San Marcos, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 42° 68° 25° (2007) 92° (2003) 3.37" NA
February 45° 69° 27° (1990) 94° (1988) 3.16" NA
March 47° 70° 33° (1985) 97° (1988) 3.3" NA
April 50° 75° 36° (1999) 103° (1989) 1.04" NA
May 54° 77° 31° (2003) 103° (2004) 0.27" NA
June 58° 84° 41° (2003) 105° (1994) 0.11" NA
July 61° 89° 52° (1980) 112° (2006) 0.07" NA
August 63° 89° 54° (1991) 109° (1994) 0.02" NA
September 61° 87° 49° (1982) 108° (1988) 0.22" NA
October 55° 81° 39° (1981) 105° (1991) 0.44" NA
November 46° 74° 29° (1979) 98° (1997) 1.32" NA
December 42° 69° 26° (1990) 90° (1980) 1.78" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 43° 71° 29° (1991) 84° (1979) 0.05" NA
Dec 2 43° 71° 32° (1991) 82° (1988) 0.05" NA
Dec 3 43° 70° 32° (1982) 82° (1979) 0.05" NA
Dec 4 43° 70° 35° (2004) 90° (1979) 0.05" NA
Dec 5 42° 70° 35° (1983) 87° (1979) 0.05" NA
Dec 6 42° 70° 35° (1983) 89° (1979) 0.05" NA
Dec 7 42° 70° 32° (1998) 86° (1989) 0.05" NA
Dec 8 42° 70° 36° (1998) 86° (1990) 0.05" NA
Dec 9 42° 70° 31° (1994) 82° (1990) 0.05" NA
Dec 10 42° 70° 32° (1979) 83° (1987) 0.05" NA
Dec 11 42° 70° 35° (1986) 83° (2004) 0.05" NA
Dec 12 42° 69° 30° (1985) 82° (1988) 0.05" NA
Dec 13 42° 69° 31° (1985) 83° (1998) 0.05" NA
Dec 14 42° 69° 34° (1979) 80° (1996) 0.05" NA
Dec 15 41° 69° 29° (1987) 82° (1980) 0.05" NA
Dec 16 41° 69° 33° (1979) 88° (1980) 0.05" NA
Dec 17 41° 69° 32° (1984) 85° (1998) 0.05" NA
Dec 18 41° 69° 34° (1982) 82° (1979) 0.05" NA
Dec 19 41° 69° 32° (2006) 82° (2004) 0.06" NA
Dec 20 41° 69° 29° (1992) 81° (1999) 0.06" NA
Dec 21 41° 69° 32° (1992) 80° (1980) 0.06" NA
Dec 22 41° 69° 31° (1990) 81° (1989) 0.06" NA
Dec 23 41° 69° 26° (1990) 89° (1989) 0.06" NA
Dec 24 41° 68° 30° (1987) 87° (1989) 0.06" NA
Dec 25 41° 68° 28° (1987) 83° (1989) 0.07" NA
Dec 26 41° 68° 27° (1987) 80° (1980) 0.07" NA
Dec 27 41° 68° 30° (1987) 80° (1980) 0.07" NA
Dec 28 41° 68° 28° (2007) 78° (1997) 0.07" NA
Dec 29 41° 68° 32° (1988) 90° (1980) 0.08" NA
Dec 30 41° 68° 30° (1988) 86° (1980) 0.08" NA
Dec 31 42° 68° 29° (1982) 81° (1980) 0.08" NA
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