La Barge, Wyoming has a Subarctic With Cool Summers And Year Around Rainfall climate (Köppen classification: Dfc). Average annual temperatures range from -5.8 °C (low) to 12.7 °C (high). Annual precipitation averages 209.5 Millimeters. La Barge is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Aug. 11 - Aug. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -19 °C | -2.3 °C | 10.41 mm |
| February | -16.9 °C | -0.5 °C | 10.92 mm |
| March | -9.6 °C | 5.6 °C | 13.97 mm |
| April | -5 °C | 11.8 °C | 21.84 mm |
| May | -0.3 °C | 17.3 °C | 31.5 mm |
| June | 3.5 °C | 23.2 °C | 23.11 mm |
| July | 6.4 °C | 28.4 °C | 15.49 mm |
| August | 5.6 °C | 27.7 °C | 21.84 mm |
| September | 0.6 °C | 22.1 °C | 22.35 mm |
| October | -5.1 °C | 14.6 °C | 20.07 mm |
| November | -11.5 °C | 5.3 °C | 8.38 mm |
| December | -17.7 °C | -1.4 °C | 9.65 mm |
| Annual | -5.8 °C | 12.7 °C | 209.53 mm |
| Average First Frost Date | Aug. 11 - Aug. 20 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3b : -37.2°C to -34.4°C |
| Plant Hardiness Zone - 2012 | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfc - Subarctic With Cool Summers And Year Around Rainfall |