National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Boston, Logan International Airport (KBOS)

Lat: 42.36°NLon: 71.01°WElev: 20ft.

Overcast

33°F

1°C

Humidity 85%
Wind Speed NE 3 mph
Barometer 29.99 in (1015.5 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 20 Feb 8:54 am EST
Extended Forecast for

Somerville MA

Winter Weather Advisory February 20, 10:00am until February 21, 07:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Today

    Today: A chance of rain and snow before 3pm, then snow likely between 3pm and 4pm, then snow and sleet after 4pm. High near 38. Calm wind becoming east 5 to 7 mph in the afternoon. Chance of precipitation is 90%. Little or no snow and sleet accumulation expected.

    High: 38 °F

    Cloudy then
    Wintry Mix

  • Tonight

    Tonight: Snow and sleet, becoming all snow after 9pm. Low around 29. East wind 5 to 7 mph becoming north after midnight. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 2 inches possible.

    Low: 29 °F

    Snow/Sleet
    then Snow

  • Saturday

    Saturday: A chance of snow. Mostly cloudy, with a high near 34. Northeast wind around 6 mph. Chance of precipitation is 40%. New snow accumulation of less than one inch possible.

    High: 34 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A chance of snow, mainly before 8pm. Partly cloudy, with a low around 24. Light north wind. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 24 °F

    Chance Snow

  • Sunday

    Sunday: A slight chance of snow after noon. Mostly cloudy, with a high near 37. Northeast wind 5 to 8 mph. Chance of precipitation is 20%.

    High: 37 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly after 4am. Cloudy, with a low around 29. Northeast wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 29 °F

    Snow Likely

  • Monday

    Monday: A chance of snow. Cloudy, with a high near 33. North wind 10 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.

    High: 33 °F

    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 23. Northwest wind around 6 mph.

    Low: 23 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36. Northwest wind around 7 mph.

    High: 36 °F

    Mostly Sunny

Detailed Forecast

Today
A chance of rain and snow before 3pm, then snow likely between 3pm and 4pm, then snow and sleet after 4pm. High near 38. Calm wind becoming east 5 to 7 mph in the afternoon. Chance of precipitation is 90%. Little or no snow and sleet accumulation expected.
Tonight
Snow and sleet, becoming all snow after 9pm. Low around 29. East wind 5 to 7 mph becoming north after midnight. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 2 inches possible.
Saturday
A chance of snow. Mostly cloudy, with a high near 34. Northeast wind around 6 mph. Chance of precipitation is 40%. New snow accumulation of less than one inch possible.
Saturday Night
A chance of snow, mainly before 8pm. Partly cloudy, with a low around 24. Light north wind. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday
A slight chance of snow after noon. Mostly cloudy, with a high near 37. Northeast wind 5 to 8 mph. Chance of precipitation is 20%.
Sunday Night
Snow likely, mainly after 4am. Cloudy, with a low around 29. Northeast wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Monday
A chance of snow. Cloudy, with a high near 33. North wind 10 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.
Monday Night
Mostly cloudy, with a low around 23. Northwest wind around 6 mph.
Tuesday
Mostly sunny, with a high near 36. Northwest wind around 7 mph.
Tuesday Night
Mostly cloudy, with a low around 17. West wind 3 to 5 mph.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 38. Light southwest wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 30%.
Wednesday Night
Rain and snow likely. Mostly cloudy, with a low around 33. Southwest wind around 7 mph. Chance of precipitation is 60%.
Thursday
A chance of rain. Mostly cloudy, with a high near 43. Southwest wind 7 to 9 mph. Chance of precipitation is 50%.
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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:
7:35 am EST Feb 20, 2026
Forecast Valid:
9am EST Feb 20, 2026-6pm EST Feb 26, 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