Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Boston, Logan International Airport (KBOS)

Lat: 42.36°NLon: 71.01°WElev: 20ft.

A Few Clouds

24°F

-4°C

Humidity 44%
Wind Speed NW 16 G 26 mph
Barometer 30.16 in (1021.3 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 8 Dec 6:54 am EST
Extended Forecast for

Chelsea MA

  • Today

    Today: Sunny, with a high near 26. Northwest wind 10 to 14 mph, with gusts as high as 28 mph.

    High: 26 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 12. Northwest wind 6 to 8 mph.

    Low: 12 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 32. West wind 5 to 7 mph becoming south in the afternoon.

    High: 32 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A chance of snow before 2am, then a chance of rain.  Mostly cloudy, with a low around 27. South wind around 7 mph.  Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 27 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: Rain likely, mainly after 2pm.  Mostly cloudy, with a high near 46. Southwest wind 7 to 10 mph, with gusts as high as 21 mph.  Chance of precipitation is 70%.

    High: 46 °F

    Chance Rain
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: Rain likely, mainly before 8pm.  Mostly cloudy, with a low around 33. Southwest wind around 9 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%.

    Low: 33 °F

    Rain Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 39. West wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 39 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 24. West wind 6 to 8 mph.

    Low: 24 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 35. West wind 7 to 10 mph.

    High: 35 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 26. Northwest wind 10 to 14 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a low around 12. Northwest wind 6 to 8 mph.
Tuesday
Increasing clouds, with a high near 32. West wind 5 to 7 mph becoming south in the afternoon.
Tuesday Night
A chance of snow before 2am, then a chance of rain. Mostly cloudy, with a low around 27. South wind around 7 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Wednesday
Rain likely, mainly after 2pm. Mostly cloudy, with a high near 46. Southwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Wednesday Night
Rain likely, mainly before 8pm. Mostly cloudy, with a low around 33. Southwest wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 39. West wind 9 to 11 mph, with gusts as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 24. West wind 6 to 8 mph.
Friday
Mostly sunny, with a high near 35. West wind 7 to 10 mph.
Friday Night
A chance of snow after midnight. Mostly cloudy, with a low around 23. West wind around 6 mph. Chance of precipitation is 30%.
Saturday
A chance of snow. Partly sunny, with a high near 34. West wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Saturday Night
A chance of snow. Partly cloudy, with a low around 19. West wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 30. West wind 10 to 13 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Chelsea MA
 42.4°N 71.03°W (Elev. 49 ft)
6:04 am EST Dec 8, 2025
7am EST Dec 8, 2025-6pm EST Dec 14, 2025
 
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Additional Resources

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