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
Oct 1 52° 80° 39° (1971) 99° (1970) 0.01" NA
Oct 2 52° 80° 41° (1971) 101° (1980) 0.01" NA
Oct 3 52° 80° 43° (1971) 103° (1980) 0.01" NA
Oct 4 52° 80° 44° (1986) 99° (1991) 0.01" NA
Oct 5 51° 79° 44° (2007) 99° (1987) 0.01" NA
Oct 6 51° 79° 44° (1974) 96° (1987) 0.01" NA
Oct 7 51° 79° 40° (2007) 94° (1996) 0.02" NA
Oct 8 51° 79° 42° (1975) 96° (1996) 0.02" NA
Oct 9 51° 78° 40° (1985) 100° (1996) 0.02" NA
Oct 10 51° 78° 43° (1973) 92° (1992) 0.02" NA
Oct 11 50° 78° 41° (1985) 98° (1991) 0.02" NA
Oct 12 50° 77° 41° (1985) 91° (1976) 0.02" NA
Oct 13 50° 77° 38° (1985) 92° (1978) 0.02" NA
Oct 14 50° 77° 39° (1985) 91° (1991) 0.02" NA
Oct 15 50° 76° 38° (1985) 90° (1991) 0.03" NA
Oct 16 50° 76° 40° (1985) 90° (1974) 0.03" NA
Oct 17 49° 75° 37° (1971) 92° (1988) 0.03" NA
Oct 18 49° 75° 36° (1971) 89° (1974) 0.03" NA
Oct 19 49° 75° 39° (1971) 88° (1974) 0.03" NA
Oct 20 49° 74° 40° (1990) 89° (1991) 0.03" NA
Oct 21 49° 74° 40° (1971) 91° (1991) 0.04" NA
Oct 22 48° 73° 39° (1971) 86° (2003) 0.04" NA
Oct 23 48° 73° 42° (1984) 85° (1978) 0.04" NA
Oct 24 48° 73° 41° (1971) 85° (2003) 0.04" NA
Oct 25 48° 72° 36° (1971) 89° (2003) 0.05" NA
Oct 26 48° 72° 38° (1971) 89° (2003) 0.05" NA
Oct 27 47° 71° 38° (1970) 89° (1993) 0.05" NA
Oct 28 47° 71° 38° (2004) 88° (2003) 0.05" NA
Oct 29 47° 70° 37° (1975) 88° (2003) 0.06" NA
Oct 30 47° 70° 34° (1971) 82° (1993) 0.06" NA
Oct 31 47° 69° 35° (1971) 80° (1973) 0.06" NA
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