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

75°F

24°C

Humidity 94%
Wind Speed SW 9 mph
Barometer 30.04 in (1017.3 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 15 Jul 10:56 pm EDT
Extended Forecast for

South Yarmouth MA

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, cloudy, with a low around 70. Southwest wind 3 to 5 mph.

    Low: 70 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 84. Light southwest wind increasing to 5 to 9 mph in the morning.

    High: 84 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog between 11pm and 3am. Otherwise, increasing clouds, with a low around 74. Southwest wind around 7 mph.

    Low: 74 °F

    Patchy Fog

  • Thursday

    Thursday: A chance of showers and thunderstorms before 2pm, then a slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 84. Southwest wind 8 to 13 mph. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 3am. Mostly cloudy, with a low around 72. Southwest wind 8 to 10 mph. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 84. West wind 7 to 10 mph becoming north in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 66. North wind around 6 mph.

    Low: 66 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 80. Northeast wind 6 to 8 mph becoming east in the afternoon.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 67. South wind 3 to 5 mph.

    Low: 67 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, cloudy, with a low around 70. Southwest wind 3 to 5 mph.
Wednesday
Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 84. Light southwest wind increasing to 5 to 9 mph in the morning.
Wednesday Night
Patchy fog between 11pm and 3am. Otherwise, increasing clouds, with a low around 74. Southwest wind around 7 mph.
Thursday
A chance of showers and thunderstorms before 2pm, then a slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 84. Southwest wind 8 to 13 mph. Chance of precipitation is 30%.
Thursday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 3am. Mostly cloudy, with a low around 72. Southwest wind 8 to 10 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 84. West wind 7 to 10 mph becoming north in the afternoon.
Friday Night
Partly cloudy, with a low around 66. North wind around 6 mph.
Saturday
Sunny, with a high near 80. Northeast wind 6 to 8 mph becoming east in the afternoon.
Saturday Night
Mostly cloudy, with a low around 67. South wind 3 to 5 mph.
Sunday
A chance of showers after 1pm. Partly sunny, with a high near 81. South wind 6 to 11 mph. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 67. Southwest wind around 7 mph. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 81. North wind 7 to 9 mph.
Monday Night
Partly cloudy, with a low around 66. Southeast wind around 5 mph becoming light and variable.
Tuesday
Mostly sunny, with a high near 78. Northeast wind 6 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
South Yarmouth MA
 41.67°N 70.2°W (Elev. 10 ft)
Last Update:
3:27 pm EDT Jul 15, 2025
Forecast Valid:
11pm EDT Jul 15, 2025-6pm EDT Jul 22, 2025
 
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Additional Resources

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Chance of Precipitation