Lawton, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10 °C (low) to 23.6 °C (high). Annual precipitation averages 782.6 Millimeters. Lawton 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 | -2.3 °C | 11.6 °C | 29.97 mm |
| February | -0.3 °C | 13.7 °C | 39.12 mm |
| March | 4.5 °C | 18.7 °C | 58.93 mm |
| April | 9 °C | 23.2 °C | 74.93 mm |
| May | 14.9 °C | 27.8 °C | 112.01 mm |
| June | 19.9 °C | 32.6 °C | 96.52 mm |
| July | 22.1 °C | 35.6 °C | 61.47 mm |
| August | 21.6 °C | 35.3 °C | 69.09 mm |
| September | 17.1 °C | 30.7 °C | 72.64 mm |
| October | 10.3 °C | 24.6 °C | 79.5 mm |
| November | 3.9 °C | 17.7 °C | 42.67 mm |
| December | -1.3 °C | 12.1 °C | 45.72 mm |
| Annual | 10 °C | 23.6 °C | 782.57 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 |