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

50°F

10°C

Humidity 89%
Wind Speed Calm
Barometer 30.03 in (1017.0 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 17 Apr 8:54 pm EDT
Extended Forecast for

Somerville MA

  • Tonight

    Tonight: Areas of fog after 2am. Otherwise, increasing clouds, with a low around 49. Light north wind.

    Low: 49 °F

    Partly Cloudy
    then Areas
    Fog

  • Saturday

    Saturday: Areas of fog before 10am. Otherwise, cloudy, with a high near 51. East wind 6 to 10 mph.

    High: 51 °F

    Areas Fog
    then Cloudy

  • Saturday Night

    Saturday Night: A chance of showers between 11pm and 3am, then a slight chance of rain after 3am. Patchy fog after 11pm. Otherwise, cloudy, with a low around 45. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 45 °F

    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Rain before 4pm, then rain and snow likely between 4pm and 5pm, then rain after 5pm. Some thunder is also possible. Patchy fog before 9am, then patchy fog after 10am. High near 56. South wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 56 °F

    Showers
    Likely and
    Patchy Fog
    then
    Rain/Snow and
    Patchy Fog

  • Sunday Night

    Sunday Night: Rain, mainly before 8pm. Low around 36. West wind 6 to 8 mph. Chance of precipitation is 80%.

    Low: 36 °F

    Rain then
    Mostly Clear

  • Monday

    Monday: A slight chance of rain after 3pm. Mostly sunny, with a high near 46. West wind 6 to 9 mph. Chance of precipitation is 20%.

    High: 46 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33. North wind around 6 mph.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 52. North wind 5 to 7 mph becoming southeast in the afternoon.

    High: 52 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40. Southwest wind around 7 mph.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Tonight
Areas of fog after 2am. Otherwise, increasing clouds, with a low around 49. Light north wind.
Saturday
Areas of fog before 10am. Otherwise, cloudy, with a high near 51. East wind 6 to 10 mph.
Saturday Night
A chance of showers between 11pm and 3am, then a slight chance of rain after 3am. Patchy fog after 11pm. Otherwise, cloudy, with a low around 45. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Sunday
Rain before 4pm, then rain and snow likely between 4pm and 5pm, then rain after 5pm. Some thunder is also possible. Patchy fog before 9am, then patchy fog after 10am. High near 56. South wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.
Sunday Night
Rain, mainly before 8pm. Low around 36. West wind 6 to 8 mph. Chance of precipitation is 80%.
Monday
A slight chance of rain after 3pm. Mostly sunny, with a high near 46. West wind 6 to 9 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 33. North wind around 6 mph.
Tuesday
Sunny, with a high near 52. North wind 5 to 7 mph becoming southeast in the afternoon.
Tuesday Night
Partly cloudy, with a low around 40. Southwest wind around 7 mph.
Wednesday
Partly sunny, with a high near 61. Southwest wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 41. Northwest wind around 6 mph.
Thursday
Mostly sunny, with a high near 61. Northwest wind 5 to 8 mph.
Thursday Night
Partly cloudy, with a low around 44. Northwest wind around 6 mph.
Friday
Mostly sunny, with a high near 63. Northwest wind 5 to 8 mph becoming north in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Somerville MA
 42.39°N 71.09°W (Elev. 46 ft)
Last Update:
7:53 pm EDT Apr 17, 2026
Forecast Valid:
9pm EDT Apr 17, 2026-6pm EDT Apr 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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