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
Dec 1 40° 57° 29° (2006) 69° (1995) 0.09" NA
Dec 2 40° 57° 30° (1990) 72° (1975) 0.09" NA
Dec 3 40° 57° 30° (1990) 70° (1987) 0.09" NA
Dec 4 40° 57° 28° (2004) 69° (1977) 0.09" NA
Dec 5 39° 56° 28° (1972) 70° (1976) 0.08" NA
Dec 6 39° 56° 32° (2006) 70° (1995) 0.08" NA
Dec 7 39° 56° 31° (1978) 72° (1988) 0.08" NA
Dec 8 39° 56° 27° (1978) 71° (1988) 0.08" NA
Dec 9 39° 55° 20° (1972) 64° (1976) 0.08" NA
Dec 10 39° 55° 26° (1972) 67° (1987) 0.08" NA
Dec 11 39° 55° 22° (1972) 64° (1979) 0.08" NA
Dec 12 39° 55° 25° (1972) 67° (1996) 0.08" NA
Dec 13 38° 55° 26° (1972) 65° (1988) 0.08" NA
Dec 14 38° 55° 29° (1972) 67° (1988) 0.08" NA
Dec 15 38° 54° 29° (1971) 65° (2006) 0.08" NA
Dec 16 38° 54° 27° (1971) 64° (1986) 0.09" NA
Dec 17 38° 54° 29° (2006) 65° (1998) 0.09" NA
Dec 18 38° 54° 24° (2006) 65° (1996) 0.09" NA
Dec 19 38° 54° 24° (2006) 64° (1997) 0.09" NA
Dec 20 38° 54° 25° (2006) 74° (1999) 0.09" NA
Dec 21 38° 54° 22° (1990) 67° (1999) 0.09" NA
Dec 22 38° 53° 19° (1990) 70° (1999) 0.09" NA
Dec 23 38° 53° 21° (1990) 68° (1999) 0.09" NA
Dec 24 38° 53° 21° (1990) 64° (2004) 0.1" NA
Dec 25 38° 53° 24° (1990) 64° (1972) 0.1" NA
Dec 26 38° 53° 25° (1990) 63° (1972) 0.1" NA
Dec 27 38° 53° 27° (1990) 68° (1975) 0.1" NA
Dec 28 38° 53° 27° (1978) 68° (1975) 0.1" NA
Dec 29 38° 53° 27° (1990) 67° (1989) 0.11" NA
Dec 30 38° 53° 24° (1990) 66° (1975) 0.11" NA
Dec 31 38° 53° 27° (1978) 66° (1995) 0.11" NA
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