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
Feb 1 19° 42° -10° (1950) 64° (2003) 0.14" NA
Feb 2 19° 42° -11° (1950) 60° (1953) 0.14" NA
Feb 3 19° 43° -3° (1950) 63° (1963) 0.14" NA
Feb 4 19° 43° -8° (1957) 61° (1963) 0.14" NA
Feb 5 19° 43° -18° (1989) 64° (1995) 0.14" NA
Feb 6 20° 43° -6° (1989) 63° (1951) 0.14" NA
Feb 7 20° 43° -8° (1989) 69° (1963) 0.14" NA
Feb 8 20° 43° -10° (1949) 66° (1963) 0.14" NA
Feb 9 20° 44° 2° (1956) 67° (1951) 0.14" NA
Feb 10 20° 44° 3° (1985) 65° (1951) 0.14" NA
Feb 11 20° 44° 2° (1966) 68° (1991) 0.14" NA
Feb 12 20° 44° -21° (1949) 60° (1988) 0.14" NA
Feb 13 21° 44° -19° (1949) 62° (1977) 0.14" NA
Feb 14 21° 44° -12° (1949) 61° (1996) 0.14" NA
Feb 15 21° 45° 2° (1989) 65° (1991) 0.14" NA
Feb 16 21° 45° -3° (1956) 67° (1977) 0.14" NA
Feb 17 21° 45° 4° (1969) 61° (2007) 0.14" NA
Feb 18 21° 45° -6° (1956) 64° (1950) 0.14" NA
Feb 19 22° 45° -11° (1990) 67° (1977) 0.14" NA
Feb 20 22° 45° -7° (1990) 65° (1982) 0.14" NA
Feb 21 22° 46° -4° (1969) 68° (1995) 0.14" NA
Feb 22 22° 46° 0° (1969) 65° (1995) 0.14" NA
Feb 23 22° 46° 6° (1974) 64° (1995) 0.14" NA
Feb 24 22° 46° 8° (1951) 66° (1995) 0.13" NA
Feb 25 23° 46° -7° (1962) 68° (1986) 0.13" NA
Feb 26 23° 46° -13° (1962) 68° (1986) 0.13" NA
Feb 27 23° 47° -20° (1962) 70° (1986) 0.13" NA
Feb 28 23° 47° -13° (1955) 72° (1986) 0.13" NA
Feb 29 23° 47° 18° (2004) 64° (1968) 0.13" NA
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