Rocky, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9 °C (low) to 22.8 °C (high). Annual precipitation averages 758 Millimeters. Rocky 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 | -3.2 °C | 10.3 °C | 26.16 mm |
| February | -1.5 °C | 12.4 °C | 29.97 mm |
| March | 3.1 °C | 17.4 °C | 54.36 mm |
| April | 7.7 °C | 22.2 °C | 75.69 mm |
| May | 13.8 °C | 27.3 °C | 110.24 mm |
| June | 19.2 °C | 32.5 °C | 97.03 mm |
| July | 21.5 °C | 35.3 °C | 61.98 mm |
| August | 20.7 °C | 34.9 °C | 85.09 mm |
| September | 16.5 °C | 30.2 °C | 69.6 mm |
| October | 9.5 °C | 23.7 °C | 73.15 mm |
| November | 2.9 °C | 16.6 °C | 40.39 mm |
| December | -2.1 °C | 10.7 °C | 34.29 mm |
| Annual | 9 °C | 22.8 °C | 757.95 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 | Exceptional Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |