Finley Point, Montana has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.4 °F (low) to 56.6 °F (high). Annual precipitation averages 17.1 Inches. Finley Point is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 20.3 °F | 33.4 °F | 1.3 in. |
| February | 21.0 °F | 36.9 °F | 1.01 in. |
| March | 26.6 °F | 46.2 °F | 1.17 in. |
| April | 32.8 °F | 56.0 °F | 1.61 in. |
| May | 40.1 °F | 65.5 °F | 1.95 in. |
| June | 46.6 °F | 72.0 °F | 2.58 in. |
| July | 51.3 °F | 83.1 °F | 0.98 in. |
| August | 49.8 °F | 82.9 °F | 0.77 in. |
| September | 42.6 °F | 71.8 °F | 1.26 in. |
| October | 33.8 °F | 56.3 °F | 1.67 in. |
| November | 26.9 °F | 41.7 °F | 1.36 in. |
| December | 21.1 °F | 33.4 °F | 1.42 in. |
| Annual | 34.4 °F | 56.6 °F | 17.08 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |