Duncan, Oklahoma
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 27° 50° -4° (1988) 84° (1950) 1.4" NA
February 32° 56° -2° (1985) 90° (1996) 1.86" NA
March 40° 64° 2° (1948) 95° (1974) 2.79" NA
April 49° 73° 26° (1997) 100° (1972) 3.39" NA
May 58° 80° 34° (1960) 104° (2000) 5.27" NA
June 67° 88° 47° (1964) 111° (1980) 4.52" NA
July 71° 94° 55° (1972) 110° (1980) 2.52" NA
August 70° 93° 55° (1992) 111° (1970) 2.5" NA
September 62° 85° 38° (1984) 108° (2000) 3.99" NA
October 51° 75° 19° (1993) 102° (1977) 3.87" NA
November 39° 62° 14° (1993) 87° (1992) 2.34" NA
December 30° 52° -7° (1989) 88° (1955) 1.96" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 33° 56° 12° (2006) 81° (1950) 0.07" NA
Dec 2 33° 56° 12° (1985) 79° (1951) 0.07" NA
Dec 3 33° 56° 13° (1985) 78° (1995) 0.07" NA
Dec 4 32° 55° 20° (1978) 82° (1954) 0.07" NA
Dec 5 32° 55° 14° (1950) 79° (1956) 0.07" NA
Dec 6 32° 55° 7° (1950) 74° (1966) 0.07" NA
Dec 7 32° 54° 9° (1950) 82° (1966) 0.07" NA
Dec 8 31° 54° 17° (1950) 75° (1952) 0.07" NA
Dec 9 31° 54° 12° (1978) 73° (2003) 0.07" NA
Dec 10 31° 54° 13° (1977) 73° (1996) 0.07" NA
Dec 11 31° 53° 14° (1978) 76° (1996) 0.07" NA
Dec 12 30° 53° 8° (1989) 77° (1973) 0.07" NA
Dec 13 30° 53° 8° (1989) 74° (1948) 0.07" NA
Dec 14 30° 53° 7° (1958) 82° (1948) 0.07" NA
Dec 15 30° 52° 8° (1989) 72° (1948) 0.06" NA
Dec 16 29° 52° 8° (1989) 77° (1948) 0.06" NA
Dec 17 29° 52° 10° (1964) 75° (2006) 0.06" NA
Dec 18 29° 52° 9° (1964) 76° (2002) 0.06" NA
Dec 19 29° 51° 9° (1983) 73° (1962) 0.06" NA
Dec 20 29° 51° 10° (1983) 75° (1978) 0.06" NA
Dec 21 28° 51° 5° (1983) 71° (1949) 0.06" NA
Dec 22 28° 51° -2° (1989) 76° (1969) 0.06" NA
Dec 23 28° 51° -1° (1989) 74° (1979) 0.06" NA
Dec 24 28° 51° -7° (1989) 88° (1955) 0.06" NA
Dec 25 28° 50° 4° (1983) 85° (1955) 0.06" NA
Dec 26 27° 50° 4° (1983) 71° (1954) 0.06" NA
Dec 27 27° 50° 17° (1950) 71° (1971) 0.06" NA
Dec 28 27° 50° 17° (1950) 71° (1976) 0.05" NA
Dec 29 27° 50° 4° (1983) 82° (1951) 0.05" NA
Dec 30 27° 50° 5° (1983) 82° (1951) 0.05" NA
Dec 31 27° 49° 4° (1968) 84° (1951) 0.05" NA
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