Hulbert, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.7 °C (low) to 22 °C (high). Annual precipitation averages 1197.9 Millimeters. Hulbert is located in USDA Plant Hardiness Zone 7b. 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 | -2.6 °C | 9.5 °C | 61.47 mm |
| February | -0.6 °C | 12 °C | 62.74 mm |
| March | 4.1 °C | 16.9 °C | 96.27 mm |
| April | 8.9 °C | 21.9 °C | 126.24 mm |
| May | 14.6 °C | 26.1 °C | 157.23 mm |
| June | 19.6 °C | 30.7 °C | 127.76 mm |
| July | 21.9 °C | 33.6 °C | 95 mm |
| August | 21 °C | 33.5 °C | 85.34 mm |
| September | 16.6 °C | 29.3 °C | 109.73 mm |
| October | 10.1 °C | 23.1 °C | 105.16 mm |
| November | 4 °C | 16.7 °C | 94.49 mm |
| December | -0.8 °C | 10.7 °C | 76.45 mm |
| Annual | 9.7 °C | 22 °C | 1197.88 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 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |