Box, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.3 °C (low) to 21.6 °C (high). Annual precipitation averages 1223.8 Millimeters. Box 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 | 9.4 °C | 67.31 mm |
| February | -0.7 °C | 11.7 °C | 63.25 mm |
| March | 3.9 °C | 16.6 °C | 104.9 mm |
| April | 8.4 °C | 21.4 °C | 124.97 mm |
| May | 13.8 °C | 25.4 °C | 151.38 mm |
| June | 18.9 °C | 30 °C | 126.24 mm |
| July | 21.1 °C | 33.3 °C | 88.65 mm |
| August | 20.4 °C | 33.1 °C | 86.36 mm |
| September | 16.2 °C | 28.8 °C | 117.09 mm |
| October | 9.8 °C | 22.5 °C | 124.97 mm |
| November | 3.9 °C | 16.4 °C | 95.25 mm |
| December | -1.1 °C | 10.4 °C | 73.41 mm |
| Annual | 9.3 °C | 21.6 °C | 1223.78 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |