Livermore September 18 Weather Records

Daily averages and all-time records for weather in Livermore, California for the date of September 18.
September 18 All-Time Records
1903–2024
Highest temperature 111 °F 1913
Lowest temperature 41 °F 1978
Lowest daily high 66 °F 2004
Highest daily low 69 °F 1912
Most precipitation 0.36 inches 1959
September 18 Average Weather
1991–2020 1
Average high 85.2 °F
Average low 55.1 °F
Chance precipitation 2.2%
Livermore September 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 78 59 0.00 n/a
2022 n/a 62 0.31 n/a
2021 75 53 0.00 n/a
2020 81 61 0.00 n/a
2019 76 56 0.00 n/a
2018 79 49 0.00 n/a
2017 77 59 0.00 n/a
2016 100 55 0.00 n/a
2015 89 54 0.00 n/a
2014 82 63 0.00 n/a
2013 87 54 0.00 n/a
2012 78 53 0.00 n/a
2011 93 52 0.00 n/a
2010 75 58 0.00 n/a
2009 99 59 0.00 n/a
2008 74 50 0.00 n/a
2007 78 55 0.00 n/a
2006 92 55 0.00 n/a
2005 83 46 0.00 n/a
2004 66 54 0.00 n/a
2003 92 51 0.00 n/a
2002 90 53 0.00 n/a
2001 82 55 0.00 n/a
2000 101 59 0.00 n/a
1999 76 54 0.00 n/a
1998 79 55 0.00 0.0
1997 81 59 0.00 0.0
1996 83 53 0.00 0.0
1995 97 56 0.00 0.0
1994 89 54 0.00 0.0
1993 79 51 0.00 0.0
1992 91 53 0.00 0.0
1991 97 55 0.00 0.0
1990 81 57 0.00 0.0
1989 67 54 0.30 0.0
1988 85 46 0.00 0.0
1987 87 52 0.00 0.0
1986 72 45 0.00 0.0
1985 80 49 0.00 0.0
1984 97 65 0.00 0.0
1983 90 52 0.00 0.0
1982 74 55 0.09 0.0
1981 80 55 0.00 0.0
1980 80 55 0.00 0.0
1979 85 53 0.00 0.0
1978 79 41 0.00 0.0
1977 81 44 0.00 0.0
1976 86 48 0.00 0.0
1975 83 50 0.00 0.0
1974 96 48 0.00 0.0
1973 78 48 0.00 0.0
1972 76 55 0.00 0.0
1971 93 51 0.00 0.0
1970 95 58 0.00 0.0
1969 81 62 0.00 0.0
1968 96 57 0.00 0.0
1967 78 60 0.02 0.0
1966 90 57 0.00 0.0
1965 75 41 0.00 0.0
1964 73 46 0.00 0.0
1963 75 52 0.00 0.0
1962 89 55 0.00 0.0
1961 72 47 0.00 0.0
1960 89 47 0.00 0.0
1959 78 46 0.36 0.0
1958 89 52 0.00 0.0
1957 76 55 0.00 0.0
1956 93 50 0.00 0.0
1955 77 44 0.00 0.0
1954 84 43 0.00 0.0
1953 82 58 0.00 0.0
1952 95 50 0.00 0.0
1951 89 53 0.00 0.0
1950 69 55 0.02 0.0
1949 95 48 0.00 0.0
1948 79 51 0.00 0.0
1947 73 n/a 0.00 0.0
1946 91 46 0.00 0.0
1945 86 59 0.00 0.0
1944 80 44 0.00 0.0
1943 92 48 0.00 n/a
1942 86 47 0.00 n/a
1941 74 54 0.00 n/a
1940 75 57 0.02 n/a
1939 103 51 0.00 n/a
1938 81 55 0.00 n/a
1937 80 51 0.00 n/a
1936 100 52 0.00 n/a
1935 93 54 0.00 0.0
1934 90 55 0.00 n/a
1933 85 47 0.00 n/a
1932 82 53 0.00 n/a
1931 72 59 0.00 n/a
1930 82 58 0.00 0.0
1929 84 55 0.00 n/a
1928 96 50 0.00 n/a
1927 75 50 0.00 n/a
1926 71 43 0.00 n/a
1925 70 60 0.00 n/a
1924 85 50 0.00 n/a
1923 79 55 0.00 n/a
1922 99 51 0.00 n/a
1921 73 55 0.03 n/a
1920 77 51 0.00 n/a
1919 95 54 0.00 n/a
1918 80 55 0.00 n/a
1917 101 47 0.00 n/a
1916 78 44 0.00 n/a
1915 101 51 0.00 n/a
1914 79 53 0.00 n/a
1913 111 58 0.00 n/a
1912 99 69 0.00 n/a
1911 88 53 0.00 n/a
1910 79 44 0.00 n/a
1909 96 52 0.00 n/a
1908 89 43 0.00 n/a
1907 n/a n/a n/a n/a
1906 99 49 0.00 n/a
1905 93 49 0.00 n/a
1904 79 58 0.00 n/a
1903 88 51 0.00 n/a
What's the all-time high for Livermore on 9/18?
For the date of Sep 18, the highest temperature ever reached in Livermore history is 111 °F which happened in 1913.
Highest Temperatures in Livermore on September 18
Rank Temperature Year
1 111 °F 1913
2 103 °F 1939
3 101 °F 1917
3 101 °F 1915
3 101 °F 2000
6 100 °F 1936
6 100 °F 2016
8 99 °F 1922
8 99 °F 1912
8 99 °F 2009
8 99 °F 1906
What's the all-time low for Livermore on 9/18?
For the date of Sep 18, the lowest temperature ever reached in Livermore history is 41 °F which has happened 2 times, most recently in 1978.
Lowest Temperatures in Livermore on September 18
Rank Temperature Year
1 41 °F 1978
1 41 °F 1965
3 43 °F 1908
3 43 °F 1926
3 43 °F 1954
6 44 °F 1944
6 44 °F 1910
6 44 °F 1977
6 44 °F 1916
6 44 °F 1955
Lowest High Temperatures in Livermore on September 18
Rank Temperature Year
1 66 °F 2004
2 67 °F 1989
3 69 °F 1950
4 70 °F 1925
5 71 °F 1926
6 72 °F 1931
6 72 °F 1986
6 72 °F 1961
9 73 °F 1947
9 73 °F 1921
9 73 °F 1964
What's the most it has ever rained in Livermore on 9/18?
For the date of Sep 18, the most precipitation ever recorded in Livermore history is 0.36 inches which happened in 1959.
All-Time Most Precipitation in Livermore on September 18
Rank Precipitation Year
1 0.36 inches 1959
2 0.31 inches 2022
3 0.30 inches 1989
4 0.09 inches 1982
5 0.03 inches 1921
6 0.02 inches 1940
6 0.02 inches 1967
6 0.02 inches 1950
Weather Station Details
Years Station Coordinates
1999–2024 Livermore Municipal Airport location
1903–1998 Livermore location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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