South Deerfield Massachusetts Climate Data

Monthly Average Climate Data for South Deerfield Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-10.1 °C0.7 °C87.38 mm
February-9.4 °C2.4 °C78.74 mm
March-4.7 °C7.2 °C93.47 mm
April1.3 °C14.7 °C99.31 mm
May7.3 °C21 °C96.01 mm
June12.7 °C25.7 °C119.89 mm
July15.6 °C28.6 °C106.43 mm
August14.6 °C27.6 °C112.27 mm
September10.2 °C23.7 °C119.13 mm
October3.8 °C16.2 °C125.48 mm
November-1.7 °C9.5 °C91.69 mm
December-6.3 °C3.6 °C108.97 mm
Annual2.8 °C15.1 °C1238.77 mm

Climate Data for South Deerfield Massachusetts

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
2025 plantmaps.com