National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Boston, Logan International Airport (KBOS)

Lat: 42.36°NLon: 71.01°WElev: 20ft.

Mostly Cloudy

74°F

23°C

Humidity 71%
Wind Speed W 6 mph
Barometer 29.90 in (1012.6 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 20 Aug 2:54 am EDT
Extended Forecast for

Somerville MA

  • Overnight

    Overnight: Mostly clear, with a low around 69. Light west wind.

    Low: 69 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 87. Northwest wind around 5 mph becoming calm in the morning.

    High: 87 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Showers likely, mainly between 10pm and 11pm. Mostly cloudy, with a low around 64. Northwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 64 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers, mainly after 5pm. Partly sunny, with a high near 79. Northeast wind 5 to 9 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 79 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers before 9pm, then a chance of showers after 10pm. Mostly cloudy, with a low around 64. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 5pm. Some of the storms could produce heavy rainfall. High near 75. Northeast wind 7 to 10 mph. Chance of precipitation is 90%.

    High: 75 °F

    Heavy Rain

  • Saturday Night

    Saturday Night: Showers, mainly before 11pm. Low around 64. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 64 °F

    Showers then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers after 8am. Mostly cloudy, with a high near 82. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 50%.

    High: 82 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 11pm. Mostly cloudy, with a low around 66. Light south wind. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 69. Light west wind.
Thursday
Increasing clouds, with a high near 87. Northwest wind around 5 mph becoming calm in the morning.
Thursday Night
Showers likely, mainly between 10pm and 11pm. Mostly cloudy, with a low around 64. Northwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
A chance of showers, mainly after 5pm. Partly sunny, with a high near 79. Northeast wind 5 to 9 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A slight chance of showers before 9pm, then a chance of showers after 10pm. Mostly cloudy, with a low around 64. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Saturday
Showers, with thunderstorms also possible after 5pm. Some of the storms could produce heavy rainfall. High near 75. Northeast wind 7 to 10 mph. Chance of precipitation is 90%.
Saturday Night
Showers, mainly before 11pm. Low around 64. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Sunday
A chance of showers after 8am. Mostly cloudy, with a high near 82. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 50%.
Sunday Night
A chance of showers before 11pm. Mostly cloudy, with a low around 66. Light south wind. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 83. West wind 5 to 9 mph.
Monday Night
Mostly clear, with a low around 61. West wind around 6 mph.
Tuesday
Sunny, with a high near 82. West wind 6 to 9 mph.
Tuesday Night
Mostly clear, with a low around 61. West wind 3 to 5 mph.
Wednesday
Sunny, with a high near 84. Southwest wind 5 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Somerville MA
 42.39°N 71.09°W (Elev. 46 ft)
Last Update:
2:31 am EDT Aug 20, 2026
Forecast Valid:
3am EDT Aug 20, 2026-6pm EDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation