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.

Partly Cloudy

27°F

-3°C

Humidity 69%
Wind Speed S 7 mph
Barometer 30.18 in (1022.0 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 5 Dec 2:56 pm EST
Extended Forecast for

South Yarmouth MA

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of light rain after 2pm. Cloudy, with a high near 44. Calm wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 20%.

    High: 44 °F

    Cloudy then
    Slight Chance
    Light Rain

  • Saturday Night

    Saturday Night: A slight chance of light rain before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 30. South wind around 6 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 30 °F

    Slight Chance
    Light Rain
    then Mostly
    Clear

  • Sunday

    Sunday: Partly sunny, with a high near 42. Northwest wind 5 to 8 mph.

    High: 42 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A slight chance of rain between midnight and 4am, then a chance of freezing rain. Mostly cloudy, with a low around 25. Calm wind becoming west 5 to 7 mph after midnight. Chance of precipitation is 30%.

    Low: 25 °F

    Mostly Cloudy
    then Chance
    Rain/Freezing
    Rain

  • Monday

    Monday: A slight chance of snow and freezing rain before 7am, then a slight chance of snow between 7am and noon. Mostly sunny, with a high near 35. Northwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 35 °F

    Slight Chance
    Wintry Mix
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 21. North wind 6 to 10 mph, with gusts as high as 22 mph.

    Low: 21 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 40. Northwest wind 6 to 9 mph becoming southwest in the afternoon.

    High: 40 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow before 8pm, then a chance of rain between 8pm and 2am. Mostly cloudy, with a low around 30. West wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    Low: 30 °F

    Chance
    Rain/Snow
    then Chance
    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 27. Calm wind.
Saturday
A slight chance of light rain after 2pm. Cloudy, with a high near 44. Calm wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 20%.
Saturday Night
A slight chance of light rain before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 30. South wind around 6 mph becoming northwest after midnight. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 42. Northwest wind 5 to 8 mph.
Sunday Night
A slight chance of rain between midnight and 4am, then a chance of freezing rain. Mostly cloudy, with a low around 25. Calm wind becoming west 5 to 7 mph after midnight. Chance of precipitation is 30%.
Monday
A slight chance of snow and freezing rain before 7am, then a slight chance of snow between 7am and noon. Mostly sunny, with a high near 35. Northwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 21. North wind 6 to 10 mph, with gusts as high as 22 mph.
Tuesday
Partly sunny, with a high near 40. Northwest wind 6 to 9 mph becoming southwest in the afternoon.
Tuesday Night
A chance of snow before 8pm, then a chance of rain between 8pm and 2am. Mostly cloudy, with a low around 30. West wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Wednesday
A chance of rain after 4pm. Mostly cloudy, with a high near 49. Southwest wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 36. South wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Thursday
A chance of rain. Partly sunny, with a high near 47. West wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 29. West wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Friday
A chance of rain. Partly sunny, with a high near 42. West wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
South Yarmouth MA
 41.67°N 70.2°W (Elev. 10 ft)
Last Update:
2:40 pm EST Dec 5, 2025
Forecast Valid:
3pm EST Dec 5, 2025-6pm EST Dec 12, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation