West Richland, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 29° 41° -21° (1950) 71° (1971) 1.01" 1.9"
February 30° 48° -22° (1950) 73° (1986) 0.8" 1.9"
March 35° 58° 11° (1993) 82° (1960) 0.69" 0.2"
April 41° 65° 23° (1972) 92° (1977) 0.6" 0"
May 48° 73° 30° (1954) 104° (1986) 0.65" 0"
June 54° 80° 38° (1984) 110° (1958) 0.5" 0"
July 59° 88° 41° (1948) 110° (1968) 0.25" 0"
August 58° 88° 39° (1973) 113° (1961) 0.16" 0"
September 50° 78° 31° (1984) 106° (1950) 0.31" 0"
October 40° 64° 13° (2002) 89° (1958) 0.54" 0"
November 34° 49° -6° (1985) 77° (1975) 1.02" 0.1"
December 28° 38° -10° (1968) 66° (1993) 1.12" 2.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 43° 69° 30° (1954) 91° (1957) 0.02" 0"
May 2 44° 69° 33° (1954) 89° (1998) 0.01" 0"
May 3 44° 70° 35° (2006) 86° (1971) 0.02" 0"
May 4 44° 70° 34° (1962) 90° (1966) 0.02" 0"
May 5 44° 70° 34° (1965) 93° (1966) 0.01" 0"
May 6 45° 71° 35° (1950) 95° (1966) 0.02" 0"
May 7 45° 71° 34° (1984) 95° (1987) 0.02" 0"
May 8 45° 71° 33° (2002) 96° (1987) 0.02" 0"
May 9 46° 72° 33° (1999) 95° (1987) 0.02" 0"
May 10 46° 72° 34° (1999) 97° (1949) 0.02" 0"
May 11 46° 72° 34° (1999) 98° (1949) 0.02" 0"
May 12 46° 72° 39° (1992) 100° (1949) 0.02" 0"
May 13 47° 73° 37° (1983) 100° (1949) 0.01" 0"
May 14 47° 73° 34° (1955) 95° (1949) 0.02" 0"
May 15 47° 73° 39° (1974) 94° (1973) 0.02" 0"
May 16 48° 74° 38° (1983) 96° (2006) 0.02" 0"
May 17 48° 74° 38° (1974) 96° (2006) 0.02" 0"
May 18 48° 74° 37° (1965) 98° (1956) 0.02" 0"
May 19 49° 74° 36° (2003) 98° (1954) 0.02" 0"
May 20 49° 75° 42° (1950) 91° (1956) 0.02" 0"
May 21 49° 75° 39° (1960) 96° (1958) 0.03" 0"
May 22 49° 75° 38° (1960) 98° (1958) 0.02" 0"
May 23 50° 75° 38° (1964) 100° (1958) 0.02" 0"
May 24 50° 76° 39° (1986) 95° (1985) 0.03" 0"
May 25 50° 76° 41° (1964) 96° (1958) 0.02" 0"
May 26 50° 76° 42° (1967) 100° (1958) 0.03" 0"
May 27 51° 76° 40° (1955) 102° (1958) 0.03" 0"
May 28 51° 76° 39° (1976) 94° (1952) 0.02" 0"
May 29 51° 77° 40° (1951) 101° (1983) 0.03" 0"
May 30 51° 77° 40° (1950) 102° (1986) 0.02" 0"
May 31 51° 77° 42° (1950) 104° (1986) 0.03" 0"
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