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
Jan 1 41° 68° 30° (1983) 79° (1998) 0.08" NA
Jan 2 42° 68° 31° (1983) 81° (1980) 0.09" NA
Jan 3 42° 68° 30° (1982) 82° (1994) 0.09" NA
Jan 4 42° 68° 28° (1993) 82° (2003) 0.09" NA
Jan 5 42° 68° 34° (2004) 85° (2006) 0.09" NA
Jan 6 42° 68° 35° (1998) 86° (2006) 0.1" NA
Jan 7 42° 68° 30° (1989) 82° (1996) 0.1" NA
Jan 8 42° 68° 31° (1982) 86° (2007) 0.1" NA
Jan 9 42° 68° 31° (1989) 86° (1990) 0.1" NA
Jan 10 42° 68° 30° (1989) 81° (1990) 0.1" NA
Jan 11 42° 68° 35° (1987) 86° (1996) 0.11" NA
Jan 12 42° 68° 37° (1987) 85° (1996) 0.11" NA
Jan 13 42° 68° 31° (2007) 82° (1983) 0.11" NA
Jan 14 42° 68° 31° (1989) 84° (1991) 0.11" NA
Jan 15 42° 68° 25° (2007) 82° (2000) 0.11" NA
Jan 16 43° 68° 30° (1987) 84° (2003) 0.11" NA
Jan 17 43° 69° 27° (1987) 83° (2003) 0.11" NA
Jan 18 43° 69° 31° (1984) 83° (1989) 0.11" NA
Jan 19 43° 69° 34° (2002) 84° (1989) 0.11" NA
Jan 20 43° 69° 31° (1988) 81° (2005) 0.12" NA
Jan 21 43° 69° 30° (1987) 78° (1994) 0.12" NA
Jan 22 43° 69° 32° (1987) 82° (1994) 0.12" NA
Jan 23 43° 69° 33° (1982) 78° (1990) 0.12" NA
Jan 24 43° 69° 32° (2007) 84° (1988) 0.12" NA
Jan 25 43° 69° 35° (1993) 85° (2003) 0.12" NA
Jan 26 43° 69° 34° (1981) 86° (1987) 0.12" NA
Jan 27 43° 69° 38° (1980) 85° (2003) 0.12" NA
Jan 28 43° 69° 35° (1994) 85° (2003) 0.12" NA
Jan 29 43° 69° 34° (1999) 86° (1984) 0.12" NA
Jan 30 43° 69° 30° (2002) 82° (2003) 0.12" NA
Jan 31 43° 69° 28° (2002) 92° (2003) 0.12" NA
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