Victor, Montana has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.1 °F (low) to 59.4 °F (high). Annual precipitation averages 12.8 Inches. Victor is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.2 °F | 35.7 °F | 0.94 in. |
| February | 20.2 °F | 40.6 °F | 0.89 in. |
| March | 25.4 °F | 50.3 °F | 0.84 in. |
| April | 30.8 °F | 58.5 °F | 0.98 in. |
| May | 37.7 °F | 67.9 °F | 1.52 in. |
| June | 44.2 °F | 75.3 °F | 1.67 in. |
| July | 48.6 °F | 86.8 °F | 0.8 in. |
| August | 46.9 °F | 85.5 °F | 0.81 in. |
| September | 39.8 °F | 74.8 °F | 0.87 in. |
| October | 31.2 °F | 59.3 °F | 1.03 in. |
| November | 23.7 °F | 43.4 °F | 1.22 in. |
| December | 18.1 °F | 34.2 °F | 1.18 in. |
| Annual | 32.1 °F | 59.4 °F | 12.75 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |