Brookline Massachusetts Climate Data

Monthly Average Climate Data for Brookline Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.5 °F36.8 °F4.0 in.
February21.1 °F39.3 °F3.64 in.
March28.3 °F46.0 °F4.87 in.
April38.5 °F57.8 °F4.31 in.
May48.3 °F68.2 °F3.68 in.
June57.7 °F77.4 °F4.18 in.
July63.7 °F83.2 °F3.7 in.
August62.2 °F81.5 °F3.77 in.
September54.9 °F74.5 °F3.77 in.
October43.6 °F62.9 °F4.84 in.
November34.2 °F52.3 °F4.05 in.
December25.9 °F42.4 °F4.95 in.
Annual41.5 °F60.2 °F49.76 in.

Climate Data for Brookline Massachusetts

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation