Eufaula, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.2 °C (low) to 22.5 °C (high). Annual precipitation averages 1158.7 Millimeters. Eufaula 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 | 10.1 °C | 62.23 mm |
| February | 0 °C | 12.4 °C | 62.48 mm |
| March | 4.8 °C | 17.4 °C | 92.2 mm |
| April | 9.4 °C | 22.3 °C | 109.47 mm |
| May | 15.1 °C | 26.3 °C | 149.61 mm |
| June | 20 °C | 31.1 °C | 126.75 mm |
| July | 22.1 °C | 34 °C | 92.71 mm |
| August | 21.3 °C | 33.9 °C | 84.07 mm |
| September | 16.9 °C | 29.9 °C | 113.28 mm |
| October | 10.4 °C | 23.7 °C | 108.46 mm |
| November | 4.6 °C | 17.3 °C | 85.85 mm |
| December | -0.4 °C | 11.3 °C | 71.63 mm |
| Annual | 10.2 °C | 22.5 °C | 1158.74 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |