West Islip New York Climate Data

Monthly Average Climate Data for West Islip New York

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-3.6 °C4.2 °C97.03 mm
February-3 °C5.3 °C82.55 mm
March0.4 °C8.8 °C117.35 mm
April5.5 °C15 °C106.43 mm
May10.7 °C20.4 °C88.39 mm
June16.3 °C25.4 °C100.84 mm
July19.7 °C28.5 °C83.06 mm
August19.2 °C28 °C103.89 mm
September15.4 °C24.1 °C96.52 mm
October9.4 °C17.9 °C118.87 mm
November3.9 °C12.2 °C89.92 mm
December-0.3 °C7.1 °C116.84 mm
Annual7.8 °C16.4 °C1201.69 mm

Climate Data for West Islip New York

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7b : -15°C to -12.2°C
Plant Hardiness Zone - 2012Zone 7a : -17.8°C to -15°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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