Boston Weather In May

The highest recorded temperature in May for Boston Massachusetts for the past 54 years was 24 degrees Celsius, measured on May 7, 1998, while the regular high temperature is 19. The record low May temperature in Boston for the last 54 years was -27 measured on May 30, 1933, and the mean daily low in the month is 10.

According to National Weather Service historical Boston May Weather data, on May 20, 1942, the high temperature did not exceed -13 degrees Celsius, the lowest high measured in Boston in the past 54 years. NWS data also shows that on May 1, 2006, the lowest measured temperature on that day did not drop below 15 degrees, the highest low temperature measured in Boston in the last 54 years.

Historical weather data accumulated by the National Weather Service shows that the average daily high temperature in Boston on May First is 7 degrees Celsius and the average high on the last day of May is 3 degrees. The low recorded temperature in Boston on May First averages -1 degrees Celsius and the low temperature on the final day of May averages -4 degrees.

Boston normally receives an average of 8.23 centimeters of rain during May. According to May Boston Weather records, the most rain measured in a single day in May was 10.69 centimeters on May 12, 1992.