Napa October 31 Weather Records

Daily averages and all-time records for weather in Napa, California for the date of October 31 (Halloween).
October 31 All-Time Records
1901–2024
Highest temperature 92 °F 1906
Lowest temperature 29 °F 1935
Lowest daily high 55 °F 1925
Highest daily low 61 °F 1983
Most precipitation 1.20 inches 1927
October 31 Average Weather
1991–2020 1
Average high 70.9 °F
Average low 43.4 °F
Chance precipitation 16.7%
Napa October 31 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 76 37 0.00 n/a
2022 66 45 0.00 n/a
2021 64 54 0.02 n/a
2020 79 39 0.00 n/a
2019 70 32 0.00 n/a
2018 80 43 0.00 0.0
2017 66 41 0.00 n/a
2016 66 47 0.31 n/a
2015 79 45 0.00 n/a
2014 62 49 0.31 n/a
2013 72 35 0.00 n/a
2012 64 55 0.23 n/a
2011 79 43 0.00 n/a
2010 67 44 0.00 n/a
2009 71 42 0.00 n/a
2008 66 57 0.19 n/a
2007 63 43 0.00 n/a
2006 61 42 0.00 n/a
2005 73 35 0.00 n/a
2004 73 48 0.00 n/a
2003 59 37 0.00 n/a
2002 68 30 0.00 n/a
2001 68 46 0.00 n/a
2000 67 34 0.00 n/a
1999 77 41 0.00 n/a
1998 69 40 0.04 0.0
1997 84 55 0.00 0.0
1996 65 47 0.10 0.0
1995 63 56 0.00 0.0
1994 77 42 0.00 0.0
1993 72 49 0.00 0.0
1992 65 52 0.05 0.0
1991 68 37 0.00 0.0
1990 69 53 0.18 0.0
1989 72 38 0.00 0.0
1988 77 45 0.00 0.0
1987 71 52 0.00 0.0
1986 76 48 0.00 0.0
1985 73 43 0.00 0.0
1984 67 38 0.00 0.0
1983 69 61 0.31 0.0
1982 74 43 0.00 0.0
1981 78 45 0.00 0.0
1980 78 40 0.00 0.0
1979 73 44 0.00 0.0
1978 68 46 0.00 0.0
1977 69 43 0.00 0.0
1976 75 42 0.00 0.0
1975 69 50 0.00 0.0
1974 61 49 0.09 0.0
1973 80 48 0.00 0.0
1972 68 38 0.00 0.0
1971 66 37 0.02 0.0
1970 77 45 0.00 0.0
1969 87 46 0.00 0.0
1968 65 46 0.00 0.0
1967 84 45 0.00 0.0
1966 88 46 0.00 0.0
1965 80 47 0.00 0.0
1964 67 47 0.00 0.0
1963 74 36 0.00 0.0
1962 82 48 0.00 0.0
1961 72 40 0.00 0.0
1960 81 45 0.00 0.0
1959 81 58 0.00 0.0
1958 70 45 0.00 0.0
1957 68 44 0.00 0.0
1956 62 37 0.60 0.0
1955 71 37 0.00 0.0
1954 67 40 0.00 0.0
1953 81 38 0.00 0.0
1952 69 43 0.00 0.0
1951 64 48 0.00 0.0
1950 62 39 0.00 0.0
1949 89 46 0.00 0.0
1948 65 43 0.00 0.0
1947 72 45 0.00 n/a
1946 63 34 0.00 n/a
1945 67 53 1.16 n/a
1944 67 55 1.15 n/a
1943 72 35 0.00 n/a
1942 76 42 0.00 n/a
1941 71 44 0.00 n/a
1940 73 51 0.00 n/a
1939 79 43 0.00 n/a
1938 66 51 0.01 n/a
1937 72 40 0.01 n/a
1936 58 40 0.00 n/a
1935 60 29 0.00 n/a
1934 72 59 0.76 n/a
1933 69 49 0.87 n/a
1932 76 32 0.00 n/a
1931 84 46 0.00 n/a
1930 84 41 0.00 n/a
1929 76 37 0.00 n/a
1928 67 42 0.00 n/a
1927 69 51 1.20 n/a
1926 75 39 0.00 n/a
1925 55 48 0.00 n/a
1924 70 41 0.00 n/a
1923 63 35 0.00 n/a
1922 62 41 0.10 n/a
1921 80 42 0.00 n/a
1920 69 51 0.00 n/a
1919 69 38 0.00 n/a
1918 67 43 0.00 n/a
1917 81 36 0.00 n/a
1916 n/a n/a n/a n/a
1915 n/a n/a n/a n/a
1914 82 47 0.00 n/a
1913 70 59 0.51 n/a
1912 70 42 0.00 n/a
1911 67 40 0.00 n/a
1910 74 50 0.00 n/a
1909 67 45 n/a n/a
1908 65 47 n/a n/a
1907 70 44 0.00 n/a
1906 92 55 0.00 n/a
1905 70 42 n/a n/a
1904 72 40 0.00 n/a
1903 71 45 n/a n/a
1902 74 40 n/a n/a
1901 77 44 0.00 n/a
What's the all-time high for Napa on 10/31?
For the date of Oct 31, the highest temperature ever reached in Napa history is 92 °F which happened in 1906.
Highest Temperatures in Napa on October 31
Rank Temperature Year
1 92 °F 1906
2 89 °F 1949
3 88 °F 1966
4 87 °F 1969
5 84 °F 1967
5 84 °F 1931
5 84 °F 1997
5 84 °F 1930
9 82 °F 1914
9 82 °F 1962
What's the all-time low for Napa on 10/31?
For the date of Oct 31, the lowest temperature ever reached in Napa history is 29 °F which happened in 1935.
Lowest Temperatures in Napa on October 31
Rank Temperature Year
1 29 °F 1935
2 30 °F 2002
3 32 °F 1932
3 32 °F 2019
5 34 °F 1946
5 34 °F 2000
7 35 °F 2005
7 35 °F 1923
7 35 °F 1943
7 35 °F 2013
Lowest High Temperatures in Napa on October 31
Rank Temperature Year
1 55 °F 1925
2 58 °F 1936
3 59 °F 2003
4 60 °F 1935
5 61 °F 1974
5 61 °F 2006
7 62 °F 1956
7 62 °F 2014
7 62 °F 1950
7 62 °F 1922
What's the most it has ever rained in Napa on 10/31?
For the date of Oct 31, the most precipitation ever recorded in Napa history is 1.20 inches which happened in 1927.
All-Time Most Precipitation in Napa on October 31
Rank Precipitation Year
1 1.20 inches 1927
2 1.16 inches 1945
3 1.15 inches 1944
4 0.87 inches 1933
5 0.76 inches 1934
6 0.60 inches 1956
7 0.51 inches 1913
8 0.31 inches 2014
8 0.31 inches 2016
8 0.31 inches 1983
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.
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