Brookline Massachusetts Climate Data

Monthly Average Climate Data for Brookline Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-6.9 °C2.7 °C101.6 mm
February-6.1 °C4.1 °C92.46 mm
March-2.1 °C7.8 °C123.7 mm
April3.6 °C14.3 °C109.47 mm
May9.1 °C20.1 °C93.47 mm
June14.3 °C25.2 °C106.17 mm
July17.6 °C28.4 °C93.98 mm
August16.8 °C27.5 °C95.76 mm
September12.7 °C23.6 °C95.76 mm
October6.4 °C17.2 °C122.94 mm
November1.2 °C11.3 °C102.87 mm
December-3.4 °C5.8 °C125.73 mm
Annual5.3 °C15.7 °C1263.91 mm

Climate Data for Brookline Massachusetts

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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