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

70°F

21°C

Humidity 93%
Wind Speed SE 3 mph
Barometer 29.87 in (1011.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 19 Aug 5:54 am EDT
Extended Forecast for

Somerville MA

  • Today

    Today: Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 87. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 87 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 68. Southwest wind 3 to 5 mph.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers, mainly between 10am and 5pm. Partly sunny, with a high near 85. Light and variable wind becoming west around 6 mph in the morning. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 85 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers before 10pm. Cloudy during the early evening, then gradual clearing, with a low around 64. Light north wind. Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80. North wind 5 to 9 mph becoming east in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 63. Southeast wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers after 11am. Partly sunny, with a high near 77. East wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 77 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 64. Northeast wind 3 to 6 mph. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers. Mostly cloudy, with a high near 80. Southeast wind 5 to 7 mph. Chance of precipitation is 40%.

    High: 80 °F

    Chance
    Showers

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 87. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tonight
Mostly clear, with a low around 68. Southwest wind 3 to 5 mph.
Thursday
A chance of showers, mainly between 10am and 5pm. Partly sunny, with a high near 85. Light and variable wind becoming west around 6 mph in the morning. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A slight chance of showers before 10pm. Cloudy during the early evening, then gradual clearing, with a low around 64. Light north wind. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 80. North wind 5 to 9 mph becoming east in the afternoon.
Friday Night
Partly cloudy, with a low around 63. Southeast wind around 5 mph becoming calm in the evening.
Saturday
A chance of showers after 11am. Partly sunny, with a high near 77. East wind 5 to 10 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 64. Northeast wind 3 to 6 mph. Chance of precipitation is 40%.
Sunday
A chance of showers. Mostly cloudy, with a high near 80. Southeast wind 5 to 7 mph. Chance of precipitation is 40%.
Sunday Night
A chance of showers before 11pm. Mostly cloudy, with a low around 64. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 83. West wind 5 to 9 mph.
Monday Night
Mostly clear, with a low around 62. West wind around 6 mph.
Tuesday
Sunny, with a high near 82. West wind 5 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Somerville MA
 42.39°N 71.09°W (Elev. 46 ft)
Last Update:
2:58 am EDT Aug 19, 2026
Forecast Valid:
6am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation