Hillsborough, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 44° 56° 26° (1949) 72° (1948) 4.19" 0"
February 46° 60° 30° (1950) 77° (1986) 4.2" 0"
March 48° 62° 31° (1966) 85° (1952) 2.96" 0"
April 49° 65° 36° (1955) 92° (1989) 1.29" 0"
May 52° 68° 39° (1950) 97° (1984) 0.47" 0"
June 54° 71° 43° (1954) 106° (1961) 0.11" 0"
July 55° 72° 44° (1951) 105° (1988) 0" 0"
August 56° 73° 45° (1955) 100° (1993) 0.04" 0"
September 56° 74° 41° (1950) 103° (1971) 0.17" 0"
October 53° 70° 37° (1949) 99° (1987) 0.95" 0"
November 49° 63° 31° (1954) 85° (1967) 2.38" 0"
December 45° 57° 24° (1972) 75° (1958) 4.03" 0"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 50° 66° 44° (2008) 89° (1947) 0.03" 0"
May 2 50° 66° 42° (1954) 84° (1992) 0.02" 0"
May 3 51° 67° 39° (1950) 79° (1953) 0.02" 0"
May 4 51° 67° 40° (1952) 83° (1957) 0.03" 0"
May 5 51° 67° 41° (1965) 91° (1987) 0.02" 0"
May 6 51° 67° 41° (1968) 87° (1949) 0.02" 0"
May 7 51° 67° 40° (1968) 89° (2007) 0.01" 0"
May 8 51° 67° 44° (1968) 86° (2001) 0.02" 0"
May 9 51° 67° 41° (1950) 88° (1993) 0.02" 0"
May 10 51° 67° 43° (1953) 84° (2006) 0.01" 0"
May 11 51° 67° 42° (1982) 85° (1959) 0.02" 0"
May 12 51° 67° 42° (1953) 96° (1976) 0.02" 0"
May 13 51° 67° 45° (1968) 90° (1976) 0.01" 0"
May 14 52° 67° 41° (1968) 87° (2006) 0.02" 0"
May 15 52° 68° 43° (1968) 96° (2008) 0.01" 0"
May 16 52° 68° 44° (1984) 93° (1956) 0.02" 0"
May 17 52° 68° 45° (1966) 93° (2009) 0.01" 0"
May 18 52° 68° 42° (1974) 85° (1978) 0.02" 0"
May 19 52° 68° 42° (1950) 86° (1983) 0.01" 0"
May 20 52° 68° 45° (1982) 93° (1988) 0.01" 0"
May 21 52° 68° 45° (1974) 92° (2000) 0.01" 0"
May 22 52° 68° 44° (1952) 83° (1954) 0.02" 0"
May 23 52° 68° 46° (1954) 88° (2000) 0.01" 0"
May 24 52° 68° 45° (1953) 91° (1982) 0.01" 0"
May 25 52° 68° 45° (1967) 87° (1951) 0.01" 0"
May 26 52° 69° 42° (1953) 89° (1974) 0.01" 0"
May 27 53° 69° 42° (1954) 97° (1984) 0.01" 0"
May 28 53° 69° 45° (1955) 92° (1984) 0.01" 0"
May 29 53° 69° 45° (1951) 94° (1975) 0.01" 0"
May 30 53° 69° 46° (1974) 95° (2001) 0.01" 0"
May 31 53° 69° 46° (1962) 91° (2001) 0.01" 0"
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