Portola, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 19° 42° -22° (1971) 66° (1961) 4.06" 10.1"
February 21° 45° -21° (1949) 72° (1986) 4.03" 11.8"
March 25° 51° -12° (1952) 80° (1966) 3.36" 5.6"
April 29° 57° 4° (1975) 85° (1981) 1.37" 2.7"
May 35° 67° 13° (1950) 94° (2003) 0.96" 0.3"
June 40° 76° 20° (2002) 111° (2006) 0.52" 0.1"
July 44° 85° 22° (1976) 103° (2002) 0.28" 0"
August 42° 84° 23° (1960) 107° (1981) 0.28" 0"
September 37° 77° 14° (1950) 100° (1955) 0.6" 0"
October 30° 66° 9° (1971) 92° (1980) 1.27" 0.3"
November 24° 51° 0° (1975) 76° (1949) 2.59" 4.3"
December 19° 42° -28° (1972) 70° (1958) 4.09" 7.8"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 27° 54° 14° (1999) 79° (1966) 0.07" 0.2"
Apr 2 27° 54° 11° (1963) 80° (1961) 0.07" 0.2"
Apr 3 27° 54° 15° (1955) 74° (1961) 0.07" 0.1"
Apr 4 28° 54° 16° (1999) 75° (1977) 0.07" 0.2"
Apr 5 28° 55° 17° (1999) 75° (1977) 0.06" 0.2"
Apr 6 28° 55° 8° (1982) 78° (1989) 0.07" 0.2"
Apr 7 28° 55° 4° (1975) 78° (1989) 0.06" 0.2"
Apr 8 28° 55° 13° (2001) 76° (1989) 0.06" 0.1"
Apr 9 28° 55° 12° (1999) 78° (1951) 0.05" 0.2"
Apr 10 28° 56° 13° (1999) 78° (1951) 0.04" 0.1"
Apr 11 28° 56° 15° (1972) 76° (1988) 0.05" 0.2"
Apr 12 28° 56° 14° (2007) 76° (1951) 0.04" 0.1"
Apr 13 28° 56° 9° (1972) 79° (1951) 0.04" 0.1"
Apr 14 29° 57° 15° (1961) 78° (1985) 0.04" 0.1"
Apr 15 29° 57° 12° (1975) 78° (1985) 0.03" 0.1"
Apr 16 29° 57° 12° (1963) 79° (1954) 0.04" 0.1"
Apr 17 29° 57° 15° (1963) 78° (1954) 0.03" 0.1"
Apr 18 29° 58° 18° (1955) 77° (1954) 0.04" 0"
Apr 19 29° 58° 18° (1966) 77° (1950) 0.04" 0.1"
Apr 20 29° 58° 12° (1961) 79° (2009) 0.04" 0"
Apr 21 30° 59° 12° (2008) 84° (1954) 0.03" 0"
Apr 22 30° 59° 12° (1963) 81° (2009) 0.04" 0"
Apr 23 30° 59° 17° (1963) 77° (1977) 0.04" 0"
Apr 24 30° 60° 10° (1961) 76° (1949) 0.03" 0"
Apr 25 30° 60° 15° (1974) 76° (1977) 0.04" 0.1"
Apr 26 30° 60° 15° (1975) 79° (1987) 0.04" 0"
Apr 27 31° 60° 12° (1955) 80° (2004) 0.04" 0"
Apr 28 31° 61° 13° (1967) 78° (1981) 0.03" 0"
Apr 29 31° 61° 16° (1967) 80° (1981) 0.04" 0"
Apr 30 31° 62° 20° (1949) 85° (1981) 0.03" 0"
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