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Weather in May in Boston, Massachusetts

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< May >
 
Normal Max/ High Temperature 19°C (67°F)
 
Average Temperature 15°C (58°F)
 
Min/ Low Temperature 10°C (50°F)
Average Sea or Water Temp 12°C(54°F)
 
Normal Precipitation 83mm (3.3in)
Number of Wet Days (probability of rain on a day) 12 (39%)
Average Sunlight per day 08:48
Average Daylight per day 14:34
Sunny (Cloudy) Daylight Hours 61% (39%)
Sun altitude at solar noon on the 21st day.
67.9°


  • The average sea tempeature is 12 °C (53.6 °F).
  • The average temperature in Boston, Massachusetts in May is mild at 14.6 °C (58.28 °F).
  • Afternoons can be somewhat warm with average high temperatures reaching 19.2 °C (66.6 °F).
  • Overnight temperatures are generally a little cool with an average low of 9.9 °C (49.8 °F).
  • In May the average daily temperature range/ variation is 9.3 °C (16.7 °F).
  • The weather in May is dryish with rain occasionally. Just 82.6mm (3.3in) of H2O falls during an average of 12 days.
  • In May the heavens above Boston, Massachusetts are quite sunny having on balance a sizable 8:48 of gorgeous solar radiation per day.
  • The shortest day is 14:01 long and the longest day is 15:01 long with an average length of 14:34.
  • There are approximately 5:35 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
  • It is sunny approximately 61.1% of daylight hours and cloudy 38.9% of daylight hours.

Check the distance to and compare the Boston, Massachusetts May averages with somewhere beginning with:

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Weather Trend Graph for May in Boston, Massachusetts, Usa

Graph of weather in Boston, Massachusetts in May

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