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.

A Few Clouds

83°F

28°C

Humidity 38%
Wind Speed SW 9 G 17 mph
Barometer 30.07 in (1018.4 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 4 Aug 7:54 pm EDT
Extended Forecast for

Somerville MA

  • Tonight

    Tonight: Partly cloudy, with a low around 64. Southwest wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 87. Calm wind becoming south around 6 mph in the afternoon.

    High: 87 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 70. Southwest wind 3 to 5 mph.

    Low: 70 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny and hot, with a high near 91. Heat index values as high as 97. Southwest wind 5 to 7 mph. Chance of precipitation is 30%.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 73. Southwest wind around 6 mph. Chance of precipitation is 30%.

    Low: 73 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: A chance of showers and thunderstorms, mainly after 3pm. Sunny and hot, with a high near 92. West wind 5 to 7 mph. Chance of precipitation is 30%.

    High: 92 °F

    Sunny then
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 10pm. Partly cloudy, with a low around 72. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 90. Southwest wind 5 to 9 mph. Chance of precipitation is 30%.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. Southwest wind around 6 mph. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 64. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 87. Calm wind becoming south around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 70. Southwest wind 3 to 5 mph.
Thursday
A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny and hot, with a high near 91. Heat index values as high as 97. Southwest wind 5 to 7 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 73. Southwest wind around 6 mph. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms, mainly after 3pm. Sunny and hot, with a high near 92. West wind 5 to 7 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers before 10pm. Partly cloudy, with a low around 72. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 90. Southwest wind 5 to 9 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. Southwest wind around 6 mph. Chance of precipitation is 30%.
Sunday
Sunny and hot, with a high near 90. West wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 71. West wind around 6 mph.
Monday
Sunny and hot, with a high near 91. Southwest wind 5 to 11 mph.
Monday Night
Partly cloudy, with a low around 70. West wind 5 to 7 mph.
Tuesday
A chance of showers. Partly sunny, with a high near 87. West wind 7 to 11 mph. Chance of precipitation is 40%.
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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:
7:03 pm EDT Aug 4, 2026
Forecast Valid:
8pm EDT Aug 4, 2026-6pm EDT Aug 11, 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