Montrose, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.6 °C (low) to 16.4 °C (high). Annual precipitation averages 1367 Millimeters. Montrose 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 Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.3 °C | 3.5 °C | 103.89 mm |
| February | -6.4 °C | 5.4 °C | 98.3 mm |
| March | -2.7 °C | 10.2 °C | 117.09 mm |
| April | 2.5 °C | 17.1 °C | 117.6 mm |
| May | 8 °C | 21.5 °C | 145.29 mm |
| June | 12.7 °C | 25.5 °C | 138.94 mm |
| July | 14.9 °C | 27.3 °C | 152.65 mm |
| August | 14.2 °C | 26.8 °C | 108.2 mm |
| September | 10.4 °C | 23.9 °C | 96.52 mm |
| October | 3.7 °C | 17.9 °C | 93.22 mm |
| November | -1.6 °C | 11.3 °C | 86.11 mm |
| December | -4.7 °C | 5.8 °C | 109.22 mm |
| Annual | 3.6 °C | 16.4 °C | 1367.03 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |