Tri Cities, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 29° 42° -19° (1950) 69° (2003) 1.08" 0.6"
February 31° 48° -23° (1950) 74° (1995) 0.81" 0"
March 36° 58° 10° (1955) 82° (1960) 0.73" 0"
April 42° 66° 22° (1952) 91° (1987) 0.56" 0"
May 50° 75° 30° (1986) 104° (1983) 0.64" 0"
June 56° 82° 38° (1975) 107° (1992) 0.51" 0"
July 62° 90° 42° (1971) 109° (2006) 0.22" 0"
August 61° 89° 41° (1965) 110° (1998) 0.18" 0"
September 52° 80° 30° (1983) 100° (1987) 0.3" 0"
October 42° 66° 17° (1971) 89° (1988) 0.6" 0"
November 36° 51° -8° (1985) 79° (1999) 1" 0.1"
December 29° 40° -7° (1983) 69° (2007) 1.13" 0.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jun 1 54° 78° 39° (1951) 104° (1986) 0.03" 0"
Jun 2 54° 79° 39° (1954) 103° (1986) 0.02" 0"
Jun 3 54° 79° 40° (1980) 99° (2007) 0.03" 0"
Jun 4 54° 79° 42° (1991) 100° (1969) 0.02" 0"
Jun 5 54° 79° 42° (1954) 98° (1949) 0.02" 0"
Jun 6 55° 79° 40° (1976) 99° (1949) 0.03" 0"
Jun 7 55° 79° 40° (1976) 100° (1977) 0.02" 0"
Jun 8 55° 80° 44° (1960) 95° (1948) 0.02" 0"
Jun 9 55° 80° 44° (1975) 97° (1955) 0.02" 0"
Jun 10 55° 80° 45° (1970) 95° (1955) 0.02" 0"
Jun 11 55° 80° 43° (1973) 100° (1955) 0.02" 0"
Jun 12 56° 81° 42° (1976) 96° (1955) 0.02" 0"
Jun 13 56° 81° 43° (1952) 100° (1974) 0.02" 0"
Jun 14 56° 81° 42° (1976) 101° (1974) 0.01" 0"
Jun 15 56° 81° 45° (1959) 100° (1961) 0.02" 0"
Jun 16 56° 82° 43° (1964) 106° (1961) 0.02" 0"
Jun 17 56° 82° 43° (1949) 106° (1961) 0.02" 0"
Jun 18 56° 82° 39° (1954) 106° (1961) 0.01" 0"
Jun 19 57° 82° 45° (1955) 102° (1961) 0.02" 0"
Jun 20 57° 83° 46° (1960) 101° (1985) 0.01" 0"
Jun 21 57° 83° 47° (1960) 101° (1982) 0.02" 0"
Jun 22 57° 83° 48° (1960) 106° (1958) 0.01" 0"
Jun 23 57° 84° 48° (1953) 103° (1992) 0.01" 0"
Jun 24 58° 84° 45° (1985) 107° (1992) 0.01" 0"
Jun 25 58° 84° 42° (1976) 104° (1992) 0.01" 0"
Jun 26 58° 84° 41° (1976) 101° (1970) 0.01" 0"
Jun 27 58° 85° 43° (1976) 102° (2002) 0.01" 0"
Jun 28 58° 85° 38° (1975) 103° (2006) 0.01" 0"
Jun 29 59° 86° 45° (1975) 101° (1948) 0.01" 0"
Jun 30 59° 86° 40° (1949) 100° (1974) 0.01" 0"
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