Rochester, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 33° 47° -1° (1980) 61° (1976) 8.38" 3.7"
February 34° 51° 3° (1989) 75° (1986) 7.11" 0.8"
March 35° 56° 13° (1955) 77° (1969) 5.96" 0.9"
April 38° 61° 20° (1975) 86° (1987) 3.98" 0"
May 43° 67° 22° (1954) 98° (1983) 2.75" 0"
June 47° 71° 33° (1976) 100° (1982) 2.09" 0"
July 51° 77° 35° (1955) 102° (1956) 0.86" 0"
August 51° 78° 33° (1973) 105° (1981) 1.18" 0"
September 46° 73° 23° (1970) 100° (1988) 2.42" 0"
October 41° 62° 16° (1971) 90° (1987) 4.6" 0"
November 37° 52° 2° (1985) 72° (1975) 8.99" 0.1"
December 34° 46° -6° (1972) 63° (1958) 9.03" 2"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 40° 64° 22° (1954) 83° (1976) 0.11" NA
May 2 40° 64° 31° (1969) 80° (1976) 0.1" NA
May 3 40° 64° 30° (1968) 82° (1992) 0.1" NA
May 4 41° 65° 28° (1952) 85° (1992) 0.1" NA
May 5 41° 65° 29° (1952) 86° (1953) 0.1" NA
May 6 41° 65° 29° (1955) 86° (1987) 0.1" NA
May 7 41° 65° 28° (1970) 97° (1956) 0.1" NA
May 8 41° 65° 28° (1955) 92° (1987) 0.1" NA
May 9 42° 66° 27° (1996) 87° (1969) 0.09" NA
May 10 42° 66° 28° (1971) 84° (1988) 0.09" NA
May 11 42° 66° 29° (1973) 89° (1997) 0.09" NA
May 12 42° 66° 28° (1985) 88° (1997) 0.09" NA
May 13 42° 66° 29° (1977) 85° (1997) 0.09" NA
May 14 42° 67° 27° (1966) 88° (1973) 0.09" NA
May 15 43° 67° 27° (1969) 82° (1956) 0.09" NA
May 16 43° 67° 33° (1963) 89° (1985) 0.09" NA
May 17 43° 67° 29° (1966) 94° (1956) 0.09" NA
May 18 43° 67° 29° (1966) 87° (1956) 0.09" NA
May 19 43° 67° 33° (1975) 88° (1961) 0.08" NA
May 20 43° 67° 33° (1975) 92° (1963) 0.08" NA
May 21 44° 68° 29° (1973) 89° (1988) 0.08" NA
May 22 44° 68° 32° (1955) 86° (1958) 0.08" NA
May 23 44° 68° 30° (1966) 87° (1969) 0.08" NA
May 24 44° 68° 31° (1950) 89° (1992) 0.08" NA
May 25 44° 68° 29° (1975) 85° (1983) 0.08" NA
May 26 44° 68° 30° (1973) 82° (1966) 0.08" NA
May 27 45° 68° 30° (1966) 85° (1983) 0.08" NA
May 28 45° 69° 31° (1979) 98° (1983) 0.08" NA
May 29 45° 69° 32° (1979) 93° (1983) 0.08" NA
May 30 45° 69° 33° (1962) 94° (1956) 0.08" NA
May 31 45° 69° 33° (1953) 90° (1986) 0.08" NA
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