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
Dec 1 39° 60° 28° (1933) 79° (1959) 0.17" NA
Dec 2 38° 60° 25° (1936) 77° (1958) 0.17" NA
Dec 3 38° 60° 22° (1936) 80° (1958) 0.16" NA
Dec 4 38° 60° 21° (1936) 77° (1939) 0.16" NA
Dec 5 38° 60° 22° (1972) 77° (1937) 0.16" NA
Dec 6 38° 60° 26° (1931) 74° (1989) 0.16" NA
Dec 7 37° 59° 26° (1959) 75° (1934) 0.16" NA
Dec 8 37° 59° 21° (1972) 76° (1943) 0.16" NA
Dec 9 37° 59° 17° (1972) 76° (1940) 0.16" NA
Dec 10 37° 59° 15° (1932) 77° (1958) 0.16" NA
Dec 11 37° 59° 11° (1932) 78° (1958) 0.16" NA
Dec 12 37° 59° 23° (1972) 82° (1958) 0.16" NA
Dec 13 37° 59° 20° (1932) 73° (1956) 0.16" NA
Dec 14 37° 58° 18° (1932) 77° (1958) 0.16" NA
Dec 15 36° 58° 18° (1932) 81° (1980) 0.16" NA
Dec 16 36° 58° 24° (1978) 76° (1980) 0.16" NA
Dec 17 36° 58° 25° (1965) 78° (1958) 0.16" NA
Dec 18 36° 58° 23° (1965) 75° (1958) 0.16" NA
Dec 19 36° 58° 26° (1965) 71° (1937) 0.16" NA
Dec 20 36° 58° 23° (1978) 68° (1937) 0.17" NA
Dec 21 36° 58° 21° (1968) 65° (1953) 0.17" NA
Dec 22 36° 58° 14° (1990) 68° (2004) 0.17" NA
Dec 23 36° 58° 16° (1990) 74° (1938) 0.17" NA
Dec 24 36° 57° 19° (1948) 70° (1956) 0.17" NA
Dec 25 36° 57° 20° (1990) 76° (1972) 0.18" NA
Dec 26 36° 57° 21° (1990) 79° (1967) 0.18" NA
Dec 27 36° 57° 21° (1990) 83° (1967) 0.18" NA
Dec 28 36° 57° 23° (1956) 77° (1975) 0.19" NA
Dec 29 36° 57° 22° (1956) 74° (1997) 0.19" NA
Dec 30 36° 57° 22° (1978) 74° (1997) 0.19" NA
Dec 31 37° 57° 22° (1990) 70° (1997) 0.2" NA
Advertisements
Track Severe Weather on mobile