Altamont, Utah has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 31.2 °F (low) to 57.2 °F (high). Annual precipitation averages 9.7 Inches. Altamont is located in USDA Plant Hardiness Zone 5b. 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 | 9.5 °F | 30.6 °F | 0.71 in. |
| February | 14.2 °F | 36.2 °F | 0.56 in. |
| March | 23.4 °F | 48.1 °F | 0.55 in. |
| April | 29.3 °F | 56.3 °F | 0.86 in. |
| May | 38.3 °F | 65.6 °F | 1.11 in. |
| June | 46.2 °F | 76.6 °F | 0.79 in. |
| July | 53.5 °F | 83.9 °F | 0.69 in. |
| August | 51.8 °F | 81.7 °F | 0.98 in. |
| September | 43.4 °F | 72.6 °F | 1.24 in. |
| October | 32.1 °F | 58.7 °F | 1.03 in. |
| November | 21.4 °F | 44.0 °F | 0.54 in. |
| December | 10.9 °F | 31.7 °F | 0.65 in. |
| Annual | 31.2 °F | 57.2 °F | 9.71 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |