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
Sep 1 63° 89° 55° (1989) 106° (2002) 0" NA
Sep 2 63° 88° 56° (1989) 105° (1982) 0" NA
Sep 3 63° 88° 56° (1989) 108° (1988) 0" NA
Sep 4 63° 88° 54° (2000) 107° (1988) 0" NA
Sep 5 62° 88° 56° (2000) 108° (1984) 0" NA
Sep 6 62° 88° 54° (1985) 102° (1984) 0" NA
Sep 7 62° 88° 55° (1987) 101° (1984) 0" NA
Sep 8 62° 88° 56° (1989) 102° (1984) 0" NA
Sep 9 62° 88° 51° (2000) 101° (1984) 0.01" NA
Sep 10 62° 88° 51° (2000) 102° (1979) 0.01" NA
Sep 11 62° 88° 54° (1991) 105° (1979) 0.01" NA
Sep 12 62° 88° 50° (1985) 103° (2000) 0.01" NA
Sep 13 62° 87° 54° (1985) 100° (1979) 0.01" NA
Sep 14 61° 87° 51° (1985) 100° (1979) 0.01" NA
Sep 15 61° 87° 51° (1994) 104° (1979) 0.01" NA
Sep 16 61° 87° 53° (1986) 106° (2000) 0.01" NA
Sep 17 61° 87° 55° (1982) 100° (2000) 0.01" NA
Sep 18 61° 87° 52° (1993) 100° (1979) 0.01" NA
Sep 19 61° 87° 53° (1985) 99° (1979) 0.01" NA
Sep 20 61° 86° 51° (1989) 97° (1979) 0.01" NA
Sep 21 60° 86° 50° (2007) 97° (1992) 0.01" NA
Sep 22 60° 86° 50° (1986) 99° (1992) 0.01" NA
Sep 23 60° 86° NA (2001) 101° (1982) 0.01" NA
Sep 24 60° 86° 50° (1993) 102° (1992) 0.01" NA
Sep 25 60° 86° 50° (2007) 97° (1989) 0.01" NA
Sep 26 60° 85° 53° (1986) 98° (1989) 0.01" NA
Sep 27 59° 85° 50° (1986) 100° (1993) 0.01" NA
Sep 28 59° 85° 51° (1986) 98° (1993) 0.01" NA
Sep 29 59° 85° 52° (1986) 104° (1992) 0.01" NA
Sep 30 59° 85° 49° (1982) 102° (1980) 0.01" NA
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