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.

Mostly Cloudy

68°F

20°C

Humidity 63%
Wind Speed S 9 mph
Barometer 30.02 in (1016.5 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 22 Sep 6:54 pm EDT
Extended Forecast for

Cohasset MA

  • Tonight

    Tonight: Partly cloudy, with a low around 57. Southwest wind around 8 mph.

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers after 3pm. Partly sunny, with a high near 79. Southwest wind around 8 mph. Chance of precipitation is 20%.

    High: 79 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 61. Southwest wind 5 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 61 °F

    Showers
    Likely and
    Patchy Fog

  • Wednesday

    Wednesday: Showers likely, mainly before 2pm. Patchy fog before 3pm. Otherwise, mostly cloudy, with a high near 70. East wind 6 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 70 °F

    Showers
    Likely and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 60. East wind around 7 mph. Chance of precipitation is 50%.

    Low: 60 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers likely. Mostly cloudy, with a high near 70. East wind around 8 mph. Chance of precipitation is 60%.

    High: 70 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely. Cloudy, with a low around 62. South wind around 7 mph. Chance of precipitation is 60%.

    Low: 62 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 75. Southwest wind around 8 mph. Chance of precipitation is 50%.

    High: 75 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers. Mostly cloudy, with a low around 60. Southwest wind around 6 mph. Chance of precipitation is 40%.

    Low: 60 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 57. Southwest wind around 8 mph.
Tuesday
A slight chance of showers after 3pm. Partly sunny, with a high near 79. Southwest wind around 8 mph. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 61. Southwest wind 5 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers likely, mainly before 2pm. Patchy fog before 3pm. Otherwise, mostly cloudy, with a high near 70. East wind 6 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 60. East wind around 7 mph. Chance of precipitation is 50%.
Thursday
Showers likely. Mostly cloudy, with a high near 70. East wind around 8 mph. Chance of precipitation is 60%.
Thursday Night
Showers likely. Cloudy, with a low around 62. South wind around 7 mph. Chance of precipitation is 60%.
Friday
A chance of showers. Mostly cloudy, with a high near 75. Southwest wind around 8 mph. Chance of precipitation is 50%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 60. Southwest wind around 6 mph. Chance of precipitation is 40%.
Saturday
A chance of showers. Partly sunny, with a high near 73. North wind 6 to 8 mph becoming east in the afternoon. Chance of precipitation is 40%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 60. Southwest wind around 7 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 75. Northwest wind around 8 mph.
Sunday Night
Partly cloudy, with a low around 57. West wind around 7 mph.
Monday
Mostly sunny, with a high near 71. North wind around 9 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Cohasset MA
 42.24°N 70.8°W (Elev. 46 ft)
Last Update:
6:05 pm EDT Sep 22, 2025
Forecast Valid:
7pm EDT Sep 22, 2025-6pm EDT Sep 29, 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