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
Aug 1 71° 95° 62° (1965) 106° (1970) 0.07" NA
Aug 2 71° 95° 56° (1971) 106° (1970) 0.07" NA
Aug 3 71° 95° 62° (1949) 105° (1964) 0.07" NA
Aug 4 71° 95° 62° (1973) 106° (1964) 0.07" NA
Aug 5 71° 95° 60° (1948) 109° (1964) 0.07" NA
Aug 6 71° 95° 61° (1990) 110° (1964) 0.07" NA
Aug 7 71° 95° 60° (1957) 106° (1951) 0.07" NA
Aug 8 71° 95° 56° (1989) 108° (1970) 0.07" NA
Aug 9 71° 95° 56° (1989) 111° (1970) 0.07" NA
Aug 10 71° 94° 59° (1989) 106° (1964) 0.07" NA
Aug 11 71° 94° 60° (1989) 108° (1953) 0.07" NA
Aug 12 71° 94° 56° (1967) 105° (1948) 0.07" NA
Aug 13 70° 94° 56° (1967) 107° (1969) 0.07" NA
Aug 14 70° 94° 60° (1967) 108° (1956) 0.07" NA
Aug 15 70° 94° 60° (1992) 107° (1956) 0.08" NA
Aug 16 70° 94° 59° (1992) 107° (1952) 0.08" NA
Aug 17 70° 93° 62° (1992) 108° (1956) 0.08" NA
Aug 18 70° 93° 63° (1958) 106° (1952) 0.08" NA
Aug 19 70° 93° 59° (1950) 103° (1969) 0.08" NA
Aug 20 69° 93° 58° (1963) 105° (1948) 0.08" NA
Aug 21 69° 93° 58° (1950) 107° (1948) 0.08" NA
Aug 22 69° 93° 58° (1949) 105° (1952) 0.09" NA
Aug 23 69° 92° 58° (1961) 104° (1948) 0.09" NA
Aug 24 69° 92° 55° (1966) 106° (1963) 0.09" NA
Aug 25 68° 92° 55° (1966) 104° (1952) 0.09" NA
Aug 26 68° 92° 55° (1962) 105° (1963) 0.09" NA
Aug 27 68° 91° 61° (1962) 105° (1963) 0.1" NA
Aug 28 68° 91° 55° (1992) 107° (1963) 0.1" NA
Aug 29 68° 91° 57° (1992) 106° (1984) 0.1" NA
Aug 30 67° 90° 59° (1992) 108° (1956) 0.1" NA
Aug 31 67° 90° 58° (1967) 106° (1952) 0.11" NA
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