Lockwood, Montana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 34.2 °F (low) to 61.8 °F (high). Annual precipitation averages 14.7 Inches. Lockwood is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.2 °F | 37.6 °F | 0.47 in. |
| February | 16.8 °F | 41.4 °F | 0.5 in. |
| March | 24.5 °F | 51.9 °F | 0.84 in. |
| April | 33.0 °F | 60.1 °F | 1.89 in. |
| May | 42.2 °F | 69.3 °F | 2.31 in. |
| June | 50.6 °F | 79.1 °F | 2.39 in. |
| July | 56.5 °F | 88.9 °F | 1.22 in. |
| August | 54.2 °F | 87.6 °F | 1.02 in. |
| September | 45.0 °F | 77.0 °F | 1.48 in. |
| October | 33.7 °F | 62.3 °F | 1.52 in. |
| November | 23.6 °F | 48.5 °F | 0.51 in. |
| December | 15.5 °F | 38.4 °F | 0.54 in. |
| Annual | 34.2 °F | 61.8 °F | 14.69 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |