Roff, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.7 °C (low) to 22.2 °C (high). Annual precipitation averages 1025.7 Millimeters. Roff 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 | -2.1 °C | 10.4 °C | 49.28 mm |
| February | -0.4 °C | 12.5 °C | 55.37 mm |
| March | 4.6 °C | 17.4 °C | 79.76 mm |
| April | 8.8 °C | 21.8 °C | 94.74 mm |
| May | 14.1 °C | 25.6 °C | 135.64 mm |
| June | 19.2 °C | 30.3 °C | 118.87 mm |
| July | 21.1 °C | 33.4 °C | 86.36 mm |
| August | 20.6 °C | 33.7 °C | 73.91 mm |
| September | 16.4 °C | 29.6 °C | 103.38 mm |
| October | 10.2 °C | 23.2 °C | 99.31 mm |
| November | 4.2 °C | 17.1 °C | 65.53 mm |
| December | -0.8 °C | 11.2 °C | 63.5 mm |
| Annual | 9.7 °C | 22.2 °C | 1025.65 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |