Commack, New York has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.2 °F (low) to 61.8 °F (high). Annual precipitation averages 48.8 Inches. Commack is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.5 °F | 39.5 °F | 3.74 in. |
| February | 25.6 °F | 41.6 °F | 3.23 in. |
| March | 31.9 °F | 49.0 °F | 4.41 in. |
| April | 40.9 °F | 60.2 °F | 4.25 in. |
| May | 50.9 °F | 70.1 °F | 3.76 in. |
| June | 60.8 °F | 78.6 °F | 4.12 in. |
| July | 66.7 °F | 83.7 °F | 3.45 in. |
| August | 65.6 °F | 81.6 °F | 4.4 in. |
| September | 58.9 °F | 75.0 °F | 4.16 in. |
| October | 47.9 °F | 64.0 °F | 4.78 in. |
| November | 37.9 °F | 53.5 °F | 3.68 in. |
| December | 30.5 °F | 44.9 °F | 4.78 in. |
| Annual | 45.2 °F | 61.8 °F | 48.76 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |