Cortland New York Climate Data

Monthly Average Climate Data for Cortland New York

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.3 °F31.1 °F2.97 in.
February15.3 °F33.2 °F2.57 in.
March22.1 °F40.8 °F3.32 in.
April33.7 °F54.3 °F3.52 in.
May44.7 °F67.1 °F3.34 in.
June54.0 °F75.4 °F4.28 in.
July58.3 °F79.8 °F4.14 in.
August56.9 °F78.5 °F3.56 in.
September49.4 °F71.7 °F3.98 in.
October39.2 °F58.9 °F3.81 in.
November30.5 °F46.7 °F3.2 in.
December21.6 °F36.1 °F3.58 in.
Annual36.7 °F56.1 °F42.27 in.

Climate Data for Cortland 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 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year