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

70°F

21°C

Humidity 59%
Wind Speed W 13 mph
Barometer 29.61 in (1002.6 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 19 Jun 8:56 pm EDT
Extended Forecast for

South Yarmouth MA

  • Tonight

    Tonight: Clear, with a low around 61. West wind 7 to 9 mph, with gusts as high as 24 mph.

    Low: 61 °F

    Clear

  • Saturday

    Saturday: Scattered showers after 2pm. Increasing clouds, with a high near 84. West wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    High: 84 °F

    Sunny then
    Scattered
    Showers

  • Saturday Night

    Saturday Night: Scattered showers, mainly before 7pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 60. West wind 3 to 6 mph. Chance of precipitation is 30%.

    Low: 60 °F

    Scattered
    Showers then
    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers before 2pm, then a slight chance of showers after 5pm. Sunny, with a high near 82. West wind 5 to 7 mph becoming south in the afternoon. Chance of precipitation is 20%.

    High: 82 °F

    Sunny then
    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 67. Light southwest wind.

    Low: 67 °F

    Partly Cloudy

  • Monday

    Monday: Showers likely, mainly after 3pm. Partly sunny, with a high near 83. Light south wind increasing to 6 to 11 mph in the morning. Chance of precipitation is 60%.

    High: 83 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers. Low around 68. South wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    Low: 68 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, mainly before 8am. Partly sunny, with a high near 81. Southwest wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 67. West wind 3 to 5 mph.

    Low: 67 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 61. West wind 7 to 9 mph, with gusts as high as 24 mph.
Saturday
Scattered showers after 2pm. Increasing clouds, with a high near 84. West wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Saturday Night
Scattered showers, mainly before 7pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 60. West wind 3 to 6 mph. Chance of precipitation is 30%.
Sunday
A slight chance of showers before 2pm, then a slight chance of showers after 5pm. Sunny, with a high near 82. West wind 5 to 7 mph becoming south in the afternoon. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 67. Light southwest wind.
Monday
Showers likely, mainly after 3pm. Partly sunny, with a high near 83. Light south wind increasing to 6 to 11 mph in the morning. Chance of precipitation is 60%.
Monday Night
Showers. Low around 68. South wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Tuesday
Showers likely, mainly before 8am. Partly sunny, with a high near 81. Southwest wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Tuesday Night
Partly cloudy, with a low around 67. West wind 3 to 5 mph.
Wednesday
Sunny, with a high near 81. Light and variable wind becoming west 5 to 7 mph in the morning.
Wednesday Night
Mostly clear, with a low around 68. South wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 81. Calm wind becoming south 5 to 8 mph in the morning.
Thursday Night
Partly cloudy, with a low around 68. South wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 81. South wind 3 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:
1:56 pm EDT Jun 19, 2026
Forecast Valid:
9pm EDT Jun 19, 2026-6pm EDT Jun 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation