Bernice, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.6 °C (low) to 21.2 °C (high). Annual precipitation averages 1187.2 Millimeters. Bernice 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 | -3.8 °C | 8.3 °C | 57.66 mm |
| February | -1.9 °C | 10.8 °C | 55.88 mm |
| March | 2.8 °C | 16.1 °C | 93.22 mm |
| April | 7.9 °C | 21.3 °C | 120.65 mm |
| May | 13.6 °C | 25.5 °C | 164.59 mm |
| June | 18.7 °C | 30.2 °C | 125.73 mm |
| July | 20.9 °C | 33 °C | 104.65 mm |
| August | 19.9 °C | 32.9 °C | 91.95 mm |
| September | 15.5 °C | 28.6 °C | 115.32 mm |
| October | 8.8 °C | 22.4 °C | 103.63 mm |
| November | 2.9 °C | 15.8 °C | 85.09 mm |
| December | -1.9 °C | 9.8 °C | 68.83 mm |
| Annual | 8.6 °C | 21.2 °C | 1187.2 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 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |