West Fargo, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.2 °C (low) to 11 °C (high). Annual precipitation averages 615.9 Millimeters. West Fargo is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -18.1 °C | -8.4 °C | 18.29 mm |
| February | -15.8 °C | -5.4 °C | 16 mm |
| March | -8.3 °C | 1.7 °C | 26.67 mm |
| April | -0.2 °C | 11.8 °C | 32.51 mm |
| May | 7.1 °C | 19.8 °C | 76.45 mm |
| June | 13.4 °C | 24.9 °C | 113.54 mm |
| July | 15.4 °C | 27.2 °C | 90.17 mm |
| August | 13.8 °C | 26.7 °C | 68.83 mm |
| September | 8.8 °C | 22 °C | 71.63 mm |
| October | 1.8 °C | 13.3 °C | 59.94 mm |
| November | -6.2 °C | 3.3 °C | 21.59 mm |
| December | -13.5 °C | -4.8 °C | 20.32 mm |
| Annual | -0.2 °C | 11 °C | 615.94 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |