Boston is the best place to understand the real distinction between seasons. It transforms so beautifully with each season and becomes completely new every time. The clear sunny days in summer, the crisp afternoons in autumn, the beautiful mornings of spring and gentle snowflakes which accompany you in winter are a treat to watch. There are four seasons in Boston:Spring: Part of March, April, May, and the first part of June - typically starts out cold and often windy. The weather is quite unpredictable during this time so carry a jacket, lightweight rain coat or a sweater.
Summer: Summer seasons starts from June and goes up to August. It is the best time to experience outdoor activities and a warm Boston. Although it can be painfully humid during summer.
Fall: September, October, November is when Boston weather usually produces the highest number of perfect days and is actually the best time to visit Boston as the city is not flocking with tourists.
Winter: Starts in December and takes in a part of March. The days are chilly but the nights are frosting. A major part of the city stays shut during this time.
Hottest month of the year is July, with an average high temperature of 27 degrees celsius and an average low temperature of 18 degree Celsius. The coldest month of the year is January, with an average high temperature of 2 Degree Celsius, and an average low temperature of -5 Degree Celsius.