Portola, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -8° -30° (1971) 18.9° (1961) 4.17" 16.1"
February -6° -29.4° (1949) 22.2° (1986) 3.87" 12.8"
March -3° -24.4° (1952) 26.7° (1966) 3.61" 10.2"
April -2° 14° -15.6° (1975) 29.4° (1981) 1.23" 4"
May 19° -10.6° (1950) 34.4° (2003) 1.12" 1.1"
June 24° -6.7° (2002) 43.9° (2006) 0.54" 0"
July 29° -5.6° (1976) 39.4° (2002) 0.34" 0"
August 29° -5° (1960) 41.7° (1981) 0.43" 0"
September 24° -10° (1950) 37.8° (1955) 0.78" 0.1"
October -2° 18° -12.8° (1971) 33.3° (1980) 1.22" 0.2"
November -5° 10° -17.8° (1975) 24.4° (1949) 2.5" 5.6"
December -8° -33.3° (1972) 21.1° (1958) 3.28" 18.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jun 1 2.2° 21.7° -5° (1976) 32° (2001) 0.03" NA
Jun 2 2.8° 21.7° -5° (1976) 31° (1960) 0.03" NA
Jun 3 2.8° 21.7° -4° (1976) 33° (1969) 0.03" NA
Jun 4 2.8° 22.2° -3° (1962) 33° (1970) 0.03" NA
Jun 5 2.8° 22.2° -7° (1976) 35° (1977) 0.03" NA
Jun 6 2.8° 22.2° -3° (1976) 33° (1977) 0.02" NA
Jun 7 2.8° 22.8° -3° (1951) 33° (1955) 0.02" NA
Jun 8 3.3° 22.8° -6° (1950) 35° (1955) 0.02" NA
Jun 9 3.3° 22.8° -7° (2002) 36° (1955) 0.02" NA
Jun 10 3.3° 23.3° -3° (2004) 32° (1955) 0.02" NA
Jun 11 3.3° 23.3° -4° (1972) 32° (1991) 0.02" NA
Jun 12 3.3° 23.3° -6° (1952) 30° (1974) 0.02" NA
Jun 13 3.3° 23.9° -6° (1952) 32° (1966) 0.02" NA
Jun 14 3.9° 23.9° -3° (1992) 35° (1961) 0.02" NA
Jun 15 3.9° 23.9° -3° (1952) 34° (2000) 0.02" NA
Jun 16 3.9° 24.4° -2° (1952) 32° (1982) 0.02" NA
Jun 17 3.9° 24.4° -2° (1994) 33° (1985) 0.02" NA
Jun 18 3.9° 24.4° -3° (1975) 34° (1985) 0.02" NA
Jun 19 3.9° 25° -2° (1994) 33° (1959) 0.02" NA
Jun 20 3.9° 25° -1° (1974) 37° (1961) 0.01" NA
Jun 21 4.4° 25° -2° (1991) 36° (1961) 0.01" NA
Jun 22 4.4° 25.6° -2° (1966) 36° (1961) 0.01" NA
Jun 23 4.4° 25.6° -4° (1976) 38.3° (2006) 0.01" NA
Jun 24 4.4° 26.1° -2° (2003) 43.9° (2006) 0.01" NA
Jun 25 4.4° 26.1° -2° (1950) 36° (1977) 0.01" NA
Jun 26 4.4° 26.1° -3° (1974) 35.6° (2006) 0.01" NA
Jun 27 4.4° 26.7° -2° (1976) 36° (1956) 0.01" NA
Jun 28 4.4° 26.7° -1° (1960) 34° (1977) 0.01" NA
Jun 29 26.7° -3° (1963) 37° (1950) 0.01" NA
Jun 30 27.2° -3° (1953) 37° (1950) 0.01" NA
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