Marshall, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.3 °F (low) to 71.8 °F (high). Annual precipitation averages 34.1 Inches. Marshall is located in USDA Plant Hardiness Zone 7a. 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 | 24.5 °F | 48.6 °F | 1.08 in. |
| February | 27.6 °F | 52.2 °F | 1.49 in. |
| March | 36.3 °F | 62.1 °F | 2.43 in. |
| April | 45.1 °F | 70.8 °F | 3.6 in. |
| May | 56.2 °F | 79.5 °F | 4.76 in. |
| June | 66.2 °F | 89.0 °F | 4.84 in. |
| July | 70.6 °F | 94.7 °F | 3.19 in. |
| August | 69.0 °F | 93.8 °F | 3.46 in. |
| September | 61.0 °F | 86.1 °F | 2.94 in. |
| October | 48.2 °F | 73.7 °F | 3.04 in. |
| November | 36.3 °F | 61.1 °F | 1.8 in. |
| December | 26.8 °F | 49.7 °F | 1.47 in. |
| Annual | 47.3 °F | 71.8 °F | 34.1 in. |
| 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 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |