San Dimas, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 43° 68° 21° (1963) 91° (2003) 3.11" 0"
February 45° 69° 23° (1989) 94° (1995) 4.76" 0"
March 47° 71° 26° (1948) 100° (1988) 2.63" 0"
April 49° 76° 29° (1953) 104° (1989) 1.2" 0"
May 54° 79° 34° (1950) 106° (1984) 0.23" 0"
June 58° 84° 39° (1953) 106° (1950) 0.09" 0"
July 62° 90° 41° (1948) 113° (2006) 0" 0"
August 62° 92° 43° (1950) 109° (1967) 0.03" 0"
September 60° 89° 38° (1948) 113° (1948) 0.15" 0"
October 55° 80° 29° (1935) 107° (1950) 1.05" 0"
November 47° 74° 24° (1938) 97° (1976) 1.62" 0"
December 42° 68° 22° (1990) 93° (1979) 2.45" 0"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 52° 78° 37° (1933) 99° (1947) 0.02" 0"
May 2 52° 78° 38° (1951) 101° (2004) 0.01" 0"
May 3 53° 78° 35° (1933) 103° (2004) 0.02" 0"
May 4 53° 78° 34° (1950) 97° (1928) 0.01" 0"
May 5 53° 78° 36° (1950) 100° (1928) 0.01" 0"
May 6 53° 78° 37° (1950) 98° (1990) 0.01" 0"
May 7 53° 78° 36° (1933) 98° (1941) 0.01" 0"
May 8 53° 78° 34° (1950) 98° (1984) 0" 0"
May 9 54° 78° 36° (1950) 101° (1940) 0.01" 0"
May 10 54° 78° 36° (1930) 103° (1934) 0.01" 0"
May 11 54° 79° 36° (1933) 99° (1934) 0.01" 0"
May 12 54° 79° 39° (1953) 97° (1937) 0" 0"
May 13 54° 79° 39° (1930) 97° (1937) 0.01" 0"
May 14 54° 79° 38° (1930) 99° (1937) 0" 0"
May 15 54° 79° 38° (1955) 96° (1948) 0.01" 0"
May 16 54° 79° 37° (1943) 101° (1956) 0" 0"
May 17 54° 79° 38° (1943) 101° (2008) 0.01" 0"
May 18 55° 79° 38° (1945) 102° (2008) 0" 0"
May 19 55° 79° 39° (1933) 100° (1942) 0.01" 0"
May 20 55° 79° 35° (1948) 105° (1942) 0" 0"
May 21 55° 79° 34° (1948) 98° (2003) 0.01" 0"
May 22 55° 79° 38° (1933) 98° (2005) 0" 0"
May 23 55° 79° 39° (1939) 99° (1949) 0.01" 0"
May 24 55° 79° 40° (1939) 96° (1939) 0.01" 0"
May 25 55° 79° 39° (1953) 96° (1939) 0" 0"
May 26 55° 80° 36° (1953) 100° (1968) 0.01" 0"
May 27 55° 80° 38° (1953) 99° (1968) 0.01" 0"
May 28 55° 80° 40° (1929) 101° (1984) 0" 0"
May 29 55° 80° 39° (1953) 106° (1984) 0.01" 0"
May 30 55° 80° 38° (1929) 104° (1984) 0" 0"
May 31 55° 80° 40° (1949) 96° (1938) 0.01" 0"
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