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
May 1 42° 61° 32° (1972) 86° (1998) 0.12" 0"
May 2 42° 62° 31° (2006) 88° (1998) 0.12" 0"
May 3 42° 62° 32° (2006) 81° (1966) 0.12" 0"
May 4 42° 62° 32° (1978) 85° (1966) 0.12" 0"
May 5 42° 62° 30° (2010) 89° (1966) 0.12" 0"
May 6 43° 63° 34° (1982) 92° (1966) 0.12" 0"
May 7 43° 63° 34° (2000) 87° (1987) 0.13" 0"
May 8 43° 63° 33° (1999) 91° (1987) 0.12" 0"
May 9 43° 64° 32° (1996) 90° (1987) 0.12" 0"
May 10 44° 64° 32° (1999) 85° (1987) 0.11" 0"
May 11 44° 64° 34° (1999) 84° (1993) 0.12" 0"
May 12 44° 64° 34° (1985) 87° (1971) 0.11" 0"
May 13 44° 64° 35° (1970) 93° (1993) 0.11" 0"
May 14 44° 65° 33° (1964) 89° (1973) 0.1" 0"
May 15 45° 65° 34° (1964) 92° (1973) 0.11" 0"
May 16 45° 65° 34° (2003) 84° (2007) 0.11" 0"
May 17 45° 65° 34° (1965) 90° (2006) 0.1" 0"
May 18 45° 66° 36° (2003) 92° (2008) 0.11" 0"
May 19 46° 66° 36° (2003) 90° (1993) 0.1" 0"
May 20 46° 66° 39° (1989) 90° (1963) 0.1" 0"
May 21 46° 66° 38° (1975) 91° (1963) 0.1" 0"
May 22 46° 66° 34° (1964) 93° (1963) 0.1" 0"
May 23 46° 67° 37° (1964) 93° (2001) 0.1" 0"
May 24 47° 67° 37° (1975) 92° (1969) 0.11" 0"
May 25 47° 67° 38° (1964) 90° (1992) 0.11" 0"
May 26 47° 67° 38° (1964) 85° (1966) 0.11" 0"
May 27 47° 67° 36° (1973) 90° (2005) 0.1" 0"
May 28 47° 67° 37° (1973) 95° (2005) 0.11" 0"
May 29 48° 67° 40° (1966) 93° (1983) 0.11" 0"
May 30 48° 68° 38° (1976) 101° (1983) 0.12" 0"
May 31 48° 68° 38° (1976) 91° (1986) 0.11" 0"
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