Napa December 18 Weather Records

Daily averages and all-time records for weather in Napa, California for the date of December 18.
December 18 All-Time Records
1901–2024
Highest temperature 68 °F 1958
Lowest temperature 21 °F 2006
Lowest daily high 42 °F 1918
Highest daily low 55 °F 1940
Most precipitation 2.18 inches 2005
December 18 Average Weather
1991–2020 1
Average high 57.2 °F
Average low 37.3 °F
Chance precipitation 34.4%
Napa December 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 61 50 1.31 n/a
2022 53 28 0.00 n/a
2021 49 32 0.00 n/a
2020 61 33 0.00 n/a
2019 55 44 0.43 n/a
2018 59 40 0.00 n/a
2017 63 34 0.00 n/a
2016 54 25 0.00 n/a
2015 58 45 0.39 n/a
2014 56 50 0.00 n/a
2013 59 33 0.00 n/a
2012 54 31 0.00 n/a
2011 53 27 0.00 n/a
2010 57 52 0.23 n/a
2009 57 39 0.00 n/a
2008 51 22 0.18 n/a
2007 57 41 0.67 n/a
2006 55 21 0.00 n/a
2005 60 45 2.18 n/a
2004 50 31 0.00 n/a
2003 62 41 0.00 n/a
2002 54 30 0.00 n/a
2001 54 37 0.00 n/a
2000 60 39 0.00 n/a
1999 57 34 0.00 n/a
1998 63 35 0.00 0.0
1997 62 45 0.00 0.0
1996 66 38 0.00 0.0
1995 58 37 0.20 0.0
1994 54 44 0.06 0.0
1993 56 31 0.00 0.0
1992 51 28 0.00 0.0
1991 59 47 0.37 0.0
1990 58 32 0.00 0.0
1989 51 31 0.00 0.0
1988 54 37 0.00 0.0
1987 52 34 0.00 0.0
1986 58 46 0.12 0.0
1985 50 30 0.00 0.0
1984 47 37 0.05 0.0
1983 57 45 0.00 0.0
1982 60 37 0.00 0.0
1981 55 48 0.43 0.0
1980 62 48 0.00 0.0
1979 55 34 0.00 0.0
1978 50 36 0.26 0.0
1977 57 36 0.00 0.0
1976 62 32 0.00 0.0
1975 63 32 0.00 0.0
1974 60 32 0.00 0.0
1973 61 38 0.00 0.0
1972 54 45 0.13 0.0
1971 58 30 0.00 0.0
1970 48 39 0.51 0.0
1969 58 46 0.20 0.0
1968 61 33 0.00 0.0
1967 n/a n/a 0.55 0.0
1966 53 38 0.00 0.0
1965 52 29 0.00 0.0
1964 51 29 0.00 0.0
1963 51 33 0.00 0.0
1962 65 48 0.10 0.0
1961 54 35 0.11 0.0
1960 60 49 0.00 0.0
1959 64 37 0.00 0.0
1958 68 38 0.00 0.0
1957 58 41 0.66 0.0
1956 64 34 0.00 0.0
1955 56 50 0.05 0.0
1954 52 31 0.00 0.0
1953 57 50 0.07 0.0
1952 56 46 0.00 0.0
1951 54 42 0.00 0.0
1950 58 43 0.00 0.0
1949 57 45 0.35 0.0
1948 55 39 0.00 0.0
1947 53 36 0.00 n/a
1946 54 30 0.00 n/a
1945 51 38 0.00 n/a
1944 n/a 40 0.27 n/a
1943 65 50 0.00 n/a
1942 53 43 0.00 n/a
1941 58 51 0.68 n/a
1940 65 55 1.36 n/a
1939 68 37 0.00 n/a
1938 63 45 0.04 n/a
1937 63 34 0.00 n/a
1936 53 31 0.00 n/a
1935 64 27 0.00 n/a
1934 61 34 0.00 n/a
1933 50 35 0.00 n/a
1932 50 39 0.00 n/a
1931 56 34 0.00 n/a
1930 62 38 0.00 n/a
1929 58 53 0.00 n/a
1928 63 35 0.01 n/a
1927 53 29 0.00 n/a
1926 54 31 0.01 n/a
1925 52 46 0.43 n/a
1924 46 23 0.00 n/a
1923 n/a 35 0.03 n/a
1922 59 41 0.00 n/a
1921 n/a n/a n/a n/a
1920 56 48 0.34 n/a
1919 62 30 0.00 n/a
1918 42 32 0.00 n/a
1917 61 49 0.00 n/a
1916 n/a n/a n/a n/a
1915 57 37 n/a n/a
1914 n/a n/a n/a n/a
1913 51 38 0.00 n/a
1912 59 51 0.00 n/a
1911 55 37 0.00 0.0
1910 65 37 0.00 n/a
1909 58 38 n/a n/a
1908 45 29 n/a n/a
1907 50 37 n/a n/a
1906 53 41 n/a n/a
1905 47 36 0.21 n/a
1904 51 35 0.00 n/a
1903 51 43 0.07 n/a
1902 56 32 n/a n/a
1901 62 30 0.00 n/a
What's the all-time high for Napa on 12/18?
For the date of Dec 18, the highest temperature ever reached in Napa history is 68 °F which has happened 2 times, most recently in 1958.
Highest Temperatures in Napa on December 18
Rank Temperature Year
1 68 °F 1958
1 68 °F 1939
3 66 °F 1996
4 65 °F 1940
4 65 °F 1943
4 65 °F 1910
4 65 °F 1962
8 64 °F 1935
8 64 °F 1956
8 64 °F 1959
What's the all-time low for Napa on 12/18?
For the date of Dec 18, the lowest temperature ever reached in Napa history is 21 °F which happened in 2006.
Lowest Temperatures in Napa on December 18
Rank Temperature Year
1 21 °F 2006
2 22 °F 2008
3 23 °F 1924
4 25 °F 2016
5 27 °F 2011
5 27 °F 1935
7 28 °F 2022
7 28 °F 1992
9 29 °F 1908
9 29 °F 1965
9 29 °F 1927
9 29 °F 1964
Lowest High Temperatures in Napa on December 18
Rank Temperature Year
1 42 °F 1918
2 45 °F 1908
3 46 °F 1924
4 47 °F 1905
4 47 °F 1984
6 48 °F 1970
7 49 °F 2021
8 50 °F 1978
8 50 °F 1985
8 50 °F 2004
8 50 °F 1932
8 50 °F 1907
8 50 °F 1933
What's the most it has ever rained in Napa on 12/18?
For the date of Dec 18, the most precipitation ever recorded in Napa history is 2.18 inches which happened in 2005.
All-Time Most Precipitation in Napa on December 18
Rank Precipitation Year
1 2.18 inches 2005
2 1.36 inches 1940
3 1.31 inches 2023
4 0.68 inches 1941
5 0.67 inches 2007
6 0.66 inches 1957
7 0.55 inches 1967
8 0.51 inches 1970
9 0.43 inches 1925
9 0.43 inches 2019
9 0.43 inches 1981
Weather Station Details
Years Station Coordinates
1999–2024 Napa County Airport location
1901–1998 Napa State Hospital location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
© H Brothers Inc, 2021–2024
Contact us | Privacy policy