Boston Weather History (MA)

Summary
  Temp.
(ºF)
Relative Humidity
(Percentage)
Extreme Temp.
(Days Per Month)
Rain
(Inches)
Cloudiness
(Days Per Month)
  Average A.M. P.M. Below
32º
Above
90º
Average Clear Partly
Cloudy
Cloudy
January 28.6 68% 58% 26 0 3.6 9 7 15
February 30.3 68% 57% 23 0 3.6 8 7 13
March 38.6 70% 57% 16 0 3.7 8 8 15
April 48.1 69% 55% 2 N/A 3.6 7 8 15
May 58.2 72% 60% 0 N/A 3.3 6 10 15
June 67.7 73% 58% 0 3 3.1 7 10 13
July 73.5 74% 57% 0 6 2.8 7 12 12
August 71.9 77% 59% 0 3 3.2 9 11 11
September 64.8 79% 60% 0 1 3.1 10 8 12
October 54.8 77% 58% 0 0 3.3 11 8 12
November 45.3 74% 59% 7 0 4.2 8 7 15
December 33.6 70% 59% 21 0 4.0 9 7 15
Annual 51.3 73% 58% 96 12 41.5 98 103 164


Average Temperature (ºF)
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
28.6 30.3 38.6 48.1 58.2 67.7 73.5 71.9 64.8 54.8 45.3 33.6

Relative Humidity (Percentage)
Morning
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
68% 68% 70% 69% 72% 73% 74% 77% 79% 77% 74% 70%
Afternoon
58% 57% 57% 55% 60% 58% 57% 59% 60% 58% 59% 59%

Rain (Inches)
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
3.6 3.6 3.7 3.6 3.3 3.1 2.8 3.2 3.1 3.3 4.2 4.0

Cloudiness (Days Per Month)
  January February March
Clear 9 Days 8 Days 8 Days
Partly Cloudy 7 Days 7 Days 8 Days
Cloudy 15 Days 15 Days 15 Days
  April May June
Clear 7 Days 6 Days 7 Days
Partly Cloudy 8 Days 10 Days 10 Days
Cloudy 15 Days 15 Days 13 Days
  July August September
Clear 7 Days 9 Days 10 Days
Partly Cloudy 12 Days 11 Days 8 Days
Cloudy 12 Days 11 Days 12 Days
  October November December
Clear 11 Days 8 Days 9 Days
Partly Cloudy 8 Days 7 Days 7 Days
Cloudy 12 Days 15 Days 15 Days
  Clear Partly Cloudy Cloudy
 
Days Per Year 98 103 164


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