North Rock Springs, Wyoming has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 29.9 °F (low) to 57.4 °F (high). Annual precipitation averages 9.8 Inches. North Rock Springs is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 10.9 °F | 32.6 °F | 0.54 in. |
| February | 12.7 °F | 35.7 °F | 0.49 in. |
| March | 21.9 °F | 46.1 °F | 0.67 in. |
| April | 28.3 °F | 55.4 °F | 1.3 in. |
| May | 36.7 °F | 65.0 °F | 1.81 in. |
| June | 44.5 °F | 76.6 °F | 0.96 in. |
| July | 51.3 °F | 85.3 °F | 0.47 in. |
| August | 49.6 °F | 83.2 °F | 0.56 in. |
| September | 40.9 °F | 73.8 °F | 1.03 in. |
| October | 30.8 °F | 59.3 °F | 0.83 in. |
| November | 20.3 °F | 43.8 °F | 0.64 in. |
| December | 10.7 °F | 32.5 °F | 0.49 in. |
| Annual | 29.9 °F | 57.4 °F | 9.79 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |