Mannsville, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.7 °C (low) to 23.3 °C (high). Annual precipitation averages 1031 Millimeters. Mannsville is located in USDA Plant Hardiness Zone 8a. 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 | -1.2 °C | 11.4 °C | 52.58 mm |
| February | 0.8 °C | 13.9 °C | 57.91 mm |
| March | 5.4 °C | 18.4 °C | 83.06 mm |
| April | 9.8 °C | 23.1 °C | 92.96 mm |
| May | 15.4 °C | 26.8 °C | 145.29 mm |
| June | 20.3 °C | 31.6 °C | 116.08 mm |
| July | 22.5 °C | 34.4 °C | 70.61 mm |
| August | 21.8 °C | 34.6 °C | 67.56 mm |
| September | 17.4 °C | 30.4 °C | 101.35 mm |
| October | 10.8 °C | 24.5 °C | 105.66 mm |
| November | 5 °C | 18.1 °C | 67.06 mm |
| December | 0 °C | 12.4 °C | 70.87 mm |
| Annual | 10.7 °C | 23.3 °C | 1030.99 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 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |