La Barge, Wyoming has a Subarctic With Cool Summers And Year Around Rainfall climate (Köppen classification: Dfc). Average annual temperatures range from 21.6 °F (low) to 54.8 °F (high). Annual precipitation averages 8.3 Inches. 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 | -2.2 °F | 27.9 °F | 0.41 in. |
| February | 1.6 °F | 31.1 °F | 0.43 in. |
| March | 14.7 °F | 42.1 °F | 0.55 in. |
| April | 23.0 °F | 53.3 °F | 0.86 in. |
| May | 31.4 °F | 63.1 °F | 1.24 in. |
| June | 38.3 °F | 73.8 °F | 0.91 in. |
| July | 43.6 °F | 83.2 °F | 0.61 in. |
| August | 42.0 °F | 81.9 °F | 0.86 in. |
| September | 33.0 °F | 71.8 °F | 0.88 in. |
| October | 22.9 °F | 58.2 °F | 0.79 in. |
| November | 11.3 °F | 41.6 °F | 0.33 in. |
| December | 0.1 °F | 29.4 °F | 0.38 in. |
| Annual | 21.6 °F | 54.8 °F | 8.25 in. |
| 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 : -35°F to -30°F |
| Plant Hardiness Zone - 2012 | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfc - Subarctic With Cool Summers And Year Around Rainfall |