Silver Gate, Montana has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 21.2 °F (low) to 47.7 °F (high). Annual precipitation averages 28.2 Inches. Silver Gate is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around Jun. 11 - Jun. 20 through the first frost around Aug. 11 - Aug. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.7 °F | 26.0 °F | 2.18 in. |
| February | 5.9 °F | 29.4 °F | 1.99 in. |
| March | 13.0 °F | 37.9 °F | 2.11 in. |
| April | 20.0 °F | 44.8 °F | 2.29 in. |
| May | 28.0 °F | 54.0 °F | 2.88 in. |
| June | 33.8 °F | 64.2 °F | 2.97 in. |
| July | 39.0 °F | 73.9 °F | 2.25 in. |
| August | 37.4 °F | 73.0 °F | 1.75 in. |
| September | 30.9 °F | 63.2 °F | 1.87 in. |
| October | 22.8 °F | 48.4 °F | 2.49 in. |
| November | 12.9 °F | 33.3 °F | 2.56 in. |
| December | 5.0 °F | 24.2 °F | 2.81 in. |
| Annual | 21.2 °F | 47.7 °F | 28.15 in. |
| Average First Frost Date | Aug. 11 - Aug. 20 |
| Average Last Frost Date | Jun. 11 - Jun. 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |