July weather in Duncan, OK
The average temperature in Duncan in July is 82.6°F (71.6°F–93.5°F). Average precipitation: 2.58 inches.
July is a summer month in Duncan, and is warmer than the annual average of 61.9°F. Daily temperatures swing about 21.9°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 14h 6m. For travel, July is hot.
Avg High
93.5°F
Avg Low
71.6°F
Precipitation
2.58 in
Daylight
14h 6m
July records in Duncan
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 105.1°F (1980) | 60.1°F (1951) | 3.22 in (1951) |
| July 2 | 107.1°F (1980) | 61.0°F (1976) | 2.84 in (2021) |
| July 3 | 109.9°F (1980) | 60.1°F (1942) | 1.29 in (1972) |
| July 4 | 109.0°F (1980) | 61.0°F (1940) | 3.18 in (1950) |
| July 5 | 105.1°F (2011) | 57.9°F (2002) | 1.86 in (2002) |
| July 6 | 105.1°F (1996) | 55.0°F (1972) | 2.88 in (1960) |
| July 7 | 107.1°F (1970) | 62.1°F (1972) | 3.78 in (1982) |
| July 8 | 107.1°F (1996) | 55.0°F (1952) | 2.62 in (2015) |
| July 9 | 107.1°F (1964) | 59.0°F (1952) | 2.37 in (1994) |
| July 10 | 106.0°F (1954) | 64.0°F (1952) | 1.92 in (1963) |
| July 11 | 108.0°F (2011) | 60.1°F (1961) | 1.12 in (2021) |
| July 12 | 107.1°F (1954) | 60.1°F (1953) | 1.88 in (2023) |
| July 13 | 109.0°F (1946) | 61.0°F (1953) | 1.48 in (1952) |
| July 14 | 105.1°F (1980) | 62.1°F (1967) | 4.32 in (1989) |
| July 15 | 108.0°F (2011) | 60.1°F (1967) | 0.70 in (1976) |
| July 16 | 108.0°F (2011) | 60.1°F (1967) | 0.87 in (2018) |
| July 17 | 108.0°F (1954) | 57.9°F (1967) | 1.20 in (2023) |
| July 18 | 108.0°F (1954) | 64.9°F (1967) | 0.55 in (2021) |
| July 19 | 108.0°F (2011) | 61.0°F (1953) | 3.60 in (1988) |
| July 20 | 107.1°F (1939) | 59.0°F (1953) | 0.90 in (1937) |
| July 21 | 108.0°F (1939) | 57.0°F (1970) | 1.64 in (1940) |
| July 22 | 107.1°F (1939) | 60.1°F (1970) | 2.75 in (1940) |
| July 23 | 108.0°F (1974) | 57.0°F (1970) | 0.97 in (1948) |
| July 24 | 107.1°F (1964) | 61.0°F (1947) | 2.23 in (1975) |
| July 25 | 109.0°F (1954) | 63.0°F (2004) | 1.46 in (1991) |
| July 26 | 106.0°F (1977) | 63.0°F (2004) | 1.95 in (1963) |
| July 27 | 107.1°F (1964) | 62.1°F (1994) | 2.60 in (1945) |
| July 28 | 109.9°F (1946) | 59.0°F (1994) | 2.45 in (1981) |
| July 29 | 107.1°F (1946) | 61.0°F (2005) | 2.28 in (2004) |
| July 30 | 105.1°F (1970) | 59.0°F (1971) | 2.07 in (2002) |
| July 31 | 105.1°F (1966) | 55.9°F (1971) | 1.57 in (2007) |