Saint Helena, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 39° 58° 16° (1937) 83° (1962) 6.94" 0"
February 41° 62° 22° (1950) 84° (1971) 7.61" 0"
March 43° 67° 24° (1971) 90° (1966) 5.11" 0"
April 45° 72° 27° (1953) 98° (1981) 1.98" 0"
May 50° 79° 30° (1979) 105° (1950) 1.3" 0"
June 53° 85° 36° (1952) 110° (1976) 0.16" 0"
July 55° 89° 39° (1955) 115° (1972) 0" 0"
August 55° 89° 32° (1978) 111° (1993) 0.05" 0"
September 52° 86° 35° (1934) 113° (1955) 0.28" 0"
October 48° 78° 23° (1946) 104° (1933) 1.85" 0"
November 43° 65° 23° (1961) 92° (1966) 4.49" 0"
December 38° 58° 11° (1932) 83° (1967) 7.12" 0"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 50° 83° 32° (1950) 103° (1952) 0.02" 0"
Oct 2 50° 82° 32° (1950) 101° (1952) 0.02" 0"
Oct 3 50° 82° 35° (1939) 100° (1985) 0.03" 0"
Oct 4 50° 82° 36° (1954) 103° (1933) 0.02" 0"
Oct 5 50° 82° 36° (1940) 104° (1933) 0.03" 0"
Oct 6 50° 81° 33° (1941) 95° (1976) 0.03" 0"
Oct 7 50° 81° 32° (1941) 101° (1965) 0.03" 0"
Oct 8 49° 81° 35° (1941) 103° (1996) 0.03" 0"
Oct 9 49° 80° 35° (1941) 102° (1996) 0.03" 0"
Oct 10 49° 80° 35° (1968) 97° (1934) 0.04" 0"
Oct 11 49° 80° 36° (1932) 103° (1991) 0.04" 0"
Oct 12 49° 79° 35° (1932) 98° (1978) 0.05" 0"
Oct 13 49° 79° 36° (1931) 98° (1978) 0.05" 0"
Oct 14 49° 79° 36° (1941) 101° (1961) 0.05" 0"
Oct 15 48° 78° 33° (1931) 100° (1961) 0.06" 0"
Oct 16 48° 78° 34° (1939) 98° (1961) 0.06" 0"
Oct 17 48° 77° 32° (1938) 99° (1933) 0.06" 0"
Oct 18 48° 77° 32° (1971) 96° (1974) 0.07" 0"
Oct 19 48° 77° 34° (1946) 96° (1964) 0.07" 0"
Oct 20 48° 76° 27° (1949) 93° (1964) 0.08" 0"
Oct 21 48° 76° 30° (1949) 94° (1937) 0.07" 0"
Oct 22 47° 75° 30° (1949) 93° (1939) 0.07" 0"
Oct 23 47° 75° 32° (1949) 95° (1965) 0.08" 0"
Oct 24 47° 75° 30° (1949) 95° (1965) 0.08" 0"
Oct 25 47° 74° 29° (1939) 92° (2003) 0.08" 0"
Oct 26 47° 74° 30° (1939) 93° (2003) 0.09" 0"
Oct 27 47° 73° 34° (1936) 94° (2003) 0.1" 0"
Oct 28 46° 73° 26° (1946) 88° (1939) 0.09" 0"
Oct 29 46° 72° 23° (1946) 91° (1939) 0.1" 0"
Oct 30 46° 72° 27° (1946) 93° (1939) 0.11" 0"
Oct 31 46° 72° 26° (1935) 94° (1966) 0.11" 0"
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