Climatological data for Boston in September typically reveals a period of transition from summer’s warmth to autumn’s cooler temperatures. Average high temperatures gradually decrease throughout the month, usually starting in the low 70s Fahrenheit (low 20s Celsius) and ending in the mid-60s Fahrenheit (high teens Celsius). Overnight lows follow a similar trend, shifting from the upper 50s Fahrenheit (mid-teens Celsius) to the low 50s Fahrenheit (low teens Celsius). September is also known for its diminishing humidity levels, offering a crispness to the air. Rainfall amounts tend to be moderate, and while sunshine is still prevalent, it becomes less intense as the days shorten.
Understanding typical September weather patterns in Boston is valuable for a variety of purposes. Travelers can plan their wardrobes and activities accordingly, packing layers to accommodate fluctuating temperatures. Residents can anticipate the changing conditions to prepare for outdoor activities, gardening, and home maintenance. Businesses reliant on weather, such as tourism and outdoor recreation, can use historical data to forecast demand and adjust operations. This information also provides a baseline against which to compare current year conditions, contributing to a better understanding of climate trends and potential anomalies.
