Manitou, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.1 °F (low) to 75.6 °F (high). Annual precipitation averages 28.9 Inches. Manitou 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 | 28.2 °F | 53.5 °F | 1.08 in. |
| February | 31.6 °F | 57.3 °F | 1.29 in. |
| March | 39.9 °F | 66.6 °F | 2.14 in. |
| April | 47.6 °F | 75.1 °F | 2.85 in. |
| May | 58.9 °F | 84.0 °F | 4.12 in. |
| June | 68.5 °F | 92.8 °F | 3.61 in. |
| July | 72.1 °F | 97.1 °F | 2.44 in. |
| August | 71.1 °F | 96.5 °F | 2.59 in. |
| September | 63.3 °F | 88.3 °F | 2.85 in. |
| October | 51.1 °F | 77.3 °F | 2.85 in. |
| November | 39.1 °F | 64.4 °F | 1.6 in. |
| December | 29.9 °F | 54.1 °F | 1.43 in. |
| Annual | 50.1 °F | 75.6 °F | 28.85 in. |
| 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 : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |