Westmere, New York has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4 °C (low) to 14.6 °C (high). Annual precipitation averages 1041.2 Millimeters. Westmere is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.2 °C | 0 °C | 67.31 mm |
| February | -8.4 °C | 1.7 °C | 60.2 mm |
| March | -3.8 °C | 6.6 °C | 76.96 mm |
| April | 2.6 °C | 14.4 °C | 80.52 mm |
| May | 8.9 °C | 20.9 °C | 84.07 mm |
| June | 14.1 °C | 25.5 °C | 110.24 mm |
| July | 16.6 °C | 28.2 °C | 110.24 mm |
| August | 15.8 °C | 27.1 °C | 97.54 mm |
| September | 11.4 °C | 23.2 °C | 92.2 mm |
| October | 5.2 °C | 15.9 °C | 103.63 mm |
| November | -0.3 °C | 9.2 °C | 71.88 mm |
| December | -5.2 °C | 3 °C | 86.36 mm |
| Annual | 4 °C | 14.6 °C | 1041.15 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |