San Luis Obispo October 31 Weather Records

Daily averages and all-time records for weather in San Luis Obispo, California for the date of October 31 (Halloween).
October 31 All-Time Records
1893–2024
Highest temperature 95 °F 2015
Lowest temperature 33 °F 2019
Lowest daily high 57 °F 2003
Highest daily low 67 °F 1966
Most precipitation 1.29 inches 1927
October 31 Average Weather
1991–2020 1
Average high 75.2 °F
Average low 48.3 °F
Chance precipitation 16.1%
San Luis Obispo October 31 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 87 44 0.00 n/a
2022 73 43 0.00 n/a
2021 69 52 0.00 n/a
2020 89 42 0.00 0.0
2019 76 33 0.00 0.0
2018 83 52 0.00 0.0
2017 68 56 0.00 0.0
2016 72 48 0.00 0.0
2015 95 56 0.00 0.0
2014 69 55 1.01 0.0
2013 80 46 0.00 0.0
2012 65 49 0.00 0.0
2011 77 43 0.00 0.0
2010 70 46 0.00 n/a
2009 83 45 0.00 n/a
2008 72 60 0.01 n/a
2007 75 50 0.00 n/a
2006 64 45 0.00 n/a
2005 89 54 0.00 n/a
2004 71 48 0.00 n/a
2003 57 38 0.32 n/a
2002 62 44 0.00 n/a
2001 73 52 0.00 n/a
2000 67 43 0.00 n/a
1999 92 44 0.00 n/a
1998 71 42 0.00 0.0
1997 84 60 n/a n/a
1996 61 45 0.05 0.0
1995 71 54 0.02 0.0
1994 77 49 0.00 0.0
1993 77 47 0.00 0.0
1992 68 51 0.03 0.0
1991 72 40 0.00 0.0
1990 n/a n/a n/a n/a
1989 79 53 n/a n/a
1988 81 54 0.00 0.0
1987 70 50 0.15 0.0
1986 74 51 0.00 0.0
1985 64 46 0.00 0.0
1984 60 44 0.00 0.0
1983 74 59 0.01 0.0
1982 63 50 0.22 0.0
1981 72 45 0.00 0.0
1980 87 51 0.00 0.0
1979 74 47 0.00 0.0
1978 69 39 0.00 0.0
1977 72 53 0.00 0.0
1976 77 43 0.00 0.0
1975 61 48 0.31 0.0
1974 62 45 0.02 0.0
1973 86 53 0.00 0.0
1972 66 41 0.00 0.0
1971 64 33 0.00 0.0
1970 68 40 0.00 0.0
1969 88 50 0.00 0.0
1968 66 48 0.00 0.0
1967 84 54 0.00 0.0
1966 94 67 0.00 0.0
1965 78 43 0.00 0.0
1964 71 52 0.00 0.0
1963 70 52 0.00 0.0
1962 89 51 0.00 0.0
1961 n/a n/a n/a n/a
1960 72 45 0.00 0.0
1959 72 44 0.00 0.0
1958 77 43 0.00 0.0
1957 84 43 0.00 0.0
1956 63 46 0.09 0.0
1955 79 48 0.00 0.0
1954 70 44 0.00 0.0
1953 n/a 44 0.00 0.0
1952 67 48 0.00 0.0
1951 63 48 0.00 0.0
1950 70 52 0.15 0.0
1949 89 48 0.00 0.0
1948 63 44 0.00 0.0
1947 79 49 0.00 0.0
1946 70 41 0.00 0.0
1945 68 55 0.24 0.0
1944 70 54 0.00 0.0
1943 70 47 0.00 0.0
1942 70 50 0.00 n/a
1941 75 48 0.00 n/a
1940 76 52 n/a n/a
1939 73 45 n/a n/a
1938 63 56 0.20 n/a
1937 73 54 n/a n/a
1936 62 46 0.72 n/a
1935 62 43 0.00 n/a
1934 64 51 0.74 n/a
1933 64 45 0.00 n/a
1932 78 41 n/a n/a
1931 75 46 0.00 n/a
1930 91 64 0.00 n/a
1929 79 41 0.00 n/a
1928 78 48 0.00 n/a
1927 61 53 1.29 n/a
1926 n/a n/a n/a n/a
