Index, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 31° 40° 3° (1982) 62° (2005) 16.05" 20.5"
February 32° 46° 6° (1989) 73° (1992) 11.92" 11"
March 34° 52° 16° (1989) 80° (1994) 10.24" 3.8"
April 38° 59° 27° (1975) 91° (1998) 7.83" 1"
May 43° 65° 30° (1972) 100° (1983) 5.58" 0"
June 48° 69° 31° (1976) 98° (1970) 4.04" 0"
July 51° 75° 37° (1971) 100° (2006) 2.41" 0"
August 52° 75° 38° (1973) 98° (1981) 2.45" 0"
September 47° 70° 30° (1972) 98° (1988) 4.77" 0"
October 41° 59° 23° (2002) 86° (1980) 9.97" 0"
November 35° 46° 8° (1985) 70° (1970) 18.03" 6"
December 31° 40° 1° (1990) 60° (2002) 16.63" 15.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Nov 1 38° 52° 26° (1995) 70° (1970) 0.5" NA
Nov 2 38° 52° 26° (1995) 70° (1970) 0.51" NA
Nov 3 37° 51° 24° (1973) 70° (1970) 0.52" NA
Nov 4 37° 51° 22° (2003) 64° (1980) 0.54" NA
Nov 5 37° 50° 22° (2003) 67° (1987) 0.55" NA
Nov 6 37° 50° 28° (1971) 62° (1976) 0.56" NA
Nov 7 37° 49° 25° (2003) 60° (1979) 0.57" NA
Nov 8 36° 49° 28° (1982) 60° (1981) 0.58" NA
Nov 9 36° 48° 26° (1982) 65° (1976) 0.59" NA
Nov 10 36° 48° 24° (1978) 65° (1976) 0.6" NA
Nov 11 36° 48° 19° (1978) 62° (1976) 0.6" NA
Nov 12 36° 47° 19° (1978) 61° (1976) 0.61" NA
Nov 13 35° 47° 19° (1978) 59° (1979) 0.62" NA
Nov 14 35° 47° 22° (1978) 63° (1979) 0.62" NA
Nov 15 35° 46° 24° (2000) 60° (1979) 0.63" NA
Nov 16 35° 46° 22° (2000) 58° (1997) 0.63" NA
Nov 17 35° 45° 27° (1972) 58° (1995) 0.63" NA
Nov 18 35° 45° 22° (1973) 58° (1995) 0.63" NA
Nov 19 34° 45° 19° (1977) 58° (2003) 0.64" NA
Nov 20 34° 45° 17° (1977) 57° (1987) 0.64" NA
Nov 21 34° 44° 16° (1977) 62° (2002) 0.64" NA
Nov 22 34° 44° 11° (1985) 61° (2002) 0.64" NA
Nov 23 34° 44° 8° (1985) 56° (2002) 0.64" NA
Nov 24 34° 43° 14° (1985) 53° (1990) 0.63" NA
Nov 25 33° 43° 18° (1985) 56° (1977) 0.63" NA
Nov 26 33° 43° 18° (1985) 50° (1977) 0.63" NA
Nov 27 33° 43° 16° (1985) 49° (1980) 0.62" NA
Nov 28 33° 43° 18° (1985) 57° (1995) 0.62" NA
Nov 29 33° 42° 16° (1975) 57° (1995) 0.61" NA
Nov 30 33° 42° 19° (1985) 58° (2002) 0.6" NA
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