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.

Mostly Cloudy

27°F

-3°C

Humidity 51%
Wind Speed W 16 G 26 mph
Barometer 29.42 in (996.4 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 16 Jan 4:56 am EST
Extended Forecast for

South Yarmouth MA

  • Today

    Today: Sunny, with a high near 34. West wind 10 to 17 mph, with gusts as high as 34 mph.

    High: 34 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 27. West wind 3 to 6 mph.

    Low: 27 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A chance of rain, mainly after 1pm. Cloudy, with a high near 44. Light southwest wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 40%.

    High: 44 °F

    Chance Rain

  • Saturday Night

    Saturday Night: A slight chance of rain before 8pm, then a slight chance of snow after 5am. Mostly cloudy, with a low around 30. West wind 3 to 6 mph. Chance of precipitation is 20%.

    Low: 30 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: A chance of snow before 10am, then rain likely between 10am and 4pm, then snow likely after 4pm. Cloudy, with a high near 39. Southwest wind 3 to 8 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 39 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Sunday Night

    Sunday Night: Snow, mainly before midnight. Low around 23. West wind 3 to 6 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 23 °F

    Snow then
    Chance Snow

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 35. Southwest wind 6 to 13 mph, with gusts as high as 29 mph.

    High: 35 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 18. West wind around 14 mph, with gusts as high as 31 mph.

    Low: 18 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 25. West wind 13 to 16 mph, with gusts as high as 30 mph.

    High: 25 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 34. West wind 10 to 17 mph, with gusts as high as 34 mph.
Tonight
Increasing clouds, with a low around 27. West wind 3 to 6 mph.
Saturday
A chance of rain, mainly after 1pm. Cloudy, with a high near 44. Light southwest wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 40%.
Saturday Night
A slight chance of rain before 8pm, then a slight chance of snow after 5am. Mostly cloudy, with a low around 30. West wind 3 to 6 mph. Chance of precipitation is 20%.
Sunday
A chance of snow before 10am, then rain likely between 10am and 4pm, then snow likely after 4pm. Cloudy, with a high near 39. Southwest wind 3 to 8 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Sunday Night
Snow, mainly before midnight. Low around 23. West wind 3 to 6 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
M.L.King Day
Mostly sunny, with a high near 35. Southwest wind 6 to 13 mph, with gusts as high as 29 mph.
Monday Night
Partly cloudy, with a low around 18. West wind around 14 mph, with gusts as high as 31 mph.
Tuesday
Sunny, with a high near 25. West wind 13 to 16 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 13. West wind around 10 mph, with gusts as high as 24 mph.
Wednesday
Mostly sunny, with a high near 30. West wind 8 to 10 mph, with gusts as high as 24 mph.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 21. West wind around 7 mph. Chance of precipitation is 30%.
Thursday
A chance of snow showers. Partly sunny, with a high near 36. West wind 8 to 10 mph, with gusts as high as 23 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:
2:38 am EST Jan 16, 2026
Forecast Valid:
5am EST Jan 16, 2026-6pm EST Jan 22, 2026
 
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Additional Resources

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Chance of Precipitation