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
Feb 1 38° 62° 27° (1985) 77° (1976) 0.22" NA
Feb 2 38° 62° 28° (1979) 78° (1976) 0.22" NA
Feb 3 38° 62° 25° (1979) 75° (1984) 0.22" NA
Feb 4 38° 62° 29° (2002) 72° (1984) 0.22" NA
Feb 5 38° 63° 26° (1982) 72° (1987) 0.22" NA
Feb 6 38° 63° 17° (1989) 74° (2006) 0.21" NA
Feb 7 38° 63° 18° (1989) 76° (1987) 0.21" NA
Feb 8 38° 63° 23° (1989) 78° (2006) 0.21" NA
Feb 9 39° 63° 28° (1986) 79° (2006) 0.21" NA
Feb 10 39° 63° 27° (1989) 79° (2006) 0.21" NA
Feb 11 39° 63° 29° (1976) 78° (1996) 0.21" NA
Feb 12 39° 64° 27° (1994) 82° (1996) 0.21" NA
Feb 13 39° 64° 29° (1994) 80° (1996) 0.21" NA
Feb 14 39° 64° 29° (1994) 82° (1977) 0.21" NA
Feb 15 39° 64° 22° (1990) 78° (1977) 0.21" NA
Feb 16 39° 64° 28° (2006) 76° (1977) 0.21" NA
Feb 17 39° 64° 31° (1974) 78° (2007) 0.21" NA
Feb 18 39° 64° 27° (1990) 80° (1977) 0.21" NA
Feb 19 39° 64° 27° (1990) 78° (1995) 0.2" NA
Feb 20 39° 65° 28° (1990) 79° (1995) 0.2" NA
Feb 21 40° 65° 29° (1975) 84° (1995) 0.2" NA
Feb 22 40° 65° 30° (1975) 81° (1995) 0.2" NA
Feb 23 40° 65° 29° (1975) 78° (1985) 0.2" NA
Feb 24 40° 65° 29° (1987) 76° (1986) 0.2" NA
Feb 25 40° 65° 29° (1987) 80° (1992) 0.19" NA
Feb 26 40° 65° 28° (1987) 84° (1986) 0.19" NA
Feb 27 40° 65° 30° (1987) 81° (1992) 0.19" NA
Feb 28 40° 65° 32° (1987) 84° (1986) 0.19" NA
Feb 29 40° 65° 36° (2004) 69° (1988) 0.19" NA
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