Duncan Weather Forecast
- 75
- 99
Hot
- 78
- 99
Hot
- 77
- 100
Hot
- 77
- 102
Hot
- 77
- 104
Hot
- 78
- 104
Hot
Today 23 Jul Stephens
Sunny. Highs in the upper 90s. Southeast Winds 5 to 10 Mph.
Tonight 23 Jul Stephens
Clear. Lows in the mid 70s. Southeast Winds 10 to 15 Mph.
Duncan Temperature Statistics
July Temperature
Duncan, Halliburton Field Airport (1.9 miles)
Lowest 6 July, 2026
68 °FAverage July
83.4 °FHighest 21 July, 2026
104 °F
Climate (2021–2026)
Duncan, Halliburton Field Airport (1.9 miles)
Average Low 2021–2026
52.7 °FAverage 2021–2026
64 °FAverage High 2021–2026
76 °F