Drummond, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.3 °C (low) to 22 °C (high). Annual precipitation averages 821.2 Millimeters. Drummond is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.3 °C | 8.8 °C | 23.62 mm |
| February | -2.6 °C | 11.1 °C | 33.02 mm |
| March | 2.2 °C | 16.5 °C | 58.93 mm |
| April | 6.9 °C | 21.4 °C | 82.8 mm |
| May | 13.2 °C | 26.6 °C | 111.25 mm |
| June | 18.8 °C | 32.2 °C | 113.28 mm |
| July | 21.3 °C | 35.2 °C | 84.84 mm |
| August | 20.4 °C | 34.3 °C | 95.76 mm |
| September | 16 °C | 30 °C | 64.26 mm |
| October | 8.9 °C | 23 °C | 76.96 mm |
| November | 2.2 °C | 15.7 °C | 41.15 mm |
| December | -3 °C | 9.5 °C | 35.31 mm |
| Annual | 8.3 °C | 22 °C | 821.18 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |