Holdenville, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.7 °C (low) to 22.6 °C (high). Annual precipitation averages 1075.9 Millimeters. Holdenville is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.4 °C | 10.5 °C | 44.7 mm |
| February | -0.3 °C | 12.8 °C | 53.59 mm |
| March | 4.4 °C | 17.7 °C | 79.5 mm |
| April | 9 °C | 22.6 °C | 107.19 mm |
| May | 14.5 °C | 26.4 °C | 138.68 mm |
| June | 19.4 °C | 30.9 °C | 121.67 mm |
| July | 21.4 °C | 33.9 °C | 97.03 mm |
| August | 20.7 °C | 34.1 °C | 88.39 mm |
| September | 16.3 °C | 29.9 °C | 104.9 mm |
| October | 9.9 °C | 23.8 °C | 96.77 mm |
| November | 4.1 °C | 17.3 °C | 74.42 mm |
| December | -0.8 °C | 11.5 °C | 69.09 mm |
| Annual | 9.7 °C | 22.6 °C | 1075.93 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |