October weather in St. Helena, CA

The average temperature in St. Helena in October is 63.7°F (49.4°F–78.1°F). Average precipitation: 1.65 inches.

October is a fall month in St. Helena, and is warmer than the annual average of 61°F. Daily temperatures swing about 28.7°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 10h 58m. For travel, October is a comfortable month to visit.

Avg High
78.1°F
Avg Low
49.4°F
Precipitation
1.65 in
Daylight
10h 58m

October records in St. Helena

Date Record High Record Low Record Precip
October 1 102.9°F (1952) 32.0°F (1950) 0.48 in (1926)
October 2 100.9°F (1952) 21.9°F (2019) 0.78 in (2018)
October 3 104.0°F (1917) 35.1°F (1939) 0.81 in (1922)
October 4 102.9°F (1933) 35.1°F (1908) 0.42 in (2008)
October 5 104.0°F (1933) 35.1°F (1929) 1.24 in (2011)
October 6 100.9°F (1930) 25.0°F (1920) 1.01 in (1920)
October 7 100.9°F (1965) 32.0°F (1941) 0.56 in (1947)
October 8 102.9°F (1996) 35.1°F (1941) 0.71 in (1926)
October 9 102.0°F (1996) 35.1°F (1941) 1.30 in (1997)
October 10 102.9°F (1991) 34.0°F (1930) 1.70 in (1957)
October 11 96.1°F (1939) 30.0°F (1924) 1.56 in (1962)
October 12 98.1°F (1978) 21.9°F (2013) 5.58 in (1962)
October 13 98.1°F (1978) 21.9°F (2019) 3.60 in (2009)
October 14 100.9°F (1961) 21.9°F (2019) 0.93 in (1993)
October 15 100.0°F (1961) 21.9°F (2019) 2.48 in (1969)
October 16 98.1°F (1961) 21.9°F (2019) 1.72 in (1947)
October 17 99.0°F (1933) 28.0°F (2020) 0.20 in (1950)
October 18 98.1°F (2020) 32.0°F (1971) 1.63 in (1920)
October 19 98.1°F (1921) 34.0°F (1946) 0.67 in (1909)
October 20 95.0°F (2022) 27.0°F (1949) 0.85 in (1985)
October 21 98.1°F (1929) 30.0°F (1949) 1.03 in (1989)
October 22 96.1°F (1929) 30.0°F (1949) 1.80 in (1989)
October 23 96.1°F (1929) 32.0°F (1949) 2.00 in (1957)
October 24 99.0°F (2017) 30.0°F (1919) 9.93 in (2021)
October 25 95.0°F (1917) 28.9°F (1939) 2.05 in (1982)
October 26 95.0°F (2017) 28.0°F (1919) 2.01 in (1991)
October 27 93.9°F (2003) 30.9°F (1919) 2.38 in (1981)
October 28 93.0°F (1915) 26.1°F (1946) 1.67 in (1992)
October 29 91.0°F (1939) 23.0°F (1946) 1.67 in (1945)
October 30 93.0°F (1939) 27.0°F (1946) 2.59 in (1956)
October 31 93.9°F (1966) 26.1°F (1935) 1.19 in (1934)

Other months in St. Helena