Northumberland New York Climate Data

Monthly Average Climate Data for Northumberland New York

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.5 °F31.5 °F3.32 in.
February14.5 °F34.6 °F2.5 in.
March23.5 °F43.6 °F3.29 in.
April35.4 °F57.9 °F3.72 in.
May46.7 °F70.2 °F3.63 in.
June55.8 °F78.3 °F4.56 in.
July60.1 °F83.0 °F4.53 in.
August58.8 °F80.9 °F4.25 in.
September51.2 °F73.8 °F3.84 in.
October40.3 °F60.8 °F4.31 in.
November30.4 °F48.1 °F3.35 in.
December21.5 °F36.6 °F3.74 in.
Annual37.6 °F58.3 °F45.04 in.

Climate Data for Northumberland New York

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year