| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 83b - Champlain Lowlands |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 12993 - Westport, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 6 | 9 | 20 | 33 | 44 | 53 | 58 | 56 | 47 | 36 | 28 | 15 | 34 |
| Avg Max Temp (°F) | 28 | 31 | 41 | 54 | 68 | 77 | 81 | 79 | 69 | 57 | 45 | 33 | 55 |
| Avg Precip (In.) | 2.43 | 1.87 | 2.58 | 2.77 | 3.2 | 3.39 | 3.5 | 4 | 3.62 | 3.11 | 3.18 | 2.42 | 36.08 |