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.

A Few Clouds

56°F

13°C

Humidity 84%
Wind Speed S 9 G 20 mph
Barometer 29.88 in (1012.0 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 11 Mar 3:56 pm EDT
Extended Forecast for

South Yarmouth MA

  • Tonight

    Tonight: A slight chance of showers after midnight. Patchy dense fog. Otherwise, cloudy, with a low around 41. South wind 8 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    Low: 41 °F

    Patchy Fog
    then Slight
    Chance
    Showers and
    Patchy Dense
    Fog

  • Thursday

    Thursday: A chance of showers, mainly after 9am. Patchy dense fog before noon. Otherwise, cloudy, with a high near 49. Southwest wind 11 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 49 °F

    Chance
    Showers and
    Patchy Dense
    Fog

  • Thursday Night

    Thursday Night: A chance of snow showers, mainly before 10pm. Cloudy during the early evening, then gradual clearing, with a low around 28. Northwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance Snow
    Showers then
    Partly Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 42. West wind 6 to 11 mph becoming southwest in the afternoon.

    High: 42 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 34. South wind 10 to 13 mph, with gusts as high as 26 mph.

    Low: 34 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 44. West wind 13 to 15 mph, with gusts as high as 26 mph.

    High: 44 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 29. West wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly cloudy, with a high near 43. North wind around 6 mph becoming southeast in the afternoon.

    High: 43 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of rain after 2am. Cloudy, with a low around 35. Southeast wind 9 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.

    Low: 35 °F

    Cloudy then
    Chance Rain

Detailed Forecast

Tonight
A slight chance of showers after midnight. Patchy dense fog. Otherwise, cloudy, with a low around 41. South wind 8 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Thursday
A chance of showers, mainly after 9am. Patchy dense fog before noon. Otherwise, cloudy, with a high near 49. Southwest wind 11 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of snow showers, mainly before 10pm. Cloudy during the early evening, then gradual clearing, with a low around 28. Northwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Friday
Increasing clouds, with a high near 42. West wind 6 to 11 mph becoming southwest in the afternoon.
Friday Night
Mostly cloudy, with a low around 34. South wind 10 to 13 mph, with gusts as high as 26 mph.
Saturday
Sunny, with a high near 44. West wind 13 to 15 mph, with gusts as high as 26 mph.
Saturday Night
Mostly clear, with a low around 29. West wind 8 to 11 mph, with gusts as high as 21 mph.
Sunday
Mostly cloudy, with a high near 43. North wind around 6 mph becoming southeast in the afternoon.
Sunday Night
A chance of rain after 2am. Cloudy, with a low around 35. Southeast wind 9 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
Monday
Rain, mainly after 7am. High near 51. Breezy, with a south wind around 21 mph, with gusts as high as 38 mph. Chance of precipitation is 90%.
Monday Night
Rain likely. Cloudy, with a low around 31. Breezy, with a south wind 14 to 20 mph becoming west after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 70%.
Tuesday
A chance of rain. Partly sunny, with a high near 40. West wind 11 to 13 mph. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 22. Northwest wind 9 to 11 mph.
Wednesday
Mostly sunny, with a high near 34. Northwest wind around 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
South Yarmouth MA
 41.65°N 70.2°W (Elev. 10 ft)
Last Update:
3:06 pm EDT Mar 11, 2026
Forecast Valid:
4pm EDT Mar 11, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation