Boston Weather Records

Boston, Massachusetts weather averages and records from 1893–2022 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Boston, Massachusetts was 104 °F which occurred on July 4, 1911.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Boston, Massachusetts was -18 °F which occurred on February 9, 1934.
Lowest Temperatures: All-Time By Year
Boston Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧 Snow ❄️
January 37.2 23.3 74 -12 3.4 14.3
February 39.4 24.8 73 -18 3.2 14.4
March 45.8 31.3 89 1 4.2 9.0
April 56.6 40.9 94 13 3.6 1.6
May 66.7 50.4 96 33 3.2 0.0
June 76.4 59.9 100 41 3.9 0.0
July 82.3 66.3 104 50 3.3 0.0
August 80.7 65.3 102 46 3.1 0.0
September 73.4 58.4 100 34 3.6 0.0
October 62.4 47.7 90 25 4.0 0.2
November 51.9 38.0 83 8 3.7 0.7
December 42.5 29.4 76 -17 4.3 9.1
Entire year 59.7 44.7 104 -18 43.5 49.3
More Boston Weather Records
1893–2022
Highest daily low 83 °F July 21, 2019
Lowest daily high 2 °F December 30, 1917
Greatest daily range
(Difference of high and low)
47 °F May 15, 1900
Difference in high temperature
over two conscutive days
44 °F Apr 16–17, 2003
Most daily precipitation 7.1 inches August 19, 1955
Most monthly precipitation 17.1 inches August 1955
Most yearly precipitation 62.3 inches 1954
Earliest freeze October 18 1939
Latest freeze April 29 1909
Earliest snow in season October 18 2009
Latest snow in season May 10 1977
Most daily snow 23.6 inches January 29, 2022
Most monthly snow 64.8 inches February 2015
Most yearly snow 108.6 inches 2015
Most days in a year ≥ 80 °F 83 1983
Most days in a year ≥ 90 °F 30 1983
Most days in a year ≥ 100 °F 4 1911
Boston Weather Streaks
Most consecutive days...
With precipitation 13 days Jan 11–23, 1995
Without precipitation 44 days Oct 9 – Nov 21, 1924
With snow 9 days Mar 2–10, 1916
Freezing temperatures
High temperature ≤ 32 °F
16 days Jan 19 – Feb 3, 1961
High temperature ≥ 80 °F 26 days Jul 15 – Aug 9, 2022
High temperature ≥ 90 °F 9 days Jul 3–11, 1912
Facts About Boston Weather
Boston Weather by Year
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Weather Station Details
Years Station Coordinates
1936–2022 Boston Logan International Airport location
1893–1935 Boston City location