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

Hazardous Weather Conditions

Current conditions at

Plymouth, Plymouth Municipal Airport (KPYM)

Lat: 41.91°NLon: 70.73°WElev: 148ft.

A Few Clouds

91°F

33°C

Humidity 39%
Wind Speed W 13 G 23 mph
Barometer 29.83 in (1010.1 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 20 May 3:52 pm EDT
Extended Forecast for

Brant Rock MA

Heat Advisory May 20, 04:08pm until May 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory May 20, 04:08pm until May 20, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 78 °F

    Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers and thunderstorms, then a chance of showers after 10pm. Mostly cloudy, with a low around 51. West wind around 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers before 11am. Mostly cloudy, with a high near 56. North wind 7 to 10 mph becoming east in the afternoon. Chance of precipitation is 20%.

    High: 56 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming clear, with a low around 49. Light and variable wind becoming north 5 to 7 mph after midnight.

    Low: 49 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 57. Northeast wind 7 to 10 mph.

    High: 57 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49. South wind around 6 mph becoming calm after midnight.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 57. Calm wind becoming east 5 to 8 mph in the morning.

    High: 57 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 49. Southeast wind 7 to 11 mph. Chance of precipitation is 60%.

    Low: 49 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, mainly before 5pm. Mostly sunny, with a high near 78. West wind around 15 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A slight chance of showers and thunderstorms, then a chance of showers after 10pm. Mostly cloudy, with a low around 51. West wind around 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of showers before 11am. Mostly cloudy, with a high near 56. North wind 7 to 10 mph becoming east in the afternoon. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, then gradually becoming clear, with a low around 49. Light and variable wind becoming north 5 to 7 mph after midnight.
Friday
Sunny, with a high near 57. Northeast wind 7 to 10 mph.
Friday Night
Mostly cloudy, with a low around 49. South wind around 6 mph becoming calm after midnight.
Saturday
Mostly cloudy, with a high near 57. Calm wind becoming east 5 to 8 mph in the morning.
Saturday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 49. Southeast wind 7 to 11 mph. Chance of precipitation is 60%.
Sunday
Showers likely. Mostly cloudy, with a high near 56. East wind around 16 mph. Chance of precipitation is 70%.
Sunday Night
Showers likely, mainly between 11pm and midnight. Mostly cloudy, with a low around 50. East wind 6 to 10 mph. Chance of precipitation is 60%.
Memorial Day
A chance of showers. Cloudy, with a high near 62. East wind around 8 mph becoming north in the afternoon. Chance of precipitation is 50%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 52. Northwest wind around 7 mph. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 66. Northwest wind around 7 mph becoming southeast in the afternoon.
Tuesday Night
Partly cloudy, with a low around 54. South wind around 7 mph becoming west after midnight.
Wednesday
Sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Brant Rock MA
 42.08°N 70.63°W (Elev. 0 ft)
Last Update:
2:33 pm EDT May 20, 2026
Forecast Valid:
4pm EDT May 20, 2026-6pm EDT May 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation