Portola Valley, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 36° 60° 20° (1976) 75° (1984) 6.16" NA
February 39° 64° 17° (1989) 84° (1995) 5.79" NA
March 41° 67° 28° (1976) 91° (2004) 4.57" NA
April 42° 73° 30° (1976) 99° (1996) 1.64" NA
May 45° 78° 33° (1986) 105° (2001) 0.64" NA
June 48° 84° 36° (1982) 108° (1995) 0.13" NA
July 51° 88° 35° (1981) 114° (2006) 0.04" NA
August 51° 88° 38° (1987) 110° (1993) 0.14" NA
September 49° 85° 38° (1987) 108° (2000) 0.26" NA
October 45° 79° 30° (2007) 106° (1996) 1.27" NA
November 40° 66° 23° (1987) 90° (1997) 3.86" NA
December 36° 60° 22° (1985) 76° (1988) 4.21" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Nov 1 42° 72° 34° (1984) 88° (1997) 0.09" NA
Nov 2 42° 72° 33° (2003) 90° (1997) 0.1" NA
Nov 3 42° 71° 32° (1994) 87° (1976) 0.1" NA
Nov 4 42° 71° 31° (1973) 88° (1997) 0.11" NA
Nov 5 42° 70° 35° (1974) 84° (1993) 0.11" NA
Nov 6 41° 70° 34° (1986) 85° (1991) 0.11" NA
Nov 7 41° 69° 36° (1989) 81° (1991) 0.12" NA
Nov 8 41° 69° 33° (1983) 86° (1978) 0.12" NA
Nov 9 41° 69° 32° (1975) 85° (1978) 0.12" NA
Nov 10 41° 68° 30° (1978) 78° (1996) 0.12" NA
Nov 11 40° 68° 30° (1978) 79° (1986) 0.13" NA
Nov 12 40° 67° 29° (1978) 82° (1995) 0.13" NA
Nov 13 40° 67° 26° (1985) 86° (1995) 0.13" NA
Nov 14 40° 67° 27° (1985) 79° (1995) 0.13" NA
Nov 15 40° 66° 27° (1987) 76° (1992) 0.14" NA
Nov 16 39° 66° 29° (1978) 78° (1989) 0.14" NA
Nov 17 39° 65° 31° (2000) 76° (1976) 0.14" NA
Nov 18 39° 65° 30° (1994) 77° (1989) 0.14" NA
Nov 19 39° 65° 27° (1975) 79° (1989) 0.14" NA
Nov 20 39° 65° 29° (1979) 79° (1989) 0.14" NA
Nov 21 39° 64° 29° (1979) 72° (2002) 0.14" NA
Nov 22 38° 64° 30° (1975) 72° (1995) 0.14" NA
Nov 23 38° 64° 28° (1993) 78° (1995) 0.14" NA
Nov 24 38° 63° 27° (1993) 75° (1995) 0.14" NA
Nov 25 38° 63° 26° (1993) 79° (1995) 0.14" NA
Nov 26 38° 63° 24° (1987) 79° (2002) 0.14" NA
Nov 27 38° 63° 23° (1987) 79° (2002) 0.14" NA
Nov 28 37° 62° 27° (1976) 77° (1995) 0.14" NA
Nov 29 37° 62° 28° (1976) 77° (1995) 0.14" NA
Nov 30 37° 62° 28° (2004) 75° (2002) 0.14" NA
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