Newton Massachusetts Climate Data

Monthly Average Climate Data for Newton Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.6 °C2.5 °C98.81 mm
February-6.7 °C3.9 °C88.65 mm
March-2.6 °C7.8 °C119.63 mm
April3 °C14.6 °C107.44 mm
May8.5 °C20.4 °C93.98 mm
June13.7 °C25.4 °C106.68 mm
July17 °C28.7 °C92.71 mm
August16.2 °C27.8 °C96.52 mm
September12.1 °C23.9 °C95.5 mm
October5.7 °C17.3 °C122.17 mm
November0.6 °C11.3 °C102.36 mm
December-4.1 °C5.6 °C122.43 mm
Annual4.7 °C15.8 °C1246.88 mm

Climate Data for Newton Massachusetts

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year