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.

Fog/Mist

46°F

8°C

Humidity 86%
Wind Speed E 13 mph
Barometer 30.09 in (1018.7 mb)
Dewpoint 42°F (6°C)
Visibility 6.00 mi
Wind Chill40°F (4°C)
Last update 18 Apr 4:54 pm EDT
Extended Forecast for

Somerville MA

  • Tonight

    Tonight: Patchy drizzle after 4am. Patchy fog before 11pm, then patchy fog after midnight. Otherwise, cloudy, with a low around 46. East wind around 6 mph becoming calm in the evening.

    Low: 46 °F

    Patchy Fog
    then Patchy
    Drizzle and
    Patchy Fog

  • Sunday

    Sunday: Showers, mainly after 10am. Patchy fog before 10am. High near 56. South wind 5 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 56 °F

    Showers
    Likely and
    Patchy Fog
    then Showers

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 36. West wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Chance
    Showers then
    Mostly Clear

  • Monday

    Monday: A slight chance of showers after 3pm. Mostly sunny, with a high near 52. West wind 6 to 8 mph. Chance of precipitation is 20%.

    High: 52 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • 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 50. North wind around 6 mph becoming southeast in the afternoon.

    High: 50 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38. Southwest wind around 7 mph.

    Low: 38 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 56. Southwest wind 6 to 9 mph.

    High: 56 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41. West wind around 6 mph.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy drizzle after 4am. Patchy fog before 11pm, then patchy fog after midnight. Otherwise, cloudy, with a low around 46. East wind around 6 mph becoming calm in the evening.
Sunday
Showers, mainly after 10am. Patchy fog before 10am. High near 56. South wind 5 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 36. West wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
A slight chance of showers after 3pm. Mostly sunny, with a high near 52. West wind 6 to 8 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 50. North wind around 6 mph becoming southeast in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 38. Southwest wind around 7 mph.
Wednesday
Mostly cloudy, with a high near 56. Southwest wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 41. West wind around 6 mph.
Thursday
Mostly sunny, with a high near 63. Northwest wind 6 to 8 mph.
Thursday Night
Partly cloudy, with a low around 44. North wind around 6 mph.
Friday
Mostly sunny, with a high near 62. Northwest wind 5 to 8 mph becoming northeast in the afternoon.
Friday Night
Partly cloudy, with a low around 43. Southeast wind around 6 mph becoming light and variable in the evening.
Saturday
A chance of showers. Partly sunny, with a high near 60. North wind 5 to 8 mph becoming east in the afternoon. Chance of precipitation is 30%.
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:
3:32 pm EDT Apr 18, 2026
Forecast Valid:
5pm EDT Apr 18, 2026-6pm EDT Apr 25, 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