Castle Rock, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 35° 47° 1° (1950) 65° (1931) 6.62" 2.4"
February 35° 51° 2° (1950) 73° (1968) 5.07" 1"
March 38° 56° 19° (1955) 81° (1947) 4.68" 0"
April 41° 61° 24° (1936) 90° (2004) 3.79" 0"
May 45° 67° 28° (1937) 99° (2001) 3.18" 0"
June 50° 72° 31° (1932) 100° (1955) 2.26" 0"
July 53° 78° 33° (1932) 105° (1942) 0.83" 0"
August 53° 79° 35° (1935) 108° (1981) 1.15" 0"
September 50° 74° 29° (1934) 104° (1944) 2.05" 0"
October 44° 63° 24° (2002) 90° (1987) 4.01" 0"
November 39° 52° 8° (1955) 77° (1951) 7.71" 0.3"
December 35° 46° 4° (1972) 66° (1934) 6.8" 1.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jun 1 48° 70° 32° (1939) 96° (2001) 0.1" NA
Jun 2 48° 70° 34° (1935) 95° (1970) 0.09" NA
Jun 3 48° 70° 36° (1935) 95° (1970) 0.1" NA
Jun 4 48° 70° 36° (1940) 89° (1950) 0.09" NA
Jun 5 48° 70° 34° (1940) 91° (1935) 0.09" NA
Jun 6 48° 70° 36° (1932) 96° (1935) 0.08" NA
Jun 7 49° 70° 38° (1960) 99° (2003) 0.09" NA
Jun 8 49° 71° 36° (1940) 91° (1948) 0.09" NA
Jun 9 49° 71° 32° (1938) 92° (1944) 0.09" NA
Jun 10 49° 71° 32° (1933) 100° (1955) 0.09" NA
Jun 11 49° 71° 37° (1943) 96° (1940) 0.08" NA
Jun 12 49° 71° 34° (1945) 88° (1932) 0.09" NA
Jun 13 49° 71° 39° (1945) 88° (1986) 0.08" NA
Jun 14 49° 71° 33° (1945) 94° (1986) 0.08" NA
Jun 15 50° 72° 34° (1945) 89° (1988) 0.08" NA
Jun 16 50° 72° 35° (1934) 90° (1963) 0.07" NA
Jun 17 50° 72° 32° (1932) 91° (1969) 0.08" NA
Jun 18 50° 72° 38° (1933) 95° (1958) 0.07" NA
Jun 19 50° 72° 34° (1934) 99° (1982) 0.07" NA
Jun 20 50° 72° 37° (1933) 88° (1945) 0.07" NA
Jun 21 50° 73° 36° (1945) 90° (1970) 0.07" NA
Jun 22 50° 73° 38° (1940) 92° (1992) 0.07" NA
Jun 23 51° 73° 31° (1932) 96° (1992) 0.06" NA
Jun 24 51° 73° 35° (1934) 95° (1940) 0.06" NA
Jun 25 51° 73° 35° (1939) 93° (2006) 0.05" NA
Jun 26 51° 74° 39° (1976) 97° (2006) 0.06" NA
Jun 27 51° 74° 38° (1940) 97° (2006) 0.05" NA
Jun 28 51° 74° 40° (1931) 99° (2000) 0.06" NA
Jun 29 51° 74° 35° (1945) 95° (1951) 0.05" NA
Jun 30 52° 75° 37° (1949) 100° (1951) 0.05" NA
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