Portola, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 18° 41° -22° (1971) 66° (1961) 4.17" 16.1"
February 21° 45° -21° (1949) 72° (1986) 3.87" 12.8"
March 26° 49° -12° (1952) 80° (1966) 3.61" 10.2"
April 29° 57° 4° (1975) 85° (1981) 1.23" 4"
May 34° 66° 13° (1950) 94° (2003) 1.12" 1.1"
June 39° 76° 20° (2002) 111° (2006) 0.54" 0"
July 42° 84° 22° (1976) 103° (2002) 0.34" 0"
August 40° 84° 23° (1960) 107° (1981) 0.43" 0"
September 35° 76° 14° (1950) 100° (1955) 0.78" 0.1"
October 29° 65° 9° (1971) 92° (1980) 1.22" 0.2"
November 23° 50° 0° (1975) 76° (1949) 2.5" 5.6"
December 18° 42° -28° (1972) 70° (1958) 3.28" 18.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Mar 1 23° 47° -3° (1955) 69° (1986) 0.14" NA
Mar 2 24° 47° -3° (1966) 64° (1968) 0.14" NA
Mar 3 24° 47° -4° (1951) 63° (1950) 0.14" NA
Mar 4 24° 47° 1° (1976) 71° (1950) 0.14" NA
Mar 5 24° 47° 0° (1952) 69° (1972) 0.14" NA
Mar 6 24° 48° -6° (1956) 62° (1979) 0.13" NA
Mar 7 24° 48° 2° (1956) 68° (1979) 0.13" NA
Mar 8 25° 48° 4° (1985) 70° (1972) 0.13" NA
Mar 9 25° 48° 5° (1962) 70° (1972) 0.13" NA
Mar 10 25° 48° 0° (1969) 69° (2005) 0.13" NA
Mar 11 25° 48° 7° (2006) 69° (2007) 0.13" NA
Mar 12 25° 49° 7° (1950) 72° (2005) 0.13" NA
Mar 13 25° 49° 1° (1952) 68° (2005) 0.13" NA
Mar 14 26° 49° 6° (1962) 70° (2004) 0.13" NA
Mar 15 26° 49° 6° (1958) 74° (1994) 0.12" NA
Mar 16 26° 49° 9° (1969) 74° (2007) 0.12" NA
Mar 17 26° 50° 10° (1966) 71° (2007) 0.12" NA
Mar 18 26° 50° 7° (1963) 72° (2004) 0.12" NA
Mar 19 26° 50° 13° (1987) 72° (1972) 0.11" NA
Mar 20 26° 50° -12° (1952) 71° (1960) 0.11" NA
Mar 21 26° 50° -8° (1952) 77° (2004) 0.11" NA
Mar 22 26° 51° -3° (1952) 73° (2004) 0.11" NA
Mar 23 27° 51° -1° (1952) 73° (1960) 0.1" NA
Mar 24 27° 51° 12° (1963) 74° (1960) 0.1" NA
Mar 25 27° 51° 10° (1995) 72° (1960) 0.1" NA
Mar 26 27° 51° 10° (1995) 71° (1988) 0.1" NA
Mar 27 27° 52° 12° (1995) 72° (1966) 0.09" NA
Mar 28 27° 52° 12° (1976) 75° (1966) 0.09" NA
Mar 29 27° 52° 11° (1985) 75° (1966) 0.08" NA
Mar 30 27° 52° 9° (1955) 78° (1966) 0.08" NA
Mar 31 27° 53° 13° (1999) 80° (1966) 0.08" NA
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