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
Aug 1 5.6° 30° -1° (1960) 37° (1977) 0.01" NA
Aug 2 5.6° 30° -1° (1959) 37° (1993) 0.01" NA
Aug 3 5.6° 29.4° -2° (1956) 38° (1961) 0.01" NA
Aug 4 29.4° -2° (1953) 37° (1978) 0.01" NA
Aug 5 29.4° -2° (1956) 36° (1978) 0.01" NA
Aug 6 29.4° -1° (1950) 38° (1981) 0.01" NA
Aug 7 29.4° -4° (1976) 41° (1981) 0.01" NA
Aug 8 29.4° -1° (1957) 42° (1981) 0.01" NA
Aug 9 29.4° -2° (1950) 39° (1981) 0.01" NA
Aug 10 29.4° -1° (1948) 37° (1981) 0.01" NA
Aug 11 29.4° -2° (1957) 37° (1981) 0.01" NA
Aug 12 28.9° -3° (1957) 36° (1981) 0.01" NA
Aug 13 28.9° -1° (1952) 36° (1998) 0.01" NA
Aug 14 28.9° -1° (1974) 37° (2002) 0.01" NA
Aug 15 4.4° 28.9° -3° (1954) 38° (1966) 0.01" NA
Aug 16 4.4° 28.9° -2° (1957) 36° (1977) 0.01" NA
Aug 17 4.4° 28.9° -2° (1957) 34° (1966) 0.01" NA
Aug 18 4.4° 28.9° -3° (1976) 34° (1951) 0.01" NA
Aug 19 4.4° 28.3° -2° (1957) 35° (2003) 0.01" NA
Aug 20 4.4° 28.3° -1° (1957) 36° (1988) 0.02" NA
Aug 21 4.4° 28.3° -2° (1959) 34° (1969) 0.02" NA
Aug 22 4.4° 28.3° -3° (1968) 36° (1982) 0.02" NA
Aug 23 3.9° 28.3° -4° (1960) 34° (1967) 0.02" NA
Aug 24 3.9° 27.8° -2° (1948) 34° (1982) 0.02" NA
Aug 25 3.9° 27.8° -3° (1960) 34° (1988) 0.02" NA
Aug 26 3.9° 27.8° -3° (1961) 34° (1988) 0.02" NA
Aug 27 3.9° 27.8° -3° (1952) 36° (1981) 0.02" NA
Aug 28 3.9° 27.2° -3° (1959) 34° (2001) 0.02" NA
Aug 29 3.9° 27.2° -5° (1960) 35° (1988) 0.02" NA
Aug 30 3.3° 27.2° -4° (1957) 34° (1955) 0.02" NA
Aug 31 3.3° 27.2° -2° (1966) 35° (1976) 0.02" NA
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