Islip New York Climate Data

Monthly Average Climate Data for Islip New York

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January25.1 °F39.4 °F3.9 in.
February26.2 °F41.2 °F3.46 in.
March32.2 °F47.6 °F4.91 in.
April41.6 °F58.5 °F4.3 in.
May51.0 °F68.2 °F3.75 in.
June61.0 °F77.3 °F4.22 in.
July67.3 °F82.7 °F3.39 in.
August66.1 °F82.1 °F4.14 in.
September59.6 °F74.7 °F3.92 in.
October48.5 °F63.7 °F4.86 in.
November38.7 °F54.0 °F3.72 in.
December31.1 °F44.7 °F4.9 in.
Annual45.7 °F61.2 °F49.47 in.

Climate Data for 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 : 5°F to 10°F
Plant Hardiness Zone - 2012Zone 7a : 0°F to 5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation