Richland, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 26° 40° -21° (1950) 71° (1971) 0.97" 2"
February 29° 47° -22° (1950) 73° (1986) 0.75" 1.9"
March 35° 57° 11° (1993) 82° (1960) 0.71" 0.3"
April 40° 65° 23° (1972) 92° (1977) 0.57" 0"
May 47° 73° 30° (1954) 104° (1986) 0.61" 0"
June 54° 80° 38° (1984) 110° (1958) 0.41" 0"
July 58° 88° 41° (1948) 110° (1968) 0.25" 0"
August 58° 88° 39° (1973) 113° (1961) 0.3" 0"
September 50° 79° 31° (1984) 106° (1950) 0.34" 0"
October 40° 65° 13° (2002) 89° (1958) 0.53" 0"
November 33° 49° -6° (1985) 77° (1975) 1.07" 1"
December 27° 40° -10° (1968) 66° (1993) 1.04" 3.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 44° 72° 30° (1950) 87° (1970) 0.01" NA
Oct 2 44° 72° 30° (1954) 86° (1991) 0.01" NA
Oct 3 44° 72° 34° (1999) 89° (1958) 0.01" NA
Oct 4 43° 71° 33° (1973) 88° (1952) 0.01" NA
Oct 5 43° 71° 33° (1973) 88° (1980) 0.01" NA
Oct 6 43° 70° 32° (1974) 87° (1958) 0.01" NA
Oct 7 42° 70° 30° (1970) 86° (1952) 0.01" NA
Oct 8 42° 69° 28° (1985) 86° (1980) 0.01" NA
Oct 9 42° 69° 28° (1985) 84° (1965) 0.01" NA
Oct 10 41° 68° 33° (2006) 84° (1952) 0.01" NA
Oct 11 41° 68° 33° (1987) 82° (1976) 0.01" NA
Oct 12 41° 68° 29° (2002) 85° (1952) 0.01" NA
Oct 13 41° 67° 29° (1970) 88° (1976) 0.02" NA
Oct 14 40° 67° 23° (1969) 82° (1961) 0.02" NA
Oct 15 40° 66° 24° (1969) 81° (1959) 0.02" NA
Oct 16 40° 66° 27° (1970) 80° (1961) 0.02" NA
Oct 17 39° 65° 25° (1949) 78° (1963) 0.02" NA
Oct 18 39° 65° 22° (1969) 78° (1963) 0.02" NA
Oct 19 39° 64° 22° (1949) 77° (1973) 0.02" NA
Oct 20 39° 63° 22° (1949) 78° (1973) 0.02" NA
Oct 21 38° 63° 23° (1949) 76° (2003) 0.02" NA
Oct 22 38° 62° 20° (1984) 79° (1959) 0.02" NA
Oct 23 38° 62° 25° (1984) 77° (1959) 0.02" NA
Oct 24 38° 61° 28° (1958) 75° (1959) 0.02" NA
Oct 25 37° 61° 25° (2002) 78° (1977) 0.02" NA
Oct 26 37° 60° 24° (2002) 80° (1955) 0.02" NA
Oct 27 37° 60° 19° (1970) 72° (1966) 0.02" NA
Oct 28 37° 59° 20° (1948) 76° (2003) 0.02" NA
Oct 29 37° 58° 18° (1971) 75° (2003) 0.03" NA
Oct 30 37° 58° 19° (1971) 74° (1967) 0.03" NA
Oct 31 36° 57° 13° (2002) 75° (1967) 0.03" NA
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