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

79°F

26°C

Humidity 69%
Wind Speed E 14 mph
Barometer 29.92 in (1013.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 1 Aug 3:54 pm EDT
Extended Forecast for

Cohasset MA

  • Tonight

    Tonight: Mostly cloudy, with a low around 67. Southwest wind around 8 mph.

    Low: 67 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 84. South wind 7 to 13 mph.

    High: 84 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 68. South wind 6 to 8 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Slight Chance
    T-storms then
    Showers
    Likely and
    Patchy Fog

  • Monday

    Monday: Showers, with thunderstorms also possible after 2pm. Patchy fog before 9am. High near 80. Southwest wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 80 °F

    Showers and
    Patchy Fog

  • Monday Night

    Monday Night: Showers and thunderstorms likely before 11pm, then a chance of showers. Mostly cloudy, with a low around 67. Southwest wind 6 to 8 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A slight chance of showers before 9am, then a slight chance of showers after 2pm. Mostly sunny, with a high near 80. West wind around 6 mph becoming east in the afternoon. Chance of precipitation is 20%.

    High: 80 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 66. Southwest wind 3 to 5 mph.

    Low: 66 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 70. Southwest wind around 6 mph.

    Low: 70 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 67. Southwest wind around 8 mph.
Sunday
Mostly cloudy, with a high near 84. South wind 7 to 13 mph.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 68. South wind 6 to 8 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Showers, with thunderstorms also possible after 2pm. Patchy fog before 9am. High near 80. Southwest wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers and thunderstorms likely before 11pm, then a chance of showers. Mostly cloudy, with a low around 67. Southwest wind 6 to 8 mph. Chance of precipitation is 60%.
Tuesday
A slight chance of showers before 9am, then a slight chance of showers after 2pm. Mostly sunny, with a high near 80. West wind around 6 mph becoming east in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 66. Southwest wind 3 to 5 mph.
Wednesday
Mostly sunny, with a high near 84. Calm wind becoming south 5 to 7 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 70. Southwest wind around 6 mph.
Thursday
A chance of showers after 2pm. Partly sunny, with a high near 86. Southwest wind 6 to 9 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Partly cloudy, with a low around 72. Southwest wind around 7 mph. Chance of precipitation is 30%.
Friday
A chance of showers. Mostly sunny, with a high near 86. Southwest wind around 7 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers. Partly cloudy, with a low around 70. Southwest wind around 6 mph. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly sunny, with a high near 85. Southwest wind 5 to 7 mph. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cohasset MA
 42.24°N 70.8°W (Elev. 46 ft)
Last Update:
2:41 pm EDT Aug 1, 2026
Forecast Valid:
4pm EDT Aug 1, 2026-6pm EDT Aug 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation