Walnut Creek, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 39° 54° 20° (2007) 71° (1984) 4.25" 0"
February 42° 60° 26° (1989) 80° (1985) 3.81" 0"
March 44° 64° 29° (1971) 88° (1988) 3.24" 0"
April 46° 71° 29° (1999) 98° (1996) 1.04" 0"
May 50° 78° 34° (1976) 104° (1997) 0.46" 0"
June 54° 84° 31° (1976) 110° (2000) 0.12" 0"
July 55° 87° 41° (1979) 115° (1972) 0.02" 0"
August 55° 87° 42° (1970) 107° (1998) 0.08" 0"
September 54° 83° 40° (2007) 108° (1971) 0.24" 0"
October 49° 75° 34° (1971) 103° (1980) 0.94" 0"
November 43° 63° 25° (1985) 82° (1997) 2.59" 0"
December 39° 55° 19° (1990) 74° (1999) 2.79" 0"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 48° 74° 43° (1973) 98° (1996) 0.02" NA
May 2 48° 75° 38° (2006) 95° (1996) 0.02" NA
May 3 48° 75° 42° (1975) 94° (1990) 0.02" NA
May 4 48° 75° 42° (1975) 98° (1990) 0.02" NA
May 5 48° 75° 40° (1975) 98° (1987) 0.02" NA
May 6 48° 76° 39° (1984) 103° (1987) 0.02" NA
May 7 48° 76° 41° (1975) 104° (1987) 0.02" NA
May 8 49° 76° 40° (1985) 96° (2001) 0.02" NA
May 9 49° 76° 41° (1985) 96° (2001) 0.02" NA
May 10 49° 76° 41° (1988) 97° (1987) 0.02" NA
May 11 49° 77° 42° (1982) 94° (1988) 0.02" NA
May 12 49° 77° 34° (1976) 97° (1972) 0.02" NA
May 13 49° 77° 42° (2004) 98° (1972) 0.02" NA
May 14 49° 77° 44° (1977) 99° (1987) 0.02" NA
May 15 49° 77° 43° (1984) 94° (1976) 0.02" NA
May 16 50° 78° 41° (1984) 95° (1970) 0.01" NA
May 17 50° 78° 41° (1976) 98° (1970) 0.01" NA
May 18 50° 78° 39° (1974) 104° (1997) 0.01" NA
May 19 50° 78° 42° (1991) 100° (1997) 0.01" NA
May 20 50° 79° 43° (1975) 97° (1988) 0.01" NA
May 21 50° 79° 42° (1974) 95° (1988) 0.01" NA
May 22 51° 79° 42° (1987) 100° (2001) 0.01" NA
May 23 51° 79° 44° (1987) 99° (1982) 0.01" NA
May 24 51° 79° 44° (1972) 100° (1982) 0.01" NA
May 25 51° 80° 44° (1980) 97° (1979) 0.01" NA
May 26 51° 80° 43° (1980) 99° (1974) 0.01" NA
May 27 51° 80° 43° (1977) 100° (1984) 0.01" NA
May 28 51° 80° 43° (1976) 104° (1984) 0.01" NA
May 29 52° 81° 42° (1991) 99° (1973) 0.01" NA
May 30 52° 81° 41° (1976) 98° (1975) 0.01" NA
May 31 52° 81° 44° (1971) 102° (2001) 0.01" NA
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