Portola, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -8° -30° (1971) 18.9° (1961) 4.17" 16.1"
February -6° -29.4° (1949) 22.2° (1986) 3.87" 12.8"
March -3° -24.4° (1952) 26.7° (1966) 3.61" 10.2"
April -2° 14° -15.6° (1975) 29.4° (1981) 1.23" 4"
May 19° -10.6° (1950) 34.4° (2003) 1.12" 1.1"
June 24° -6.7° (2002) 43.9° (2006) 0.54" 0"
July 29° -5.6° (1976) 39.4° (2002) 0.34" 0"
August 29° -5° (1960) 41.7° (1981) 0.43" 0"
September 24° -10° (1950) 37.8° (1955) 0.78" 0.1"
October -2° 18° -12.8° (1971) 33.3° (1980) 1.22" 0.2"
November -5° 10° -17.8° (1975) 24.4° (1949) 2.5" 5.6"
December -8° -33.3° (1972) 21.1° (1958) 3.28" 18.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Nov 1 -3.9° 13.9° -10° (2003) 24° (1949) 0.06" NA
Nov 2 -3.9° 13.3° -12° (2002) 24° (1949) 0.06" NA
Nov 3 -3.9° 13.3° -9° (1994) 24° (1949) 0.07" NA
Nov 4 -3.9° 12.8° -11° (2002) 23° (1976) 0.07" NA
Nov 5 -3.9° 12.8° -9° (2002) 24° (1949) 0.07" NA
Nov 6 -4.4° 12.2° -12° (1959) 22° (1949) 0.07" NA
Nov 7 -4.4° 11.7° -10° (1959) 22° (1991) 0.07" NA
Nov 8 -4.4° 11.7° -9° (1959) 23° (1991) 0.08" NA
Nov 9 -4.4° 11.1° -11° (1948) 23° (1956) 0.08" NA
Nov 10 -4.4° 11.1° -10° (1992) 22° (1956) 0.08" NA
Nov 11 -4.4° 10.6° -12° (1975) 22° (1990) 0.08" NA
Nov 12 -5° 10.6° -14° (1978) 21° (1996) 0.08" NA
Nov 13 -5° 10° -17° (1985) 21° (1990) 0.08" NA
Nov 14 -5° 10° -15° (1985) 22° (1999) 0.08" NA
Nov 15 -5° 9.4° -15° (1978) 23° (1995) 0.09" NA
Nov 16 -5° 9.4° -12° (1960) 20° (1959) 0.09" NA
Nov 17 -5.6° 9.4° -17° (1958) 19° (1967) 0.09" NA
Nov 18 -5.6° 8.9° -17° (1964) 21° (1995) 0.09" NA
Nov 19 -5.6° 8.9° -16° (1985) 19° (1949) 0.09" NA
Nov 20 -5.6° 8.3° -16° (1985) 20° (1955) 0.09" NA
Nov 21 -5.6° 8.3° -16° (1985) 19° (1995) 0.09" NA
Nov 22 -5.6° 8.3° -16° (1985) 19° (1954) 0.09" NA
Nov 23 -6.1° 7.8° -17° (1966) 18° (1949) 0.09" NA
Nov 24 -6.1° 7.8° -17° (1966) 21° (1995) 0.09" NA
Nov 25 -6.1° 7.8° -16° (1966) 21° (1949) 0.09" NA
Nov 26 -6.1° 7.2° -16° (1965) 20° (1958) 0.09" NA
Nov 27 -6.1° 7.2° -15° (1990) 18° (1949) 0.09" NA
Nov 28 -6.7° 7.2° -16° (2004) 18° (1951) 0.1" NA
Nov 29 -6.7° 7.2° -18° (1975) 19° (1958) 0.1" NA
Nov 30 -6.7° 6.7° -15° (1954) 20° (1958) 0.1" NA
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