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

76°F

24°C

Humidity 60%
Wind Speed S 9 mph
Barometer 30.07 in (1018.3 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 21 Jun 4:56 pm EDT
Extended Forecast for

South Dennis MA

  • Tonight

    Tonight: Partly cloudy, with a low around 65. South wind 5 to 8 mph.

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly before noon. Partly sunny, with a high near 84. Southwest wind 14 to 18 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 66. Southwest wind 6 to 9 mph becoming north after midnight.

    Low: 66 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 81. Light and variable wind becoming southeast 5 to 7 mph in the morning.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. Southwest wind around 6 mph.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 90. West wind 6 to 8 mph.

    High: 90 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69. Southwest wind around 6 mph becoming northwest after midnight.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81. North wind 6 to 9 mph.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 62. Light east wind.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 65. South wind 5 to 8 mph.
Sunday
A chance of showers and thunderstorms, mainly before noon. Partly sunny, with a high near 84. Southwest wind 14 to 18 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Partly cloudy, with a low around 66. Southwest wind 6 to 9 mph becoming north after midnight.
Monday
Sunny, with a high near 81. Light and variable wind becoming southeast 5 to 7 mph in the morning.
Monday Night
Mostly clear, with a low around 67. Southwest wind around 6 mph.
Tuesday
Sunny and hot, with a high near 90. West wind 6 to 8 mph.
Tuesday Night
Mostly clear, with a low around 69. Southwest wind around 6 mph becoming northwest after midnight.
Wednesday
Sunny, with a high near 81. North wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 62. Light east wind.
Thursday
Partly sunny, with a high near 74. East wind 6 to 10 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 61. East wind around 6 mph. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 72. Southeast wind 7 to 10 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 61. Southeast wind around 7 mph. Chance of precipitation is 30%.
Saturday
A chance of showers. Partly sunny, with a high near 74. South wind 8 to 11 mph. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.71°N 70.16°W (Elev. 49 ft)
Last Update:
3:21 pm EDT Jun 21, 2025
Forecast Valid:
5pm EDT Jun 21, 2025-6pm EDT Jun 28, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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