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
Apr 1 44° 69° 28° (1936) 87° (1985) 0.1" 0"
Apr 2 44° 69° 29° (1976) 91° (1966) 0.1" 0"
Apr 3 44° 69° 30° (1955) 89° (1961) 0.09" 0"
Apr 4 44° 70° 32° (1945) 89° (1960) 0.1" 0"
Apr 5 44° 70° 29° (1932) 90° (1939) 0.09" 0"
Apr 6 44° 70° 31° (1944) 93° (1989) 0.09" 0"
Apr 7 44° 70° 30° (1932) 93° (1989) 0.09" 0"
Apr 8 44° 70° 27° (1953) 96° (1989) 0.07" 0"
Apr 9 44° 71° 30° (1953) 94° (1989) 0.08" 0"
Apr 10 44° 71° 32° (1933) 91° (1951) 0.07" 0"
Apr 11 44° 71° 32° (1933) 89° (1936) 0.07" 0"
Apr 12 45° 71° 31° (1933) 90° (1947) 0.07" 0"
Apr 13 45° 71° 31° (1972) 95° (1985) 0.07" 0"
Apr 14 45° 72° 31° (1955) 93° (1985) 0.06" 0"
Apr 15 45° 72° 30° (1975) 95° (1947) 0.06" 0"
Apr 16 45° 72° 31° (1970) 89° (1931) 0.06" 0"
Apr 17 45° 72° 29° (1933) 91° (1954) 0.05" 0"
Apr 18 45° 73° 31° (1933) 90° (1938) 0.06" 0"
Apr 19 45° 73° 31° (1961) 91° (1950) 0.06" 0"
Apr 20 45° 73° 31° (1967) 96° (1931) 0.06" 0"
Apr 21 46° 73° 31° (1963) 93° (1931) 0.06" 0"
Apr 22 46° 74° 31° (1960) 90° (1998) 0.05" 0"
Apr 23 46° 74° 31° (1970) 94° (1946) 0.06" 0"
Apr 24 46° 74° 30° (1964) 93° (1946) 0.05" 0"
Apr 25 46° 74° 31° (1944) 89° (1965) 0.05" 0"
Apr 26 46° 74° 34° (1932) 93° (2004) 0.05" 0"
Apr 27 47° 75° 30° (1955) 92° (2004) 0.04" 0"
Apr 28 47° 75° 31° (1967) 95° (1981) 0.04" 0"
Apr 29 47° 75° 32° (1948) 98° (1981) 0.04" 0"
Apr 30 47° 75° 31° (1933) 94° (1996) 0.04" 0"
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