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

Tracking Atmospheric River for the West Coast; Space Weather Storming Continues

An atmospheric river will bring threats of gusty to high winds and heavy rainfall to California mainly Thursday into Saturday which may bring areas of flooding and wind damage. Heavy snow will be possible over the Sierra Nevada mountains Thursday into Friday associated with the atmospheric river. Minor to severe geomagnetic storming (space weather) is expected to continue into early Thursday. Read More >

Current conditions at

Boston, Logan International Airport (KBOS)

Lat: 42.36°NLon: 71.01°WElev: 20ft.

Overcast

44°F

7°C

Humidity 49%
Wind Speed SW 13 mph
Barometer 29.69 in (1005.3 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 12 Nov 6:54 pm EST
Extended Forecast for

Winthrop MA

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. West wind around 10 mph.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of rain after 3pm. Mostly cloudy, with a high near 49. Northwest wind 10 to 14 mph. Chance of precipitation is 20%.

    High: 49 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 36. Northwest wind around 10 mph, with gusts as high as 21 mph.

    Low: 36 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 45. Northwest wind 10 to 13 mph.

    High: 45 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 33. Northwest wind around 10 mph.

    Low: 33 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 44. Northwest wind around 11 mph.

    High: 44 °F

    Sunny

  • Saturday Night

    Saturday Night: Rain likely, mainly after 2am. Mostly cloudy, with a low around 37. South wind around 8 mph. Chance of precipitation is 70%.

    Low: 37 °F

    Chance Rain
    then Rain
    Likely

  • Sunday

    Sunday: Rain likely, mainly before 2pm. Mostly cloudy, with a high near 52. Southwest wind 9 to 14 mph becoming west in the afternoon. Chance of precipitation is 70%.

    High: 52 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A chance of rain before 1am. Partly cloudy, with a low around 37. West wind around 14 mph. Chance of precipitation is 40%.

    Low: 37 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 40. West wind around 10 mph.
Thursday
A slight chance of rain after 3pm. Mostly cloudy, with a high near 49. Northwest wind 10 to 14 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 36. Northwest wind around 10 mph, with gusts as high as 21 mph.
Friday
Mostly sunny, with a high near 45. Northwest wind 10 to 13 mph.
Friday Night
Mostly clear, with a low around 33. Northwest wind around 10 mph.
Saturday
Sunny, with a high near 44. Northwest wind around 11 mph.
Saturday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 37. South wind around 8 mph. Chance of precipitation is 70%.
Sunday
Rain likely, mainly before 2pm. Mostly cloudy, with a high near 52. Southwest wind 9 to 14 mph becoming west in the afternoon. Chance of precipitation is 70%.
Sunday Night
A chance of rain before 1am. Partly cloudy, with a low around 37. West wind around 14 mph. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 44. West wind 14 to 17 mph, with gusts as high as 28 mph.
Monday Night
Mostly clear, with a low around 34. West wind 10 to 14 mph.
Tuesday
Mostly sunny, with a high near 44. West wind 10 to 13 mph.
Tuesday Night
Partly cloudy, with a low around 35. West wind around 8 mph.
Wednesday
Mostly sunny, with a high near 47. West wind 7 to 9 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winthrop MA
 42.37°N 70.98°W (Elev. 3 ft)
Last Update:
6:56 pm EST Nov 12, 2025
Forecast Valid:
7pm EST Nov 12, 2025-6pm EST Nov 19, 2025
 
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