Diablo, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 33° 40° 2° (1979) 63° (1974) 11.77" 11.1"
February 33° 44° 2° (1989) 61° (1968) 7.26" 6.5"
March 35° 50° 16° (1989) 75° (2004) 6.89" 1.7"
April 39° 58° 25° (1982) 89° (1977) 4.77" 0.1"
May 45° 65° 31° (2006) 101° (1983) 3.45" 0"
June 50° 70° 35° (1976) 100° (2008) 2.72" 0"
July 53° 77° 41° (1986) 107° (1965) 1.7" 0"
August 54° 77° 40° (1980) 108° (1965) 1.77" 0"
September 50° 70° 33° (1972) 98° (1988) 3.18" 0"
October 43° 57° 20° (1984) 80° (1975) 8.32" 0"
November 36° 45° 7° (1985) 74° (1969) 14.04" 2.5"
December 32° 39° -4° (1968) 58° (1980) 10.95" 4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 52° 74° 43° (1973) 96° (1987) 0.08" 0"
Sep 2 52° 74° 44° (1960) 91° (1988) 0.09" 0"
Sep 3 52° 74° 44° (1960) 94° (1988) 0.09" 0"
Sep 4 52° 74° 42° (2002) 98° (1988) 0.09" 0"
Sep 5 51° 73° 41° (2005) 92° (1973) 0.09" 0"
Sep 6 51° 73° 44° (1969) 97° (1973) 0.09" 0"
Sep 7 51° 73° 42° (1984) 90° (1987) 0.08" 0"
Sep 8 51° 73° 40° (1983) 87° (1974) 0.1" 0"
Sep 9 51° 72° 42° (1983) 89° (1997) 0.08" 0"
Sep 10 51° 72° 44° (1977) 92° (1963) 0.09" 0"
Sep 11 50° 72° 43° (1964) 88° (2007) 0.09" 0"
Sep 12 50° 71° 41° (1964) 86° (1960) 0.1" 0"
Sep 13 50° 71° 41° (1964) 87° (1975) 0.09" 0"
Sep 14 50° 71° 42° (1991) 88° (1988) 0.1" 0"
Sep 15 50° 71° 39° (1969) 87° (1995) 0.1" 0"
Sep 16 50° 70° 39° (1969) 90° (1967) 0.1" 0"
Sep 17 49° 70° 37° (1983) 90° (1967) 0.1" 0"
Sep 18 49° 70° 38° (1988) 82° (1973) 0.1" 0"
Sep 19 49° 69° 40° (1989) 85° (1999) 0.11" 0"
Sep 20 49° 69° 39° (1968) 85° (1974) 0.11" 0"
Sep 21 49° 68° 38° (1968) 89° (1974) 0.12" 0"
Sep 22 48° 68° 40° (2005) 90° (1974) 0.11" 0"
Sep 23 48° 68° 38° (1982) 92° (1974) 0.12" 0"
Sep 24 48° 67° 35° (1970) 97° (1974) 0.12" 0"
Sep 25 48° 67° 35° (1970) 87° (1974) 0.12" 0"
Sep 26 48° 66° 36° (1972) 83° (1974) 0.13" 0"
Sep 27 47° 66° 36° (1972) 84° (1967) 0.13" 0"
Sep 28 47° 66° 33° (1972) 88° (2003) 0.14" 0"
Sep 29 47° 65° 37° (1972) 87° (2003) 0.15" 0"
Sep 30 47° 65° 39° (1972) 85° (2003) 0.16" 0"
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