Boston - Temperature Averages by Decade





Summarized here are the temperatures extending over eight decades at Boston, Massachusetts. Listed for every decade from the 1940s to the 2010s are averages for maximum and minimum daily temperatures in degrees Fahrenheit and Celsius. That's followed with information on the number of hot and cold days.

Each decade covers a standard 10-year range. For instance the 1990s includes weather measurements from Jan 1, 1990 to Dec 31, 1999. The 2010s data go to the end of 2018. All the temperature data were collected at Boston's Logan International Airport.

High Temperature for Each Decade

Average daily maximum temperature at Boston
High °F Decade High °C
60.2 2010s 15.7
58.9 2000s 15.0
59.6 1990s 15.3
58.9 1980s 14.9
59.3 1970s 15.2
58.0 1960s 14.5
59.5 1950s 15.3
59.0 1940s 15.0

Low Temperature for Each Decade

Average daily minimum temperature at Boston
Low °F Decade Low °C
45.3 2010s 7.4
44.2 2000s 6.8
44.3 1990s 6.8
43.5 1980s 6.4
43.9 1970s 6.6
43.0 1960s 6.1
43.9 1950s 6.6
42.9 1940s 6.1

Hot Days per Decade

Total days per year on average when the temperature in Boston reached at least 70 or 90 °F
Decade 70 °F
21 °C
90 °F
32 °C
2010s 130 16
2000s 121 11
1990s 123 14
1980s 122 14
1970s 126 14
1960s 118 10
1950s 125 13
1940s 126 13

Cold Days per Decade

Total days per year on average when the temperature in Boston dropped to 0 or 32 °F or lower
Decade 0 °F
-18 °C
32 °F
0 °C
2010s 1 91
2000s 1 95
1990s 0 90
1980s 1 101
1970s 1 97
1960s 1 103
1950s 1 91
1940s 1 103
Reference

Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Year, Version 1.0. NOAA National Centers for Environmental Information.

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