Fargo, Oklahoma has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 7.1 °C (low) to 21.9 °C (high). Annual precipitation averages 614.9 Millimeters. Fargo is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.3 °C | 9.4 °C | 20.32 mm |
| February | -3.9 °C | 11.2 °C | 22.61 mm |
| March | 1.1 °C | 16.8 °C | 44.45 mm |
| April | 6 °C | 21.6 °C | 52.83 mm |
| May | 12.1 °C | 26.4 °C | 80.01 mm |
| June | 17.9 °C | 31.4 °C | 89.15 mm |
| July | 20.3 °C | 34.4 °C | 64.26 mm |
| August | 19.3 °C | 33.8 °C | 72.14 mm |
| September | 14.7 °C | 29.4 °C | 45.97 mm |
| October | 7.4 °C | 22.8 °C | 65.53 mm |
| November | 0.5 °C | 15.8 °C | 30.23 mm |
| December | -4.4 °C | 9.7 °C | 27.43 mm |
| Annual | 7.1 °C | 21.9 °C | 614.93 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |