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
Mar 1 40° 65° 31° (1987) 78° (2002) 0.19" NA
Mar 2 40° 65° 30° (1977) 79° (1994) 0.19" NA
Mar 3 40° 65° 29° (1989) 76° (1986) 0.18" NA
Mar 4 40° 65° 30° (1974) 80° (1986) 0.18" NA
Mar 5 40° 66° 28° (1976) 76° (1986) 0.18" NA
Mar 6 40° 66° 29° (1976) 78° (1979) 0.18" NA
Mar 7 40° 66° 30° (1999) 82° (2004) 0.17" NA
Mar 8 40° 66° 31° (1974) 86° (2004) 0.17" NA
Mar 9 40° 66° 30° (1974) 88° (2004) 0.17" NA
Mar 10 41° 66° 30° (1974) 88° (2004) 0.17" NA
Mar 11 41° 66° 30° (2006) 88° (2004) 0.16" NA
Mar 12 41° 66° 32° (1976) 88° (2005) 0.16" NA
Mar 13 41° 66° 31° (1975) 87° (2004) 0.16" NA
Mar 14 41° 66° 29° (1977) 87° (2004) 0.16" NA
Mar 15 41° 67° 33° (1973) 88° (2004) 0.15" NA
Mar 16 41° 67° 35° (1987) 91° (2004) 0.15" NA
Mar 17 41° 67° 33° (1977) 91° (2004) 0.15" NA
Mar 18 41° 67° 32° (1977) 89° (2004) 0.14" NA
Mar 19 41° 67° 32° (2002) 85° (2004) 0.14" NA
Mar 20 41° 67° 31° (1987) 88° (2004) 0.14" NA
Mar 21 41° 67° 34° (1975) 82° (2004) 0.13" NA
Mar 22 41° 68° 33° (1973) 80° (1997) 0.13" NA
Mar 23 41° 68° 32° (1994) 83° (2007) 0.13" NA
Mar 24 41° 68° 32° (1987) 84° (1997) 0.12" NA
Mar 25 41° 68° 32° (1976) 88° (1997) 0.12" NA
Mar 26 41° 68° 31° (1985) 81° (1986) 0.12" NA
Mar 27 41° 69° 34° (1975) 84° (1986) 0.11" NA
Mar 28 41° 69° 32° (1975) 83° (1986) 0.11" NA
Mar 29 41° 69° 31° (1977) 85° (2007) 0.11" NA
Mar 30 41° 69° 33° (1977) 85° (2003) 0.1" NA
Mar 31 41° 69° 30° (1977) 86° (2002) 0.1" NA
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