Woods Bay, Montana has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.7 °F (low) to 55.5 °F (high). Annual precipitation averages 23.4 Inches. Woods Bay is located in USDA Plant Hardiness Zone 6a. 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 | 19.5 °F | 32.6 °F | 2.02 in. |
| February | 20.1 °F | 36.2 °F | 1.39 in. |
| March | 25.8 °F | 44.9 °F | 1.57 in. |
| April | 32.1 °F | 54.4 °F | 2.08 in. |
| May | 39.6 °F | 64.5 °F | 2.31 in. |
| June | 46.0 °F | 70.7 °F | 3.76 in. |
| July | 50.5 °F | 81.7 °F | 1.37 in. |
| August | 49.0 °F | 81.4 °F | 1.05 in. |
| September | 41.8 °F | 70.4 °F | 1.74 in. |
| October | 33.2 °F | 55.3 °F | 2.07 in. |
| November | 26.6 °F | 41.0 °F | 2.07 in. |
| December | 20.6 °F | 32.6 °F | 1.96 in. |
| Annual | 33.7 °F | 55.5 °F | 23.39 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 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |