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

23°F

-5°C

Humidity 60%
Wind Speed W 10 mph
Barometer 29.89 in (1012.3 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 3 Jan 8:56 am EST
Extended Forecast for

South Yarmouth MA

  • Today

    Today: Increasing clouds, with a high near 30. West wind around 7 mph.

    High: 30 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A chance of snow, mainly after 4am. Cloudy, with a low around 23. Light west wind. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 23 °F

    Cloudy then
    Chance Snow

  • Sunday

    Sunday: A chance of snow, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 31. Northwest wind 3 to 8 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 31 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Cloudy, then gradually becoming partly cloudy, with a low around 15. Northwest wind 6 to 9 mph, with gusts as high as 21 mph.

    Low: 15 °F

    Decreasing
    Clouds

  • Monday

    Monday: Partly sunny, with a high near 29. Northwest wind 5 to 8 mph becoming light and variable in the afternoon.

    High: 29 °F

    Partly Sunny

  • Monday Night

    Monday Night: A slight chance of snow after 8pm. Cloudy, with a low around 20. Calm wind. Chance of precipitation is 20%.

    Low: 20 °F

    Slight Chance
    Snow

  • Tuesday

    Tuesday: Cloudy, with a high near 40. Southeast wind 3 to 6 mph.

    High: 40 °F

    Cloudy

  • Tuesday Night

    Tuesday Night: A chance of rain after 8pm. Cloudy, with a low around 33. Light southeast wind. Chance of precipitation is 40%.

    Low: 33 °F

    Chance Rain

  • Wednesday

    Wednesday: A chance of rain before 3pm. Mostly cloudy, with a high near 43. South wind 5 to 8 mph becoming west in the afternoon. Chance of precipitation is 40%.

    High: 43 °F

    Chance Rain

Detailed Forecast

Today
Increasing clouds, with a high near 30. West wind around 7 mph.
Tonight
A chance of snow, mainly after 4am. Cloudy, with a low around 23. Light west wind. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday
A chance of snow, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 31. Northwest wind 3 to 8 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday Night
Cloudy, then gradually becoming partly cloudy, with a low around 15. Northwest wind 6 to 9 mph, with gusts as high as 21 mph.
Monday
Partly sunny, with a high near 29. Northwest wind 5 to 8 mph becoming light and variable in the afternoon.
Monday Night
A slight chance of snow after 8pm. Cloudy, with a low around 20. Calm wind. Chance of precipitation is 20%.
Tuesday
Cloudy, with a high near 40. Southeast wind 3 to 6 mph.
Tuesday Night
A chance of rain after 8pm. Cloudy, with a low around 33. Light southeast wind. Chance of precipitation is 40%.
Wednesday
A chance of rain before 3pm. Mostly cloudy, with a high near 43. South wind 5 to 8 mph becoming west in the afternoon. Chance of precipitation is 40%.
Wednesday Night
Mostly cloudy, with a low around 32. West wind 3 to 5 mph.
Thursday
Mostly sunny, with a high near 42. Northwest wind 3 to 7 mph.
Thursday Night
Mostly cloudy, with a low around 32. Light southwest wind.
Friday
A chance of rain. Mostly cloudy, with a high near 46. South wind 3 to 8 mph. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Yarmouth MA
 41.67°N 70.2°W (Elev. 10 ft)
Last Update:
6:02 am EST Jan 3, 2026
Forecast Valid:
9am EST Jan 3, 2026-6pm EST Jan 9, 2026
 
Forecast Discussion
 
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Additional Resources

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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