Montrose, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.8 °F (low) to 54.8 °F (high). Annual precipitation averages 47.7 Inches. Montrose is located in USDA Plant Hardiness Zone 5b. 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 | 13.3 °F | 29.6 °F | 3.53 in. |
| February | 14.3 °F | 32.1 °F | 2.78 in. |
| March | 21.6 °F | 40.3 °F | 3.56 in. |
| April | 33.1 °F | 54.1 °F | 4.17 in. |
| May | 44.2 °F | 65.8 °F | 3.99 in. |
| June | 53.5 °F | 73.8 °F | 4.68 in. |
| July | 57.7 °F | 78.4 °F | 4.63 in. |
| August | 56.1 °F | 76.7 °F | 4.51 in. |
| September | 48.6 °F | 69.9 °F | 4.33 in. |
| October | 38.0 °F | 57.6 °F | 4.72 in. |
| November | 28.8 °F | 45.1 °F | 3.32 in. |
| December | 20.2 °F | 34.4 °F | 3.47 in. |
| Annual | 35.8 °F | 54.8 °F | 47.69 in. |
| 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 5b : -15°F to -10°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 |