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.

Mostly Cloudy

79°F

26°C

Humidity 85%
Wind Speed SW 7 mph
Barometer 30.06 in (1017.9 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 15 Jul 11:56 am EDT
Extended Forecast for

South Dennis MA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 81. Southwest wind 8 to 10 mph.

    High: 81 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 70. Southwest wind 6 to 8 mph.

    Low: 70 °F

    Patchy Fog

  • Wednesday

    Wednesday: Partly sunny, with a high near 83. Southwest wind 6 to 10 mph.

    High: 83 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 71. Southwest wind around 8 mph.

    Low: 71 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 84. Southwest wind 9 to 13 mph. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 72. Southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 72 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 86. West wind 7 to 10 mph.

    High: 86 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 68. North wind around 5 mph.

    Low: 68 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 79. Northeast wind around 7 mph.

    High: 79 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 81. Southwest wind 8 to 10 mph.
Tonight
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 70. Southwest wind 6 to 8 mph.
Wednesday
Partly sunny, with a high near 83. Southwest wind 6 to 10 mph.
Wednesday Night
Increasing clouds, with a low around 71. Southwest wind around 8 mph.
Thursday
A slight chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 84. Southwest wind 9 to 13 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 72. Southwest wind around 10 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 86. West wind 7 to 10 mph.
Friday Night
Mostly cloudy, with a low around 68. North wind around 5 mph.
Saturday
Sunny, with a high near 79. Northeast wind around 7 mph.
Saturday Night
Partly cloudy, with a low around 67. Light and variable wind.
Sunday
Partly sunny, with a high near 81. South wind 5 to 9 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 68. South wind around 7 mph. Chance of precipitation is 40%.
Monday
A chance of showers. Mostly sunny, with a high near 80. West wind 7 to 9 mph becoming south in the afternoon. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.68°N 70.13°W (Elev. 10 ft)
Last Update:
7:45 am EDT Jul 15, 2025
Forecast Valid:
12pm EDT Jul 15, 2025-6pm EDT Jul 21, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation