Murtaugh, Idaho has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 36.1 °F (low) to 61.5 °F (high). Annual precipitation averages 10.8 Inches. Murtaugh is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 20.4 °F | 36.9 °F | 1.28 in. |
| February | 23.3 °F | 42.1 °F | 0.76 in. |
| March | 29.2 °F | 52.3 °F | 1.07 in. |
| April | 33.8 °F | 59.2 °F | 1.07 in. |
| May | 41.7 °F | 68.5 °F | 1.39 in. |
| June | 48.5 °F | 77.9 °F | 0.73 in. |
| July | 55.4 °F | 88.2 °F | 0.22 in. |
| August | 53.3 °F | 87.1 °F | 0.38 in. |
| September | 45.1 °F | 77.1 °F | 0.55 in. |
| October | 35.3 °F | 63.2 °F | 0.92 in. |
| November | 26.4 °F | 48.3 °F | 0.94 in. |
| December | 20.3 °F | 37.0 °F | 1.5 in. |
| Annual | 36.1 °F | 61.5 °F | 10.81 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |