September typically marks the meteorological start of autumn in Vermont, bringing a noticeable shift from the warm, humid days of summer to cooler, crisper conditions. This transitional period is characterized by decreasing temperatures, vibrant foliage, and generally drier air. Average daytime highs gradually decline throughout the month, ranging from the low 70s Fahrenheit (low 20s Celsius) at the beginning to the low 60s Fahrenheit (mid-teens Celsius) by the end. Overnight lows follow a similar trend, dropping from the 50s Fahrenheit (low- to mid-teens Celsius) to the 40s Fahrenheit (single-digit Celsius). While sunny days are still common, the chance of precipitation increases slightly compared to the summer months.
This time of year offers a unique appeal for residents and visitors alike. The pleasant temperatures are ideal for outdoor activities like hiking, biking, and apple picking. The stunning autumn foliage, with its vibrant reds, oranges, and yellows, draws leaf-peepers from around the world, contributing significantly to the state’s tourism industry. Historically, September was a crucial month for Vermont’s agricultural communities, as it marked the harvest season for many crops. This historical significance is still celebrated today through various agricultural fairs and festivals held throughout the state.
