Portola, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 18° 41° -22° (1971) 66° (1961) 4.17" 16.1"
February 21° 45° -21° (1949) 72° (1986) 3.87" 12.8"
March 26° 49° -12° (1952) 80° (1966) 3.61" 10.2"
April 29° 57° 4° (1975) 85° (1981) 1.23" 4"
May 34° 66° 13° (1950) 94° (2003) 1.12" 1.1"
June 39° 76° 20° (2002) 111° (2006) 0.54" 0"
July 42° 84° 22° (1976) 103° (2002) 0.34" 0"
August 40° 84° 23° (1960) 107° (1981) 0.43" 0"
September 35° 76° 14° (1950) 100° (1955) 0.78" 0.1"
October 29° 65° 9° (1971) 92° (1980) 1.22" 0.2"
November 23° 50° 0° (1975) 76° (1949) 2.5" 5.6"
December 18° 42° -28° (1972) 70° (1958) 3.28" 18.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 32° 72° 14° (1950) 92° (1980) 0.03" NA
Oct 2 32° 71° 16° (1950) 89° (1980) 0.03" NA
Oct 3 31° 71° 22° (1954) 90° (1980) 0.03" NA
Oct 4 31° 71° 22° (1969) 90° (1980) 0.03" NA
Oct 5 31° 70° 17° (1969) 87° (1980) 0.03" NA
Oct 6 31° 70° 18° (1969) 88° (1980) 0.03" NA
Oct 7 30° 70° 18° (1962) 88° (1980) 0.03" NA
Oct 8 30° 69° 17° (1968) 87° (1980) 0.03" NA
Oct 9 30° 69° 18° (1985) 90° (1996) 0.03" NA
Oct 10 30° 68° 21° (1948) 87° (1996) 0.03" NA
Oct 11 30° 68° 25° (1955) 83° (1965) 0.03" NA
Oct 12 29° 67° 18° (1969) 82° (1991) 0.03" NA
Oct 13 29° 67° 19° (1985) 84° (1952) 0.03" NA
Oct 14 29° 67° 15° (1960) 84° (1959) 0.03" NA
Oct 15 29° 66° 15° (1966) 83° (1954) 0.04" NA
Oct 16 28° 66° 20° (1967) 83° (1991) 0.04" NA
Oct 17 28° 65° 18° (1966) 82° (1959) 0.04" NA
Oct 18 28° 65° 17° (1982) 82° (1988) 0.04" NA
Oct 19 28° 64° 19° (1966) 80° (1977) 0.04" NA
Oct 20 28° 64° 15° (1949) 81° (1964) 0.04" NA
Oct 21 27° 63° 14° (1949) 81° (1964) 0.04" NA
Oct 22 27° 63° 12° (1961) 82° (2003) 0.04" NA
Oct 23 27° 62° 17° (1961) 83° (1959) 0.05" NA
Oct 24 27° 62° 12° (1956) 85° (1959) 0.05" NA
Oct 25 27° 61° 12° (1954) 82° (1959) 0.05" NA
Oct 26 26° 60° 17° (2004) 76° (1952) 0.05" NA
Oct 27 26° 60° 13° (1948) 82° (1978) 0.05" NA
Oct 28 26° 59° 11° (1948) 78° (1968) 0.05" NA
Oct 29 26° 59° 9° (1971) 80° (2003) 0.06" NA
Oct 30 26° 58° 9° (1948) 79° (1966) 0.06" NA
Oct 31 25° 57° 14° (2002) 77° (1949) 0.06" NA
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