1925 n/a n/a n/a n/a
1924 n/a n/a n/a n/a
1923 n/a n/a n/a n/a
1922 n/a n/a n/a n/a
1921 n/a n/a n/a n/a
1920 n/a n/a n/a n/a
1919 n/a n/a n/a n/a
1918 n/a n/a n/a n/a
1917 n/a n/a n/a n/a
1916 n/a n/a n/a n/a
1915 n/a n/a n/a n/a
1914 n/a n/a n/a n/a
1913 n/a n/a n/a n/a
1912 n/a n/a n/a n/a
1911 n/a n/a n/a n/a
1910 n/a n/a n/a n/a
1909 n/a n/a 0.00 n/a
1908 n/a n/a 0.00 n/a
1907 n/a n/a 0.00 n/a
1906 n/a n/a 0.00 0.0
1905 n/a n/a n/a n/a
1904 n/a n/a n/a n/a
1903 n/a n/a n/a n/a
1902 n/a n/a n/a n/a
1901 n/a n/a n/a n/a
1900 n/a n/a n/a n/a
1899 n/a n/a n/a n/a
1898 n/a n/a n/a n/a
1897 n/a n/a n/a n/a
1896 n/a n/a n/a n/a
1895 n/a n/a 0.00 n/a
1894 n/a n/a 0.00 n/a
1893 n/a n/a 0.00 n/a
What's the all-time high for San Luis Obispo on 10/31?
For the date of Oct 31, the highest temperature ever reached in San Luis Obispo history is 95 °F which happened in 2015.
Highest Temperatures in San Luis Obispo on October 31
Rank Temperature Year
1 95 °F 2015
2 94 °F 1966
3 92 °F 1999
4 91 °F 1930
5 89 °F 2005
5 89 °F 1962
5 89 °F 1949
5 89 °F 2020
9 88 °F 1969
10 87 °F 1980
10 87 °F 2023
What's the all-time low for San Luis Obispo on 10/31?
For the date of Oct 31, the lowest temperature ever reached in San Luis Obispo history is 33 °F which has happened 2 times, most recently in 2019.
Lowest Temperatures in San Luis Obispo on October 31
Rank Temperature Year
1 33 °F 1971
1 33 °F 2019
3 38 °F 2003
4 39 °F 1978
5 40 °F 1970
5 40 °F 1991
7 41 °F 1929
7 41 °F 1932
7 41 °F 1972
7 41 °F 1946
Lowest High Temperatures in San Luis Obispo on October 31
Rank Temperature Year
1 57 °F 2003
2 60 °F 1984
3 61 °F 1927
3 61 °F 1975
3 61 °F 1996
6 62 °F 2002
6 62 °F 1935
6 62 °F 1974
6 62 °F 1936
10 63 °F 1956
10 63 °F 1938
10 63 °F 1948
10 63 °F 1951
10 63 °F 1982
What's the most it has ever rained in San Luis Obispo on 10/31?
For the date of Oct 31, the most precipitation ever recorded in San Luis Obispo history is 1.29 inches which happened in 1927.
All-Time Most Precipitation in San Luis Obispo on October 31
Rank Precipitation Year
1 1.29 inches 1927
2 1.01 inches 2014
3 0.74 inches 1934
4 0.72 inches 1936
5 0.32 inches 2003
6 0.31 inches 1975
7 0.24 inches 1945
8 0.22 inches 1982
9 0.20 inches 1938
10 0.15 inches 1950
10 0.15 inches 1987
Weather Station Details
Years Station Coordinates
1999–2024 San Luis Obispo Airport location
1893–1998 San Luis Obispo Poly location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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