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Boston, Massachusetts Climate & Temperature

  • Boston, Massachusetts, Usa is at 4222'N, 711'W, 9 m (30 ft). See map.
  • Boston, Massachusetts has a humid subtropical climate that is mild with no dry season, constantly moist (year-round rainfall). Summers are hot and muggy with thunderstorms. Winters are mild with precipitation from mid-latitude cyclones. Seasonality is moderate. (Kppen-Geiger classification: Cfa).
  • According to the Holdridge life zones system of bioclimatic classification Boston, Massachusetts is situated in or near the cool temperate moist forest biome.
  • The average temperature is 10.7 degrees Celsius (51.3 degrees Fahrenheit). See the temperatures page for a monthly breakdown and the fixed scale graph.
  • Average monthly temperatures vary by 25 °C (45°F). This indicates that the continentality type is continental, subtype subcontinental. Boston, Massachusetts Climate Graph
  • In the winter time records indicate temperatures by day reach 3.3°C (37.9°F) on average falling to -4.6°C (23.8°F) overnight.
  • In spring time temperatures climb reaching 13.4°C (56.1°F) generally in the afternoon with overnight lows of 4.7°C (40.5°F).
  • During summer average high temperatures are 26.3°C (79.3°F) and average low temperatures are 17.1°C (62.8°F).
  • Come autumn/ fall temperatures decrease achieving average highs of 17°C (62.6°F) during the day and lows of 8.5°C (47.4°F) generally shortly after sunrise.
  • Total annual Precipitation averages 1054.3 mm (41.5 inches) which is equivalent to 1054.3 Litres/m (25.86 Gallons/ft).
  • On average there are 2739 hours of sunshine per year. Visit the sunshine and daylight section to check monthly details including how high in the sky the sun reaches each month.
  • Were you to burrow down through the centre of the Earth from Boston, Massachusetts you would pop up nearest to the climate station at Albany, Western Australia, Australia where you would find a Mediterranean climate.

Boston, Massachusetts Climate Table

  Climate Variable Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 
Average Max Temperature °C ( °F) 2 (36) 3 (38) 8 (46) 13 (56) 19 (67) 25 (76) 28 (82) 27 (80) 23 (73) 17 (63) 11 (52) 5 (40) 15 (59)
 
Average Temperature °C ( °F) -2 (29) -1 (30) 4 (39) 9 (48) 15 (58) 20 (68) 23 (74) 22 (72) 18 (65) 13 (55) 7 (45) 1 (34) 11 (51)
 
Average Min Temperature °C ( °F) -6 (22) -5 (23) 0 (31) 5 (40) 10 (50) 15 (59) 18 (65) 18 (64) 14 (57) 8 (47) 4 (38) -3 (27) 6 (44)
 
Average Precipitation mm (in) 91 (4) 92 (4) 94 (4) 91 (4) 83 (3) 79 (3) 72 (3) 82 (3) 78 (3) 84 (3) 107 (4) 102 (4) 1054 (42)
Number of Wet Days (probability of rain on a day %) 12 (39) 11 (39) 12 (39) 12 (40) 12 (39) 11 (37) 10 (32) 10 (32) 9 (30) 9 (29) 10 (33) 10 (32) 128 (35)
Average Sunlight Hours/ Day 4h 52' 6h 11' 6h 48' 7h 12' 8h 48' 10h 08' 10h 30' 9h 15' 8h 16' 7h 03' 5h 28' 5h 19' 7h 29'
Average Daylight Hours/ Day 9h 27' 10h 29' 11h 52' 13h 20' 14h 34' 15h 13' 14h 56' 13h 51' 12h 26' 10h 58' 9h 44' 9h 07' 12h 00'
Percentage of Sunny (Cloudy) Daylight Hours 52 (48) 60 (40) 58 (42) 55 (45) 61 (39) 67 (33) 71 (29) 68 (32) 67 (33) 65 (35) 57 (43) 59 (41) 62 (38)
Sun altitude at solar noon on the 21st day (). 27.8 37.2 48 59.6 67.9 71.1 68 59.6 48.2 36.7 27.6 24.2 47.9

Get Greater Insight into Boston, Massachusettss Climate

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