Saint Helena, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 38° 58° 16° (1937) 83° (1962) 7.46" 0.2"
February 40° 63° 22° (1950) 84° (1971) 7.1" 0"
March 42° 66° 24° (1971) 90° (1966) 5.31" 0.2"
April 44° 73° 27° (1953) 98° (1981) 1.74" 0"
May 48° 79° 30° (1979) 105° (1950) 0.68" 0"
June 52° 86° 36° (1952) 110° (1976) 0.17" 0"
July 54° 89° 39° (1955) 115° (1972) 0.04" 0"
August 54° 88° 32° (1978) 111° (1993) 0.08" 0"
September 52° 86° 35° (1934) 113° (1955) 0.41" 0"
October 47° 78° 23° (1946) 104° (1933) 1.84" 0"
November 42° 65° 23° (1961) 92° (1966) 4.83" 0"
December 37° 58° 11° (1932) 83° (1967) 5.22" 0"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Aug 1 54° 89° 44° (1931) 107° (1993) 0" NA
Aug 2 54° 89° 41° (1931) 111° (1993) 0" NA
Aug 3 54° 89° 43° (1931) 108° (1969) 0" NA
Aug 4 54° 89° 45° (1949) 107° (1997) 0" NA
Aug 5 54° 89° 42° (1950) 107° (1997) 0" NA
Aug 6 54° 89° 44° (1931) 106° (1966) 0" NA
Aug 7 54° 89° 42° (1943) 108° (1981) 0" NA
Aug 8 54° 89° 43° (1932) 106° (1990) 0" NA
Aug 9 54° 89° 32° (1978) 105° (1970) 0" NA
Aug 10 54° 89° 44° (1938) 108° (1996) 0" NA
Aug 11 54° 89° 44° (1932) 110° (1996) 0" NA
Aug 12 54° 89° 44° (1939) 107° (1996) 0" NA
Aug 13 54° 88° 42° (1938) 105° (1933) 0" NA
Aug 14 54° 88° 43° (1940) 109° (1996) 0" NA
Aug 15 54° 88° 43° (1932) 106° (1962) 0" NA
Aug 16 54° 88° 43° (1948) 104° (1933) 0" NA
Aug 17 54° 88° 42° (1935) 108° (1939) 0" NA
Aug 18 54° 88° 42° (1932) 107° (1950) 0" NA
Aug 19 54° 88° 44° (1949) 111° (1950) 0" NA
Aug 20 53° 88° 43° (1943) 106° (1950) 0" NA
Aug 21 53° 88° 42° (1947) 102° (1945) 0" NA
Aug 22 53° 88° 41° (1973) 104° (1931) 0" NA
Aug 23 53° 88° 40° (1938) 108° (1931) 0" NA
Aug 24 53° 88° 41° (1938) 110° (1931) 0.01" NA
Aug 25 53° 88° 40° (1938) 107° (1988) 0.01" NA
Aug 26 53° 88° 40° (1938) 107° (1944) 0.01" NA
Aug 27 53° 88° 38° (1942) 107° (1944) 0.01" NA
Aug 28 53° 88° 40° (1937) 105° (1944) 0.01" NA
Aug 29 53° 87° 43° (1937) 104° (1977) 0.01" NA
Aug 30 53° 87° 40° (1957) 104° (1938) 0.01" NA
Aug 31 53° 87° 43° (1939) 107° (1955) 0.01" NA
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