San Bruno, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 43° 56° 26° (1949) 72° (1948) 4.45" 0"
February 46° 59° 30° (1950) 77° (1986) 4.01" 0"
March 47° 61° 31° (1966) 85° (1952) 3.26" 0"
April 48° 64° 36° (1955) 92° (1989) 1.18" 0"
May 51° 67° 39° (1950) 97° (1984) 0.38" 0"
June 53° 70° 43° (1954) 106° (1961) 0.11" 0"
July 55° 71° 44° (1951) 105° (1988) 0.03" 0"
August 56° 72° 45° (1955) 100° (1993) 0.07" 0"
September 55° 73° 41° (1950) 103° (1971) 0.2" 0"
October 52° 70° 37° (1949) 99° (1987) 1.04" 0"
November 48° 62° 31° (1954) 85° (1967) 2.49" 0"
December 43° 56° 24° (1972) 75° (1958) 2.89" 0"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 56° 72° 49° (1981) 94° (1955) 0" NA
Sep 2 56° 72° 49° (1946) 93° (1950) 0" NA
Sep 3 56° 72° 50° (1970) 93° (1961) 0" NA
Sep 4 56° 73° 50° (1989) 92° (2004) 0" NA
Sep 5 56° 73° 45° (1954) 94° (2004) 0" NA
Sep 6 56° 73° 47° (1950) 94° (2004) 0" NA
Sep 7 56° 73° 50° (1960) 93° (1957) 0" NA
Sep 8 55° 73° 48° (1946) 100° (1984) 0" NA
Sep 9 55° 73° 46° (1946) 92° (1951) 0" NA
Sep 10 55° 73° 49° (1947) 94° (1979) 0" NA
Sep 11 55° 73° 49° (1951) 98° (1979) 0.01" NA
Sep 12 55° 73° 47° (1970) 100° (1979) 0.01" NA
Sep 13 55° 73° 47° (1947) 101° (1971) 0.01" NA
Sep 14 55° 73° 46° (1947) 103° (1971) 0.01" NA
Sep 15 55° 73° 48° (1970) 98° (1971) 0.01" NA
Sep 16 55° 73° 49° (2006) 90° (1968) 0.01" NA
Sep 17 55° 73° 50° (1988) 94° (1984) 0.01" NA
Sep 18 55° 73° 46° (1955) 92° (1984) 0.01" NA
Sep 19 55° 73° 46° (1954) 93° (2000) 0.01" NA
Sep 20 55° 73° 48° (1965) 93° (1990) 0.01" NA
Sep 21 55° 73° 45° (1955) 95° (2003) 0.01" NA
Sep 22 55° 73° 48° (1981) 91° (1946) 0.01" NA
Sep 23 55° 73° 45° (1972) 92° (1978) 0.01" NA
Sep 24 55° 73° 48° (1955) 93° (1978) 0.01" NA
Sep 25 55° 72° 47° (1972) 91° (1970) 0.01" NA
Sep 26 55° 72° 46° (1948) 95° (1958) 0.01" NA
Sep 27 54° 72° 47° (1955) 96° (1958) 0.01" NA
Sep 28 54° 72° 47° (1947) 93° (1966) 0.01" NA
Sep 29 54° 72° 45° (1955) 93° (1966) 0.01" NA
Sep 30 54° 72° 41° (1950) 94° (2001) 0.01" NA
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