Portola, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 19° 42° -22° (1971) 66° (1961) 4.06" 10.1"
February 21° 45° -21° (1949) 72° (1986) 4.03" 11.8"
March 25° 51° -12° (1952) 80° (1966) 3.36" 5.6"
April 29° 57° 4° (1975) 85° (1981) 1.37" 2.7"
May 35° 67° 13° (1950) 94° (2003) 0.96" 0.3"
June 40° 76° 20° (2002) 111° (2006) 0.52" 0.1"
July 44° 85° 22° (1976) 103° (2002) 0.28" 0"
August 42° 84° 23° (1960) 107° (1981) 0.28" 0"
September 37° 77° 14° (1950) 100° (1955) 0.6" 0"
October 30° 66° 9° (1971) 92° (1980) 1.27" 0.3"
November 24° 51° 0° (1975) 76° (1949) 2.59" 4.3"
December 19° 42° -28° (1972) 70° (1958) 4.09" 7.8"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Feb 1 20° 43° -10° (1950) 64° (2003) 0.11" 0.4"
Feb 2 20° 43° -11° (1950) 60° (1953) 0.11" 0.5"
Feb 3 20° 43° -3° (1950) 63° (1963) 0.12" 0.5"
Feb 4 20° 43° -8° (1957) 61° (1963) 0.12" 0.5"
Feb 5 20° 44° -18° (1989) 64° (1995) 0.12" 0.4"
Feb 6 20° 44° -6° (1989) 63° (1951) 0.12" 0.4"
Feb 7 20° 44° -8° (1989) 69° (1963) 0.12" 0.5"
Feb 8 20° 44° -10° (1949) 66° (1963) 0.13" 0.4"
Feb 9 20° 44° 2° (1956) 67° (1951) 0.12" 0.4"
Feb 10 20° 44° 3° (1985) 65° (1951) 0.12" 0.5"
Feb 11 20° 44° 2° (1966) 68° (1991) 0.13" 0.5"
Feb 12 20° 44° -21° (1949) 60° (1988) 0.13" 0.4"
Feb 13 21° 45° -19° (1949) 62° (1977) 0.13" 0.5"
Feb 14 21° 45° -12° (1949) 61° (1996) 0.14" 0.5"
Feb 15 21° 45° 2° (1989) 65° (1991) 0.14" 0.5"
Feb 16 21° 45° -3° (1956) 67° (1977) 0.15" 0.5"
Feb 17 21° 45° 4° (1969) 61° (2007) 0.15" 0.4"
Feb 18 21° 46° -6° (1956) 64° (1950) 0.15" 0.4"
Feb 19 21° 46° -11° (1990) 67° (1977) 0.15" 0.4"
Feb 20 22° 46° -7° (1990) 65° (1982) 0.16" 0.4"
Feb 21 22° 46° -4° (1969) 68° (1995) 0.15" 0.4"
Feb 22 22° 46° 0° (1969) 65° (1995) 0.16" 0.4"
Feb 23 22° 47° 6° (1974) 64° (1995) 0.15" 0.3"
Feb 24 22° 47° 8° (1951) 66° (1995) 0.16" 0.4"
Feb 25 22° 47° -7° (1962) 68° (1986) 0.15" 0.3"
Feb 26 23° 47° -13° (1962) 68° (1986) 0.16" 0.3"
Feb 27 23° 47° -20° (1962) 70° (1986) 0.16" 0.4"
Feb 28 23° 48° -13° (1955) 72° (1986) 0.16" 0.3"
Feb 29 23° 48° 18° (2004) 64° (1968) 0.16" NA
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