Walnut Creek, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 36° 55° 20° (2007) 71° (1984) 4.01" 0"
February 38° 61° 26° (1989) 80° (1985) 4.04" 0"
March 41° 66° 29° (1971) 88° (1988) 2.86" 0"
April 43° 72° 29° (1999) 98° (1996) 1.21" 0"
May 46° 79° 34° (1976) 104° (1997) 0.6" 0"
June 50° 85° 31° (1976) 110° (2000) 0.13" 0"
July 51° 89° 41° (1979) 115° (1972) 0" 0"
August 51° 88° 42° (1970) 107° (1998) 0.05" 0"
September 50° 84° 40° (2007) 108° (1971) 0.18" 0"
October 46° 76° 34° (1971) 103° (1980) 0.98" 0"
November 40° 64° 25° (1985) 82° (1997) 2.59" 0"
December 36° 56° 19° (1990) 74° (1999) 3.71" 0"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Aug 1 51° 89° 44° (2009) 106° (1980) 0" 0"
Aug 2 51° 89° 47° (2009) 107° (1993) 0" 0"
Aug 3 51° 89° 47° (2009) 103° (1975) 0" 0"
Aug 4 51° 89° 48° (2009) 107° (1998) 0" 0"
Aug 5 51° 89° 47° (2009) 105° (1998) 0" 0"
Aug 6 51° 89° 47° (1975) 106° (1978) 0" 0"
Aug 7 51° 88° 45° (1975) 105° (1981) 0" 0"
Aug 8 51° 88° 46° (2009) 105° (1984) 0.01" 0"
Aug 9 51° 88° 48° (2009) 105° (2002) 0" 0"
Aug 10 51° 88° 48° (1973) 103° (1970) 0" 0"
Aug 11 51° 88° 48° (1989) 107° (1971) 0" 0"
Aug 12 51° 88° 48° (2009) 100° (1996) 0" 0"
Aug 13 51° 88° 47° (1973) 103° (1998) 0.01" 0"
Aug 14 51° 88° 49° (1974) 100° (1995) 0" 0"
Aug 15 51° 88° 44° (2009) 101° (1994) 0" 0"
Aug 16 51° 88° 46° (2009) 101° (1983) 0" 0"
Aug 17 51° 88° 47° (1974) 99° (1984) 0" 0"
Aug 18 51° 88° 45° (2009) 99° (1984) 0" 0"
Aug 19 51° 88° 47° (2010) 96° (1986) 0.01" 0"
Aug 20 51° 88° 47° (1985) 100° (1995) 0" 0"
Aug 21 51° 88° 47° (1987) 98° (1974) 0" 0"
Aug 22 51° 88° 46° (1973) 100° (1974) 0" 0"
Aug 23 51° 88° 42° (1970) 100° (1974) 0" 0"
Aug 24 51° 88° 47° (2009) 99° (1988) 0.01" 0"
Aug 25 51° 87° 48° (2002) 107° (1988) 0" 0"
Aug 26 51° 87° 48° (1970) 104° (1988) 0" 0"
Aug 27 51° 87° 47° (1970) 102° (1981) 0" 0"
Aug 28 51° 87° 43° (1970) 104° (2008) 0" 0"
Aug 29 51° 87° 44° (2010) 104° (2008) 0.01" 0"
Aug 30 51° 87° 46° (2010) 104° (2009) 0" 0"
Aug 31 51° 87° 48° (2010) 99° (1976) 0" 0"
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