text: The hottest month is July, with a 24-hour average of , while the coldest is January, at . There are an average of only 3.5 days of highs at or above  and 4.1 nights of lows at or below  per year, and periods of either extremes are rarely sustained. The all-time record high temperature is , recorded on July 4, 1911, the only  or greater temperature to date. The all-time record low temperature is , recorded on February 16, 1943.
  Worcester is known for being particularly snowy in the cold months, sometimes even experiencing intense autumn blizzards. The city averages  of precipitation a year, as well as an average of  of snowfall a season, receiving far more snow than coastal locations less than  away. Massachusetts' geographic location, jutting out into the North Atlantic, as well as Worcester's elevation relative to the surrounding terrain, makes the city very prone to Nor'easter weather systems that can dump heavy snow on the region. Extreme winters have brought up to  of snowfall, as happened in 2005. In late January 2015, a blizzard traversed over the city as it shed almost  of snow. This was the highest single-day snowfall total for anywhere in Massachusetts since data collection began in 1892.
  While rare, the city has had its share of extreme weather. On September 21, 1938, the city was hit by the brutal New England Hurricane of 1938. Fifteen years later, Worcester was hit by a tornado that killed 94 people. The deadliest tornado in New England history, it damaged a large part of the city and surrounding towns. It struck Assumption Preparatory School, now the site of Quinsigamond Community College.