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
Apr 1 48° 73° 37° (1981) 88° (2003) 0.07" NA
Apr 2 48° 73° 36° (1999) 91° (1985) 0.07" NA
Apr 3 48° 73° 39° (1980) 85° (1993) 0.06" NA
Apr 4 48° 73° 39° (2003) 98° (1989) 0.06" NA
Apr 5 48° 73° 38° (1999) 99° (1989) 0.06" NA
Apr 6 49° 74° 39° (1980) 102° (1989) 0.05" NA
Apr 7 49° 74° 38° (1983) 103° (1989) 0.05" NA
Apr 8 49° 74° 39° (1983) 95° (1989) 0.05" NA
Apr 9 49° 74° 41° (2001) 90° (1989) 0.05" NA
Apr 10 49° 74° 41° (2001) 91° (1988) 0.04" NA
Apr 11 49° 74° 36° (1999) 90° (1988) 0.04" NA
Apr 12 49° 75° 40° (1991) 88° (1988) 0.04" NA
Apr 13 49° 75° 42° (1982) 89° (1985) 0.04" NA
Apr 14 50° 75° 40° (1983) 89° (1987) 0.03" NA
Apr 15 50° 75° 42° (1983) 87° (1984) 0.03" NA
Apr 16 50° 75° 42° (1998) 90° (1999) 0.03" NA
Apr 17 50° 75° 43° (1998) 92° (1999) 0.03" NA
Apr 18 50° 75° 45° (1986) 90° (1999) 0.03" NA
Apr 19 50° 75° 43° (2005) 93° (1999) 0.02" NA
Apr 20 50° 75° 44° (1995) 91° (1999) 0.02" NA
Apr 21 50° 76° 43° (1984) 91° (1987) 0.02" NA
Apr 22 51° 76° 42° (2001) 93° (1987) 0.02" NA
Apr 23 51° 76° 45° (1980) 88° (1996) 0.02" NA
Apr 24 51° 76° 43° (1980) 92° (1992) 0.02" NA
Apr 25 51° 76° 45° (1989) 92° (1992) 0.02" NA
Apr 26 51° 76° 45° (1989) 100° (2004) 0.02" NA
Apr 27 51° 76° 44° (1985) 100° (2004) 0.02" NA
Apr 28 52° 76° 44° (1984) 92° (1992) 0.01" NA
Apr 29 52° 76° 46° (1985) 93° (1996) 0.01" NA
Apr 30 52° 76° 48° (1985) 95° (1996) 0.01" NA
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