Climate almanac
Duncan
Oklahoma, United States · 34.50°, -97.96°
What is the weather like in Duncan in May?
In May, Duncan is typically 82°F (28°C) during the day and 63°F (17°C) at night. The month brings about 5.2 in (131 mm) of precipitation in total.
- Average high82°F (28°C)
- Average low63°F (17°C)
- Precipitation5.2 in (131 mm)
- Clear or mostly clear days12
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)