Fitzhugh, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.9 °C (low) to 22.3 °C (high). Annual precipitation averages 1040.7 Millimeters. Fitzhugh is located in USDA Plant Hardiness Zone 7b. 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 | -1.9 °C | 10.4 °C | 49.53 mm |
| February | -0.3 °C | 12.6 °C | 57.4 mm |
| March | 4.6 °C | 17.5 °C | 81.03 mm |
| April | 8.9 °C | 22.1 °C | 97.54 mm |
| May | 14.4 °C | 25.9 °C | 135.89 mm |
| June | 19.4 °C | 30.6 °C | 120.14 mm |
| July | 21.6 °C | 33.7 °C | 88.14 mm |
| August | 20.9 °C | 33.8 °C | 74.68 mm |
| September | 16.7 °C | 29.7 °C | 102.87 mm |
| October | 10.3 °C | 23.4 °C | 99.82 mm |
| November | 4.3 °C | 17.1 °C | 69.09 mm |
| December | -0.7 °C | 11.3 °C | 64.52 mm |
| Annual | 9.9 °C | 22.3 °C | 1040.65 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |