Wise River, Montana has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 24.9 °F (low) to 53.4 °F (high). Annual precipitation averages 12.4 Inches. Wise River 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 July 11 - July 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.3 °F | 31.5 °F | 0.52 in. |
| February | 10.3 °F | 34.3 °F | 0.54 in. |
| March | 17.4 °F | 42.8 °F | 0.63 in. |
| April | 24.4 °F | 50.6 °F | 0.96 in. |
| May | 31.6 °F | 60.0 °F | 1.81 in. |
| June | 38.1 °F | 68.5 °F | 2.0 in. |
| July | 42.5 °F | 80.0 °F | 1.27 in. |
| August | 40.4 °F | 79.2 °F | 1.0 in. |
| September | 33.9 °F | 69.2 °F | 1.12 in. |
| October | 25.7 °F | 54.6 °F | 1.01 in. |
| November | 16.3 °F | 39.9 °F | 0.81 in. |
| December | 8.4 °F | 30.1 °F | 0.68 in. |
| Annual | 24.9 °F | 53.4 °F | 12.35 in. |
| Average First Frost Date | July 11 - July 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 | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |