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

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fair

66°F

19°C

Humidity 96%
Wind Speed Calm
Barometer 29.91 in (1013.0 mb)
Dewpoint 65°F (18°C)
Visibility 9.00 mi
Last update 11 Jul 5:56 am EDT
Extended Forecast for

South Yarmouth MA

  • Today

    Today: Mostly cloudy, then becoming sunny during the afternoon, with a high near 80. Northeast wind 5 to 7 mph.

    High: 80 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 64. Light and variable wind.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79. North wind 6 to 8 mph.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. Light and variable wind.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80. Light southwest wind becoming south 8 to 13 mph in the morning.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 71. Southwest wind 11 to 13 mph.

    Low: 71 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83. Southwest wind 13 to 16 mph, with gusts as high as 29 mph.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 74. Southwest wind 15 to 17 mph, with gusts as high as 28 mph.

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86. West wind around 14 mph.

    High: 86 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, then becoming sunny during the afternoon, with a high near 80. Northeast wind 5 to 7 mph.
Tonight
Mostly clear, with a low around 64. Light and variable wind.
Sunday
Sunny, with a high near 79. North wind 6 to 8 mph.
Sunday Night
Mostly clear, with a low around 67. Light and variable wind.
Monday
Sunny, with a high near 80. Light southwest wind becoming south 8 to 13 mph in the morning.
Monday Night
Mostly clear, with a low around 71. Southwest wind 11 to 13 mph.
Tuesday
Sunny, with a high near 83. Southwest wind 13 to 16 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly clear, with a low around 74. Southwest wind 15 to 17 mph, with gusts as high as 28 mph.
Wednesday
Sunny, with a high near 86. West wind around 14 mph.
Wednesday Night
Partly cloudy, with a low around 73. Northwest wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 82. West wind 6 to 8 mph.
Thursday Night
Partly cloudy, with a low around 71. Southwest wind around 8 mph.
Friday
Sunny, with a high near 81. Northwest wind 7 to 9 mph becoming southwest in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Yarmouth MA
 41.65°N 70.2°W (Elev. 10 ft)
Last Update:
2:56 am EDT Jul 11, 2026
Forecast Valid:
6am EDT Jul 11, 2026-6pm EDT Jul 17, 2026
 
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