Wilson, Wyoming has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -3.7 °C (low) to 11.7 °C (high). Annual precipitation averages 439.9 Millimeters. Wilson is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -14.2 °C | -2.6 °C | 47.75 mm |
| February | -13 °C | 0.1 °C | 40.64 mm |
| March | -8.4 °C | 5.1 °C | 39.12 mm |
| April | -3.7 °C | 9.9 °C | 33.53 mm |
| May | 0.6 °C | 16.1 °C | 43.18 mm |
| June | 4 °C | 21.6 °C | 33.53 mm |
| July | 6.7 °C | 27.2 °C | 21.59 mm |
| August | 5.7 °C | 26.6 °C | 24.38 mm |
| September | 1.8 °C | 21.3 °C | 34.54 mm |
| October | -2.8 °C | 13 °C | 35.05 mm |
| November | -8.2 °C | 4 °C | 32.26 mm |
| December | -13.4 °C | -2.4 °C | 54.36 mm |
| Annual | -3.7 °C | 11.7 °C | 439.93 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |