Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Boston, Logan International Airport (KBOS)

Lat: 42.36°NLon: 71.01°WElev: 20ft.

Partly Cloudy

16°F

-9°C

Humidity 47%
Wind Speed W 10 mph
Barometer 30.24 in (1023.9 mb)
Dewpoint -1°F (-18°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 9 Dec 2:54 am EST
Extended Forecast for

3 Miles N Weymouth MA

  • Overnight

    Overnight: Mostly clear, with a low around 13. Calm wind.

    Low: 13 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 31. Calm wind.

    High: 31 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A chance of snow showers, mainly before 2am.  Mostly cloudy, with a temperature rising to around 33 by 3am. South wind 14 to 17 mph.  Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 26 °F

    Chance Snow
    Showers

  • Wednesday

    Wednesday: Rain, mainly after 5pm.  High near 48. Breezy, with a south wind 15 to 24 mph.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Partly Sunny
    then Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain before 10pm, then a chance of showers between 10pm and 4am.  Low around 33. Breezy, with a southwest wind 16 to 20 mph, with gusts as high as 33 mph.  Chance of precipitation is 80%.

    Low: 33 °F

    Breezy. Rain
    then Chance
    Showers

  • Thursday

    Thursday: A slight chance of rain and snow showers before 1pm, then a slight chance of snow showers after 4pm.  Mostly sunny, with a high near 37. Breezy, with a west wind 18 to 22 mph, with gusts as high as 34 mph.  Chance of precipitation is 20%.

    High: 37 °F

    Slight Chance
    Rain/Snow and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 25. Breezy, with a west wind 18 to 23 mph decreasing to 10 to 15 mph after midnight.

    Low: 25 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Friday

    Friday: Sunny, with a high near 35. West wind 10 to 14 mph, with gusts as high as 29 mph.

    High: 35 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25. Southwest wind 6 to 9 mph.

    Low: 25 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 13. Calm wind.
Tuesday
Increasing clouds, with a high near 31. Calm wind.
Tuesday Night
A chance of snow showers, mainly before 2am. Mostly cloudy, with a temperature rising to around 33 by 3am. South wind 14 to 17 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Wednesday
Rain, mainly after 5pm. High near 48. Breezy, with a south wind 15 to 24 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain before 10pm, then a chance of showers between 10pm and 4am. Low around 33. Breezy, with a southwest wind 16 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 80%.
Thursday
A slight chance of rain and snow showers before 1pm, then a slight chance of snow showers after 4pm. Mostly sunny, with a high near 37. Breezy, with a west wind 18 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 25. Breezy, with a west wind 18 to 23 mph decreasing to 10 to 15 mph after midnight.
Friday
Sunny, with a high near 35. West wind 10 to 14 mph, with gusts as high as 29 mph.
Friday Night
Partly cloudy, with a low around 25. Southwest wind 6 to 9 mph.
Saturday
A chance of snow showers between 9am and noon. Partly sunny, with a high near 39. Southwest wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. West wind around 10 mph. Chance of precipitation is 40%.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 33. Northwest wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Sunday Night
Partly cloudy, with a low around 17. Northwest wind around 10 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 28. Northwest wind 9 to 11 mph, with gusts as high as 22 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Weymouth MA
 42.24°N 70.95°W (Elev. 3 ft)
3:39 am EST Dec 9, 2025
3am EST Dec 9, 2025-6pm EST Dec 15, 2025
 
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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