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
May 1 31° 61° 19° (1967) 86° (1949) 0.03" NA
May 2 31° 61° 17° (1964) 80° (1966) 0.03" NA
May 3 31° 62° 13° (1950) 80° (2004) 0.03" NA
May 4 31° 62° 16° (2007) 81° (2004) 0.03" NA
May 5 32° 62° 21° (1961) 80° (1992) 0.03" NA
May 6 32° 63° 18° (1964) 85° (1954) 0.04" NA
May 7 32° 63° 22° (1950) 84° (1992) 0.04" NA
May 8 32° 63° 20° (1950) 92° (1949) 0.04" NA
May 9 32° 64° 21° (1950) 82° (2001) 0.04" NA
May 10 33° 64° 22° (1972) 81° (1969) 0.04" NA
May 11 33° 64° 18° (2000) 82° (1988) 0.04" NA
May 12 33° 64° 20° (1953) 83° (1976) 0.04" NA
May 13 33° 65° 21° (1961) 87° (1976) 0.04" NA
May 14 33° 65° 20° (1968) 85° (1973) 0.04" NA
May 15 33° 66° 22° (1968) 84° (2006) 0.04" NA
May 16 34° 66° 25° (1961) 88° (2006) 0.04" NA
May 17 34° 66° 25° (1974) 88° (1954) 0.04" NA
May 18 34° 66° 18° (1974) 90° (1954) 0.04" NA
May 19 34° 67° 20° (1976) 89° (1954) 0.04" NA
May 20 34° 67° 21° (1976) 85° (1954) 0.04" NA
May 21 35° 67° 19° (2002) 86° (1967) 0.04" NA
May 22 35° 68° 19° (1960) 90° (1949) 0.04" NA
May 23 35° 68° 22° (1976) 87° (2001) 0.04" NA
May 24 35° 68° 22° (1976) 88° (2000) 0.04" NA
May 25 35° 69° 25° (1953) 89° (1982) 0.03" NA
May 26 35° 69° 24° (1977) 87° (1951) 0.03" NA
May 27 36° 69° 21° (1961) 90° (1983) 0.03" NA
May 28 36° 69° 24° (1976) 92° (1984) 0.03" NA
May 29 36° 70° 21° (1976) 94° (2003) 0.03" NA
May 30 36° 70° 26° (1988) 89° (1950) 0.03" NA
May 31 36° 70° 27° (1966) 89° (1950) 0.03" NA
Advertisements
Track Severe Weather on mobile