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.

Fair

72°F

22°C

Humidity 76%
Wind Speed Vrbl 6 mph
Barometer 30.02 in (1016.7 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 27 Jun 2:56 pm EDT
Extended Forecast for

South Yarmouth MA

  • Tonight

    Tonight: Mostly cloudy, with a low around 61. East wind around 5 mph becoming calm in the evening.

    Low: 61 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 73. Northeast wind 5 to 8 mph.

    High: 73 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: A slight chance of showers between 8pm and 11pm. Partly cloudy, with a low around 63. Calm wind. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 75. Calm wind becoming east around 6 mph in the afternoon.

    High: 75 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65. Southwest wind 3 to 5 mph.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Southwest wind 6 to 13 mph.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 9pm. Mostly cloudy, with a low around 69. Southwest wind around 11 mph. Chance of precipitation is 40%.

    Low: 69 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84. Southwest wind 13 to 15 mph.

    High: 84 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 72. Southwest wind 9 to 13 mph.

    Low: 72 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 61. East wind around 5 mph becoming calm in the evening.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 73. Northeast wind 5 to 8 mph.
Sunday Night
A slight chance of showers between 8pm and 11pm. Partly cloudy, with a low around 63. Calm wind. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 75. Calm wind becoming east around 6 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 65. Southwest wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 76. Southwest wind 6 to 13 mph.
Tuesday Night
A chance of showers after 9pm. Mostly cloudy, with a low around 69. Southwest wind around 11 mph. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 84. Southwest wind 13 to 15 mph.
Wednesday Night
Partly cloudy, with a low around 72. Southwest wind 9 to 13 mph.
Thursday
Mostly sunny, with a high near 86. Southwest wind 8 to 10 mph.
Thursday Night
Partly cloudy, with a low around 73. Southwest wind 5 to 8 mph becoming northwest after midnight.
Friday
Mostly sunny, with a high near 86. Northwest wind 6 to 8 mph becoming east in the afternoon.
Friday Night
A chance of showers. Partly cloudy, with a low around 71. Southeast wind 3 to 5 mph. Chance of precipitation is 30%.
Independence Day
Mostly sunny, with a high near 81. Northwest wind 5 to 8 mph becoming southeast in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Yarmouth MA
 41.65°N 70.2°W (Elev. 10 ft)
Last Update:
7:48 am EDT Jun 27, 2026
Forecast Valid:
3pm EDT Jun 27, 2026-6pm EDT Jul 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation