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
Jun 1 63° 85° 47° (1964) 102° (1998) 0.18" NA
Jun 2 63° 85° 47° (1964) 104° (1998) 0.17" NA
Jun 3 64° 85° 51° (1964) 104° (1998) 0.17" NA
Jun 4 64° 85° 50° (1969) 98° (1998) 0.17" NA
Jun 5 64° 86° 53° (1970) 94° (1953) 0.17" NA
Jun 6 64° 86° 52° (1998) 99° (1948) 0.17" NA
Jun 7 65° 86° 49° (1983) 96° (1964) 0.17" NA
Jun 8 65° 86° 56° (1983) 99° (1980) 0.17" NA
Jun 9 65° 87° 55° (1996) 99° (1958) 0.17" NA
Jun 10 65° 87° 51° (1955) 99° (1953) 0.16" NA
Jun 11 66° 87° 50° (1955) 101° (1958) 0.16" NA
Jun 12 66° 88° 54° (1995) 101° (1953) 0.16" NA
Jun 13 66° 88° 55° (1985) 101° (1953) 0.16" NA
Jun 14 66° 88° 59° (1976) 106° (1953) 0.16" NA
Jun 15 67° 88° 54° (1969) 104° (1953) 0.15" NA
Jun 16 67° 89° 53° (1989) 99° (1953) 0.15" NA
Jun 17 67° 89° 55° (1981) 101° (1971) 0.15" NA
Jun 18 67° 89° 58° (1985) 101° (1953) 0.15" NA
Jun 19 67° 89° 60° (1985) 101° (1948) 0.15" NA
Jun 20 68° 89° 60° (1961) 102° (1953) 0.14" NA
Jun 21 68° 90° 55° (1976) 104° (1953) 0.14" NA
Jun 22 68° 90° 59° (2001) 101° (1953) 0.14" NA
Jun 23 68° 90° 60° (2004) 102° (1960) 0.14" NA
Jun 24 68° 90° 55° (1957) 104° (1984) 0.13" NA
Jun 25 69° 91° 56° (1974) 108° (1972) 0.13" NA
Jun 26 69° 91° 57° (1958) 109° (1972) 0.13" NA
Jun 27 69° 91° 55° (2003) 108° (1972) 0.12" NA
Jun 28 69° 91° 58° (1958) 111° (1980) 0.12" NA
Jun 29 69° 91° 63° (1983) 109° (1980) 0.12" NA
Jun 30 69° 92° 64° (1985) 108° (1980) 0.12" NA
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