Holtsville New York Climate Data

Monthly Average Climate Data for Holtsville New York

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.3 °C4.2 °C99.57 mm
February-3.7 °C5.2 °C91.69 mm
March-0.2 °C8.9 °C129.79 mm
April4.9 °C14.8 °C109.73 mm
May10.3 °C20.3 °C100.08 mm
June15.8 °C25.3 °C111 mm
July19.2 °C28.4 °C85.34 mm
August18.5 °C27.4 °C105.16 mm
September14.8 °C24 °C101.85 mm
October8.7 °C17.9 °C123.7 mm
November3.1 °C12 °C98.04 mm
December-1.2 °C7.2 °C127.25 mm
Annual7.2 °C16.3 °C1283.2 mm

Climate Data for Holtsville New York

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
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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