Esterbrook, Wyoming has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 31.9 °F (low) to 55.6 °F (high). Annual precipitation averages 16.3 Inches. Esterbrook is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.1 °F | 33.7 °F | 0.43 in. |
| February | 15.4 °F | 35.5 °F | 0.69 in. |
| March | 22.4 °F | 44.8 °F | 0.93 in. |
| April | 28.3 °F | 51.7 °F | 2.05 in. |
| May | 37.3 °F | 61.2 °F | 2.81 in. |
| June | 45.9 °F | 73.4 °F | 2.61 in. |
| July | 53.1 °F | 82.0 °F | 1.49 in. |
| August | 51.4 °F | 80.6 °F | 1.22 in. |
| September | 43.1 °F | 71.3 °F | 1.35 in. |
| October | 32.2 °F | 56.6 °F | 1.5 in. |
| November | 22.6 °F | 42.9 °F | 0.65 in. |
| December | 15.4 °F | 33.5 °F | 0.58 in. |
| Annual | 31.9 °F | 55.6 °F | 16.31 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 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 | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |