Camp Three, Montana has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 33.3 °F (low) to 61.1 °F (high). Annual precipitation averages 14.8 Inches. Camp Three is located in USDA Plant Hardiness Zone 4b. 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 | 14.1 °F | 37.5 °F | 0.43 in. |
| February | 16.1 °F | 40.4 °F | 0.41 in. |
| March | 23.5 °F | 50.2 °F | 0.73 in. |
| April | 31.6 °F | 59.2 °F | 1.67 in. |
| May | 40.9 °F | 68.6 °F | 2.6 in. |
| June | 49.2 °F | 77.7 °F | 2.85 in. |
| July | 55.4 °F | 89.0 °F | 1.77 in. |
| August | 53.4 °F | 87.0 °F | 1.09 in. |
| September | 43.8 °F | 76.5 °F | 1.13 in. |
| October | 33.4 °F | 61.8 °F | 1.17 in. |
| November | 22.9 °F | 47.4 °F | 0.46 in. |
| December | 15.0 °F | 37.5 °F | 0.45 in. |
| Annual | 33.3 °F | 61.1 °F | 14.76 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 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |