San Luis Obispo June 18 Weather Records

Daily averages and all-time records for weather in San Luis Obispo, California for the date of June 18.
June 18 All-Time Records
1893–2024
Highest temperature 100 °F 2008
Lowest temperature 40 °F 1933
Lowest daily high 60 °F 1949
Highest daily low 68 °F 1981
Most precipitation 0.04 inches 1949
June 18 Average Weather
1991–2020 1
Average high 76.2 °F
Average low 51.6 °F
Chance precipitation 3.0%
San Luis Obispo June 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 72 56 0.00 n/a
2022 74 46 0.00 n/a
2021 82 56 0.00 n/a
2020 74 49 0.00 0.0
2019 72 53 0.00 n/a
2018 71 46 0.00 0.0
2017 87 59 0.00 0.0
2016 82 57 0.00 0.0
2015 78 51 0.00 0.0
2014 77 46 0.00 0.0
2013 71 51 0.00 0.0
2012 73 54 0.00 0.0
2011 72 54 0.00 n/a
2010 65 46 0.00 n/a
2009 81 57 0.00 n/a
2008 100 54 0.00 n/a
2007 70 52 0.00 n/a
2006 74 51 0.00 n/a
2005 72 49 0.00 n/a
2004 73 56 0.00 n/a
2003 78 50 0.00 n/a
2002 83 54 0.00 n/a
2001 83 45 0.00 n/a
2000 76 57 0.00 n/a
1999 74 50 0.00 n/a
1998 75 52 0.00 0.0
1997 82 54 0.00 0.0
1996 74 50 0.00 0.0
1995 69 50 0.00 0.0
1994 71 49 0.00 0.0
1993 72 53 0.00 0.0
1992 71 47 0.00 0.0
1991 84 50 0.00 0.0
1990 73 52 0.00 0.0
1989 91 54 0.00 0.0
1988 70 46 0.00 0.0
1987 70 45 0.00 0.0
1986 n/a n/a n/a n/a
1985 77 55 0.00 0.0
1984 72 52 0.00 0.0
1983 78 46 0.00 0.0
1982 67 55 0.00 0.0
1981 98 68 0.00 0.0
1980 69 49 0.00 0.0
1979 65 42 0.00 0.0
1978 74 43 0.00 0.0
1977 68 51 0.00 0.0
1976 74 53 0.00 0.0
1975 65 49 0.00 0.0
1974 73 50 0.00 0.0
1973 75 52 0.00 0.0
1972 72 51 0.00 0.0
1971 82 49 0.00 0.0
1970 66 47 0.00 0.0
1969 69 58 0.00 0.0
1968 75 50 0.00 0.0
1967 64 52 0.03 0.0
1966 74 48 0.00 0.0
1965 70 47 0.00 0.0
1964 73 48 0.00 0.0
1963 76 53 0.00 0.0
1962 72 51 0.00 0.0
1961 81 53 0.00 0.0
1960 73 54 0.00 0.0
1959 86 50 0.00 0.0
1958 72 53 0.00 0.0
1957 98 58 0.00 0.0
1956 84 49 0.00 0.0
1955 83 55 0.00 0.0
1954 71 49 0.00 0.0
1953 64 53 0.00 0.0
1952 86 50 0.00 0.0
1951 70 54 0.00 0.0
1950 68 49 0.00 0.0
1949 60 54 0.04 0.0
1948 68 47 0.00 0.0
1947 87 53 0.00 0.0
1946 88 51 0.00 0.0
1945 76 49 0.00 0.0
1944 71 45 0.00 0.0
1943 85 52 0.00 n/a
1942 85 53 0.00 n/a
1941 76 52 0.00 n/a
1940 73 50 0.00 n/a
1939 84 47 0.00 n/a
1938 77 45 0.00 n/a
1937 83 53 0.00 n/a
1936 81 61 n/a n/a
1935 78 48 0.00 n/a
1934 72 56 0.00 n/a
1933 68 40 0.00 n/a
1932 80 46 0.00 n/a
1931 72 50 0.00 n/a
1930 69 52 0.00 n/a
1929 88 52 0.00 n/a
1928 72 46 0.00 n/a
1927 n/a n/a n/a 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 n/a n/a
1908 n/a n/a n/a n/a
1907 n/a n/a 0.00 0.0
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 6/18?
For the date of Jun 18, the highest temperature ever reached in San Luis Obispo history is 100 °F which happened in 2008.
Highest Temperatures in San Luis Obispo on June 18
Rank Temperature Year
1 100 °F 2008
2 98 °F 1957
2 98 °F 1981
4 91 °F 1989
5 88 °F 1929
5 88 °F 1946
7 87 °F 2017
7 87 °F 1947
9 86 °F 1959
9 86 °F 1952
What's the all-time low for San Luis Obispo on 6/18?
For the date of Jun 18, the lowest temperature ever reached in San Luis Obispo history is 40 °F which happened in 1933.
Lowest Temperatures in San Luis Obispo on June 18
Rank Temperature Year
1 40 °F 1933
2 42 °F 1979
3 43 °F 1978
4 45 °F 2001
4 45 °F 1944
4 45 °F 1938
4 45 °F 1987
8 46 °F 2018
8 46 °F 1988
8 46 °F 1983
8 46 °F 1928
8 46 °F 1932
8 46 °F 2014
8 46 °F 2010
8 46 °F 2022
Lowest High Temperatures in San Luis Obispo on June 18
Rank Temperature Year
1 60 °F 1949
2 64 °F 1967
2 64 °F 1953
4 65 °F 2010
4 65 °F 1975
4 65 °F 1979
7 66 °F 1970
8 67 °F 1982
9 68 °F 1977
9 68 °F 1950
9 68 °F 1948
9 68 °F 1933
What's the most it has ever rained in San Luis Obispo on 6/18?
For the date of Jun 18, the most precipitation ever recorded in San Luis Obispo history is 0.04 inches which happened in 1949.
All-Time Most Precipitation in San Luis Obispo on June 18
Rank Precipitation Year
1 0.04 inches 1949
2 0.03 inches 1967
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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