Smithtown New York Climate Data

Monthly Average Climate Data for Smithtown New York

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.3 °C4.1 °C98.81 mm
February-3.7 °C5.1 °C88.39 mm
March-0.2 °C8.8 °C124.21 mm
April5 °C15.2 °C110.49 mm
May10.4 °C20.7 °C99.57 mm
June15.9 °C25.5 °C110.49 mm
July19.2 °C28.5 °C87.12 mm
August18.6 °C27.6 °C107.44 mm
September14.8 °C23.9 °C103.89 mm
October8.8 °C17.7 °C125.73 mm
November3.1 °C12.1 °C95.5 mm
December-1.1 °C7.1 °C127.76 mm
Annual7.2 °C16.4 °C1279.4 mm

Climate Data for Smithtown 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 ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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