Sumpter, Oregon
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 12° 33° -28° (1996) 59° (1971) 1.86" NA
February 15° 40° -40° (1989) 64° (1970) 1.38" NA
March 23° 48° -9° (1993) 73° (1978) 1.58" NA
April 29° 56° 6° (1975) 85° (1987) 1.26" NA
May 35° 65° 20° (1999) 91° (1986) 1.74" NA
June 41° 73° 22° (1973) 95° (1992) 1.67" NA
July 45° 82° 27° (1979) 98° (1980) 0.85" NA
August 45° 81° 26° (1992) 98° (1990) 0.95" NA
September 38° 72° 20° (1985) 95° (1998) 0.81" NA
October 30° 60° 5° (1971) 85° (1996) 0.93" NA
November 23° 43° -10° (1985) 65° (1988) 1.86" NA
December 15° 33° -28° (1983) 54° (1995) 1.95" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 19° 36° 5° (1985) 49° (1995) 0.07" NA
Dec 2 18° 36° -4° (1984) 49° (1977) 0.07" NA
Dec 3 18° 36° 3° (1992) 50° (1987) 0.07" NA
Dec 4 18° 35° -5° (1994) 48° (1979) 0.07" NA
Dec 5 17° 35° -10° (1994) 51° (1975) 0.07" NA
Dec 6 17° 35° -8° (1992) 48° (1979) 0.07" NA
Dec 7 17° 35° -3° (1971) 45° (1979) 0.07" NA
Dec 8 16° 35° -15° (1972) 45° (1973) 0.07" NA
Dec 9 16° 34° -19° (1972) 49° (1981) 0.07" NA
Dec 10 16° 34° -18° (1972) 48° (1981) 0.06" NA
Dec 11 16° 34° -15° (1972) 46° (1995) 0.06" NA
Dec 12 15° 34° -11° (1972) 47° (1995) 0.06" NA
Dec 13 15° 34° -15° (1972) 54° (1995) 0.06" NA
Dec 14 15° 33° -10° (1972) 44° (1977) 0.06" NA
Dec 15 15° 33° -9° (1972) 47° (1969) 0.06" NA
Dec 16 14° 33° -5° (1985) 50° (1969) 0.06" NA
Dec 17 14° 33° -10° (1984) 49° (1969) 0.06" NA
Dec 18 14° 33° -1° (1970) 42° (1999) 0.06" NA
Dec 19 14° 33° -15° (1978) 41° (1972) 0.06" NA
Dec 20 14° 33° -20° (1984) 39° (1972) 0.06" NA
Dec 21 14° 33° -25° (1990) 44° (1972) 0.06" NA
Dec 22 13° 33° -25° (1990) 47° (1973) 0.06" NA
Dec 23 13° 32° -28° (1983) 43° (1971) 0.06" NA
Dec 24 13° 32° -21° (1983) 44° (1978) 0.06" NA
Dec 25 13° 32° -3° (1970) 46° (1980) 0.06" NA
Dec 26 13° 32° -7° (1988) 48° (1980) 0.06" NA
Dec 27 13° 32° -11° (1988) 44° (1980) 0.06" NA
Dec 28 13° 32° -10° (1988) 42° (1996) 0.06" NA
Dec 29 12° 32° -25° (1978) 48° (1996) 0.06" NA
Dec 30 12° 32° -26° (1990) 48° (1996) 0.06" NA
Dec 31 12° 32° -19° (1990) 40° (1970) 0.06" NA
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