Lavina, Montana has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 32.3 °F (low) to 60.5 °F (high). Annual precipitation averages 14.4 Inches. Lavina is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.7 °F | 37.9 °F | 0.42 in. |
| February | 15.5 °F | 40.7 °F | 0.43 in. |
| March | 22.7 °F | 50.1 °F | 0.77 in. |
| April | 30.5 °F | 58.1 °F | 1.64 in. |
| May | 39.7 °F | 67.4 °F | 2.65 in. |
| June | 48.2 °F | 76.6 °F | 2.74 in. |
| July | 54.0 °F | 87.2 °F | 1.49 in. |
| August | 51.7 °F | 86.4 °F | 1.01 in. |
| September | 42.6 °F | 75.4 °F | 1.12 in. |
| October | 32.1 °F | 61.0 °F | 1.19 in. |
| November | 22.0 °F | 47.3 °F | 0.51 in. |
| December | 14.4 °F | 37.9 °F | 0.45 in. |
| Annual | 32.3 °F | 60.5 °F | 14.42 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| 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 |