Fittstown, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.9 °C (low) to 22.9 °C (high). Annual precipitation averages 1053.6 Millimeters. Fittstown 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 | -2.1 °C | 11 °C | 50.04 mm |
| February | 0 °C | 13.2 °C | 58.67 mm |
| March | 4.6 °C | 17.9 °C | 82.55 mm |
| April | 9.2 °C | 22.7 °C | 100.33 mm |
| May | 14.7 °C | 26.4 °C | 142.49 mm |
| June | 19.6 °C | 31 °C | 117.86 mm |
| July | 21.7 °C | 34.1 °C | 86.87 mm |
| August | 20.9 °C | 34.3 °C | 73.15 mm |
| September | 16.7 °C | 30.3 °C | 102.11 mm |
| October | 10.2 °C | 24 °C | 102.62 mm |
| November | 4.2 °C | 17.8 °C | 71.12 mm |
| December | -0.8 °C | 11.9 °C | 65.79 mm |
| Annual | 9.9 °C | 22.9 °C | 1053.6 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 |