Alamo, Nevada has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 42.4 °F (low) to 75.7 °F (high). Annual precipitation averages 7.1 Inches. Alamo is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.3 °F | 54.3 °F | 0.89 in. |
| February | 28.7 °F | 57.9 °F | 1.04 in. |
| March | 34.1 °F | 65.7 °F | 0.84 in. |
| April | 39.6 °F | 72.9 °F | 0.55 in. |
| May | 48.0 °F | 82.3 °F | 0.47 in. |
| June | 56.4 °F | 93.1 °F | 0.15 in. |
| July | 63.6 °F | 99.1 °F | 0.57 in. |
| August | 62.1 °F | 97.2 °F | 0.58 in. |
| September | 52.3 °F | 90.7 °F | 0.38 in. |
| October | 41.4 °F | 77.8 °F | 0.53 in. |
| November | 30.6 °F | 63.9 °F | 0.51 in. |
| December | 25.2 °F | 52.9 °F | 0.54 in. |
| Annual | 42.4 °F | 75.7 °F | 7.05 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |