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.

Fair

70°F

21°C

Humidity 66%
Wind Speed Calm
Barometer 30.10 in (1019.2 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 18 Jul 11:54 pm EDT
Extended Forecast for

Somerville MA

  • Overnight

    Overnight: Clear, with a low around 63. Light northwest wind.

    Low: 63 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 84. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 70. Southwest wind around 9 mph. Chance of precipitation is 20%.

    Low: 70 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 85. South wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, mainly before 10pm. Partly cloudy, with a low around 64. Northwest wind around 6 mph. Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 79. Northwest wind around 9 mph.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 59. North wind 3 to 6 mph.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. Light and variable wind becoming north around 6 mph in the morning.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 61. Southeast wind around 6 mph becoming light and variable in the evening.

    Low: 61 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 63. Light northwest wind.
Saturday
Sunny, with a high near 84. Light and variable wind becoming south 5 to 10 mph in the morning.
Saturday Night
A slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 70. Southwest wind around 9 mph. Chance of precipitation is 20%.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 85. South wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and thunderstorms likely, mainly before 10pm. Partly cloudy, with a low around 64. Northwest wind around 6 mph. Chance of precipitation is 60%.
Monday
Sunny, with a high near 79. Northwest wind around 9 mph.
Monday Night
Mostly clear, with a low around 59. North wind 3 to 6 mph.
Tuesday
Sunny, with a high near 79. Light and variable wind becoming north around 6 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 61. Southeast wind around 6 mph becoming light and variable in the evening.
Wednesday
Mostly sunny, with a high near 83. Calm wind becoming south 5 to 9 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 69. Southwest wind 6 to 8 mph.
Thursday
Partly sunny, with a high near 87. Southwest wind 7 to 11 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 73. Southwest wind 6 to 9 mph. Chance of precipitation is 40%.
Friday
A chance of showers. Mostly sunny, with a high near 89. West wind 6 to 9 mph. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Somerville MA
 42.39°N 71.09°W (Elev. 46 ft)
Last Update:
10:57 pm EDT Jul 18, 2025
Forecast Valid:
12am EDT Jul 19, 2025-6pm EDT Jul 25, 2025
 
Forecast Discussion
 
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Additional Resources

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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