Riley, Oregon
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 14° 36° -30° (1962) 58° (1971) 0.72" 9.4"
February 20° 42° -32° (1989) 62° (1986) 0.64" 4.5"
March 26° 50° -3° (1979) 76° (1966) 0.91" 4.3"
April 30° 58° 3° (1975) 83° (1977) 0.7" 1.7"
May 35° 66° 12° (1964) 92° (1986) 1.15" 0.7"
June 41° 75° 22° (1976) 95° (1990) 0.59" 0.1"
July 45° 84° 26° (1986) 97° (1980) 0.38" 0"
August 44° 84° 23° (1965) 105° (1967) 0.53" 0"
September 36° 75° 11° (1970) 95° (1988) 0.57" 0"
October 29° 63° 5° (1985) 88° (1988) 0.64" 0.9"
November 22° 45° -16° (1985) 69° (1976) 1.23" 6.2"
December 15° 36° -31° (1972) 60° (1972) 0.88" 11.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 33° 62° 15° (1982) 78° (1985) 0.03" NA
May 2 33° 62° 15° (1964) 82° (1966) 0.03" NA
May 3 33° 63° 12° (1964) 85° (1966) 0.03" NA
May 4 33° 63° 20° (1962) 85° (1966) 0.03" NA
May 5 33° 63° 14° (1985) 81° (1966) 0.03" NA
May 6 34° 63° 18° (1968) 82° (1987) 0.04" NA
May 7 34° 64° 16° (1982) 83° (1987) 0.04" NA
May 8 34° 64° 18° (1990) 84° (1987) 0.04" NA
May 9 34° 64° 22° (1972) 86° (1987) 0.04" NA
May 10 34° 64° 21° (1979) 80° (1969) 0.04" NA
May 11 35° 65° 18° (1970) 80° (1988) 0.04" NA
May 12 35° 65° 21° (1985) 83° (1988) 0.04" NA
May 13 35° 65° 20° (1974) 88° (1976) 0.04" NA
May 14 35° 65° 18° (1970) 86° (1973) 0.04" NA
May 15 35° 66° 20° (1976) 86° (1973) 0.04" NA
May 16 36° 66° 18° (1982) 87° (1973) 0.04" NA
May 17 36° 66° 18° (1965) 86° (1973) 0.04" NA
May 18 36° 67° 23° (1971) 86° (1973) 0.04" NA
May 19 36° 67° 18° (1982) 80° (1980) 0.04" NA
May 20 36° 67° 18° (1976) 84° (1980) 0.04" NA
May 21 36° 67° 24° (1973) 83° (1988) 0.04" NA
May 22 37° 68° 23° (1986) 83° (1967) 0.04" NA
May 23 37° 68° 15° (1964) 82° (1969) 0.04" NA
May 24 37° 68° 25° (1972) 83° (1983) 0.04" NA
May 25 37° 68° 15° (1975) 88° (1966) 0.04" NA
May 26 37° 69° 21° (1964) 87° (1966) 0.04" NA
May 27 37° 69° 29° (1968) 87° (1983) 0.04" NA
May 28 38° 69° 21° (1982) 89° (1983) 0.03" NA
May 29 38° 69° 20° (1982) 90° (1986) 0.03" NA
May 30 38° 70° 26° (1970) 92° (1986) 0.03" NA
May 31 38° 70° 23° (1984) 90° (1986) 0.03" NA
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