Brooksville, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.3 °C (low) to 22.7 °C (high). Annual precipitation averages 978.7 Millimeters. Brooksville is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.9 °C | 10.5 °C | 38.1 mm |
| February | -0.7 °C | 13.1 °C | 46.74 mm |
| March | 4 °C | 17.9 °C | 72.39 mm |
| April | 8.7 °C | 22.9 °C | 99.82 mm |
| May | 14.1 °C | 26.6 °C | 135.13 mm |
| June | 19 °C | 30.8 °C | 117.35 mm |
| July | 21.3 °C | 34 °C | 90.42 mm |
| August | 20.4 °C | 34.1 °C | 86.61 mm |
| September | 15.8 °C | 29.7 °C | 99.06 mm |
| October | 9.4 °C | 23.9 °C | 83.57 mm |
| November | 3.6 °C | 17.3 °C | 55.37 mm |
| December | -1.1 °C | 11.6 °C | 54.1 mm |
| Annual | 9.3 °C | 22.7 °C | 978.66 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |