Manitou, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.1 °C (low) to 24.2 °C (high). Annual precipitation averages 732.8 Millimeters. 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 | -2.1 °C | 11.9 °C | 27.43 mm |
| February | -0.2 °C | 14.1 °C | 32.77 mm |
| March | 4.4 °C | 19.2 °C | 54.36 mm |
| April | 8.7 °C | 23.9 °C | 72.39 mm |
| May | 14.9 °C | 28.9 °C | 104.65 mm |
| June | 20.3 °C | 33.8 °C | 91.69 mm |
| July | 22.3 °C | 36.2 °C | 61.98 mm |
| August | 21.7 °C | 35.8 °C | 65.79 mm |
| September | 17.4 °C | 31.3 °C | 72.39 mm |
| October | 10.6 °C | 25.2 °C | 72.39 mm |
| November | 3.9 °C | 18 °C | 40.64 mm |
| December | -1.2 °C | 12.3 °C | 36.32 mm |
| Annual | 10.1 °C | 24.2 °C | 732.8 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |