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Duncan, OK Climate
1991 to 2020 normals at Duncan, 1.9 mi from the center of Duncan, elevation 1125 ft.
Average weather by month
Select a month for daily normals and last year's weather
| Month | Range | High | Low | Precip. | Snow |
|---|---|---|---|---|---|
| January | 52° | 28° | 1.52 in | 1.1 in | |
| February | 57° | 32° | 1.84 in | 0.4 in | |
| March | 65° | 41° | 2.76 in | 0.2 in | |
| April | 73° | 49° | 3.45 in | 0.0 in | |
| May | 81° | 59° | 5.58 in | 0.0 in | |
| June | 89° | 68° | 4.49 in | 0.0 in | |
| July | 94° | 72° | 2.58 in | 0.0 in | |
| August | 93° | 71° | 2.90 in | 0.0 in | |
| September | 86° | 63° | 3.79 in | 0.0 in | |
| October | 76° | 51° | 3.86 in | 0.0 in | |
| November | 64° | 39° | 2.33 in | 0.3 in | |
| December | 54° | 31° | 2.04 in | 0.8 in | |
| Year | 73° | 37.14 in | 2.8 in |
Frequently asked questions
- What is the hottest month in Duncan, OK?
- July is the warmest month, with a normal high of 94°F at Duncan.
- What is the coldest month in Duncan, OK?
- January is the coldest month, with a normal low of 28°F.
- What is the wettest month in Duncan, OK?
- May has the most precipitation on average, about 5.58 inches.