Portola, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -7° -30° (1971) 18.9° (1961) 4.06" 10.1"
February -6° -29.4° (1949) 22.2° (1986) 4.03" 11.8"
March -4° 11° -24.4° (1952) 26.7° (1966) 3.36" 5.6"
April -2° 14° -15.6° (1975) 29.4° (1981) 1.37" 2.7"
May 19° -10.6° (1950) 34.4° (2003) 0.96" 0.3"
June 25° -6.7° (2002) 43.9° (2006) 0.52" 0.1"
July 29° -5.6° (1976) 39.4° (2002) 0.28" 0"
August 29° -5° (1960) 41.7° (1981) 0.28" 0"
September 25° -10° (1950) 37.8° (1955) 0.6" 0"
October -1° 19° -12.8° (1971) 33.3° (1980) 1.27" 0.3"
November -4° 10° -17.8° (1975) 24.4° (1949) 2.59" 4.3"
December -7° -33.3° (1972) 21.1° (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 -3° 12° -10° (1999) 26° (1966) 0.07" 0.2"
Apr 2 -3° 12° -12° (1963) 27° (1961) 0.07" 0.2"
Apr 3 -3° 12° -9° (1955) 23° (1961) 0.07" 0.1"
Apr 4 -3° 12° -9° (1999) 24° (1977) 0.07" 0.2"
Apr 5 -2° 13° -8° (1999) 24° (1977) 0.06" 0.2"
Apr 6 -2° 13° -13° (1982) 26° (1989) 0.07" 0.2"
Apr 7 -2° 13° -16° (1975) 26° (1989) 0.06" 0.2"
Apr 8 -2° 13° -11° (2001) 24° (1989) 0.06" 0.1"
Apr 9 -2° 13° -11° (1999) 26° (1951) 0.05" 0.2"
Apr 10 -2° 13° -11° (1999) 26° (1951) 0.04" 0.1"
Apr 11 -2° 13° -9° (1972) 24° (1988) 0.05" 0.2"
Apr 12 -2° 13° -10° (2007) 24° (1951) 0.04" 0.1"
Apr 13 -2° 14° -13° (1972) 26° (1951) 0.04" 0.1"
Apr 14 -2° 14° -9° (1961) 26° (1985) 0.04" 0.1"
Apr 15 -2° 14° -11° (1975) 26° (1985) 0.03" 0.1"
Apr 16 -2° 14° -11° (1963) 26° (1954) 0.04" 0.1"
Apr 17 -2° 14° -9° (1963) 26° (1954) 0.03" 0.1"
Apr 18 -2° 14° -8° (1955) 25° (1954) 0.04" 0"
Apr 19 -2° 14° -8° (1966) 25° (1950) 0.04" 0.1"
Apr 20 -1° 15° -11° (1961) 26° (2009) 0.04" 0"
Apr 21 -1° 15° -11° (2008) 29° (1954) 0.03" 0"
Apr 22 -1° 15° -11° (1963) 27° (2009) 0.04" 0"
Apr 23 -1° 15° -8° (1963) 25° (1977) 0.04" 0"
Apr 24 -1° 15° -12° (1961) 24° (1949) 0.03" 0"
Apr 25 -1° 15° -9° (1974) 24° (1977) 0.04" 0.1"
Apr 26 -1° 16° -9° (1975) 26° (1987) 0.04" 0"
Apr 27 -1° 16° -11° (1955) 27° (2004) 0.04" 0"
Apr 28 -1° 16° -11° (1967) 26° (1981) 0.03" 0"
Apr 29 -1° 16° -9° (1967) 27° (1981) 0.04" 0"
Apr 30 16° -7° (1949) 29° (1981) 0.03" 0"
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