Smithtown New York Climate Data

Monthly Average Climate Data for Smithtown New York

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.2 °F39.3 °F3.89 in.
February25.3 °F41.1 °F3.48 in.
March31.6 °F47.9 °F4.89 in.
April41.0 °F59.4 °F4.35 in.
May50.7 °F69.2 °F3.92 in.
June60.6 °F77.9 °F4.35 in.
July66.6 °F83.3 °F3.43 in.
August65.5 °F81.6 °F4.23 in.
September58.7 °F75.1 °F4.09 in.
October47.8 °F63.9 °F4.95 in.
November37.6 °F53.7 °F3.76 in.
December30.1 °F44.7 °F5.03 in.
Annual45 °F61.4 °F50.37 in.

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 : 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