Portola Valley, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 37° 61° 20° (1976) 75° (1984) 5.98" NA
February 39° 64° 17° (1989) 84° (1995) 6.21" NA
March 41° 68° 28° (1976) 91° (2004) 4.29" NA
April 43° 73° 30° (1976) 99° (1996) 1.85" NA
May 46° 79° 33° (1986) 105° (2001) 0.76" NA
June 49° 84° 36° (1982) 108° (1995) 0.15" NA
July 52° 89° 35° (1981) 114° (2006) 0.01" NA
August 51° 88° 38° (1987) 110° (1993) 0.06" NA
September 50° 87° 38° (1987) 108° (2000) 0.17" NA
October 46° 79° 30° (2007) 106° (1996) 1.14" NA
November 40° 67° 23° (1987) 90° (1997) 3.7" NA
December 36° 60° 22° (1985) 76° (1988) 5.47" 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) 0.23" NA
Feb 3 38° 62° 25° (1979) 76° (2009) 0.24" NA
Feb 4 39° 63° 29° (2002) 80° (2001) 0.24" NA
Feb 5 39° 63° 26° (1982) 75° (2001) 0.25" NA
Feb 6 39° 63° 17° (1989) 74° (2006) 0.24" NA
Feb 7 39° 63° 18° (1989) 76° (1987) 0.24" NA
Feb 8 39° 63° 23° (1989) 78° (2006) 0.23" NA
Feb 9 39° 63° 28° (1986) 79° (2006) 0.23" NA
Feb 10 39° 64° 27° (1989) 79° (2006) 0.22" NA
Feb 11 39° 64° 29° (1976) 78° (1996) 0.22" NA
Feb 12 39° 64° 27° (1994) 82° (1996) 0.22" NA
Feb 13 39° 64° 29° (1994) 80° (1996) 0.21" NA
Feb 14 39° 64° 29° (1994) 82° (1977) 0.22" NA
Feb 15 39° 64° 22° (1990) 78° (1977) 0.21" NA
Feb 16 39° 65° 28° (2006) 76° (1977) 0.21" NA
Feb 17 40° 65° 31° (1974) 78° (2007) 0.22" NA
Feb 18 40° 65° 27° (1990) 80° (1977) 0.21" NA
Feb 19 40° 65° 27° (1990) 78° (1995) 0.21" NA
Feb 20 40° 65° 28° (1990) 79° (1995) 0.21" NA
Feb 21 40° 65° 29° (1975) 84° (1995) 0.2" NA
Feb 22 40° 66° 30° (1975) 81° (1995) 0.21" NA
Feb 23 40° 66° 29° (1975) 78° (1985) 0.19" NA
Feb 24 40° 66° 29° (1987) 76° (1986) 0.2" NA
Feb 25 40° 66° 29° (1987) 80° (1992) 0.19" NA
Feb 26 40° 66° 28° (1987) 84° (1986) 0.19" NA
Feb 27 40° 66° 30° (1987) 81° (1992) 0.19" NA
Feb 28 40° 67° 32° (1987) 84° (1986) 0.18" NA
Feb 29 40° 67° 36° (2004) 73° (2008) 0.18" NA
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