Stamford, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.5 °F (low) to 55.3 °F (high). Annual precipitation averages 45.1 Inches. Stamford is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 11.4 °F | 30.7 °F | 2.95 in. |
| February | 13.0 °F | 32.9 °F | 2.45 in. |
| March | 19.8 °F | 41.2 °F | 3.46 in. |
| April | 30.5 °F | 54.5 °F | 3.9 in. |
| May | 40.4 °F | 66.5 °F | 4.02 in. |
| June | 50.1 °F | 74.0 °F | 4.57 in. |
| July | 54.3 °F | 77.9 °F | 4.52 in. |
| August | 53.1 °F | 76.7 °F | 4.34 in. |
| September | 46.3 °F | 70.4 °F | 3.93 in. |
| October | 35.9 °F | 58.2 °F | 4.3 in. |
| November | 27.3 °F | 45.5 °F | 3.45 in. |
| December | 19.3 °F | 35.6 °F | 3.2 in. |
| Annual | 33.5 °F | 55.3 °F | 45.09 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |