 83 54 0.00 n/a
1934 90 51 0.00 n/a
1933 92 50 0.00 0.0
1932 77 55 0.00 0.0
1931 86 47 0.00 0.0
1930 61 46 0.02 n/a
1929 70 48 0.00 n/a
1928 72 50 0.00 n/a
1927 78 51 0.00 n/a
1926 75 45 0.00 n/a
1925 78 39 0.00 n/a
1924 77 43 0.00 n/a
1923 88 52 0.00 n/a
1922 81 48 0.00 n/a
1921 76 53 0.00 n/a
1920 71 55 0.00 n/a
1919 69 49 0.00 n/a
1918 79 55 0.00 n/a
1917 81 53 0.00 n/a
1916 71 57 0.18 n/a
1915 88 51 0.00 n/a
1914 70 51 0.00 n/a
1913 84 46 0.00 n/a
1912 75 50 0.00 n/a
1911 67 48 0.00 n/a
1910 89 47 0.00 n/a
1909 70 43 0.00 n/a
1908 81 50 0.00 n/a
1907 80 44 0.00 n/a
1906 82 47 0.00 n/a
1905 75 47 0.00 n/a
1904 89 61 0.00 n/a
1903 66 53 0.00 n/a
1902 n/a n/a 0.00 n/a
1901 74 52 0.00 n/a
1900 77 56 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 74 50 0.00 n/a
1895 74 51 0.00 n/a
1894 60 40 0.69 n/a
1893 74 35 0.00 n/a
What's the all-time high for San Jose on 9/30?
For the date of Sep 30, the highest temperature ever reached in San Jose history is 95 °F which happened in 2001.
Highest Temperatures in San Jose on September 30
Rank Temperature Year
1 95 °F 2001
2 93 °F 1978
2 93 °F 1952
4 92 °F 1933
4 92 °F 1988
6 91 °F 1999
7 90 °F 2000
7 90 °F 1934
7 90 °F 2012
10 89 °F 1965
10 89 °F 2022
10 89 °F 1980
10 89 °F 1904
10 89 °F 1910
What's the all-time low for San Jose on 9/30?
For the date of Sep 30, the lowest temperature ever reached in San Jose history is 35 °F which happened in 1893.
Lowest Temperatures in San Jose on September 30
Rank Temperature Year
1 35 °F 1893
2 39 °F 1925
3 40 °F 1894
4 42 °F 1950
5 43 °F 1909
5 43 °F 1924
7 44 °F 1907
8 45 °F 1926
9 46 °F 1930
9 46 °F 1964
9 46 °F 1913
9 46 °F 2009
9 46 °F 2007
Lowest High Temperatures in San Jose on September 30
Rank Temperature Year
1 60 °F 1894
2 61 °F 1930
3 65 °F 2015
4 66 °F 1971
4 66 °F 1947
4 66 °F 1903
7 67 °F 2006
7 67 °F 1911
9 68 °F 2004
9 68 °F 1984
9 68 °F 2019
What's the most it has ever rained in San Jose on 9/30?
For the date of Sep 30, the most precipitation ever recorded in San Jose history is 0.69 inches which happened in 1894.
All-Time Most Precipitation in San Jose on September 30
Rank Precipitation Year
1 0.69 inches 1894
2 0.49 inches 1983
3 0.27 inches 1976
4 0.18 inches 1916
5 0.12 inches 1971
6 0.11 inches 1939
7 0.08 inches 2023
8 0.02 inches 1984
8 0.02 inches 1930
10 0.01 inches 2015
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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