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

51°F

11°C

Humidity 64%
Wind Speed SW 8 mph
Barometer 30.08 in (1018.6 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 13 May 5:56 am EDT
Extended Forecast for

South Dennis MA

  • Today

    Today: Partly sunny, with a high near 66. South wind 6 to 13 mph, with gusts as high as 25 mph.

    High: 66 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. South wind 7 to 9 mph, with gusts as high as 21 mph.

    Low: 54 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers, mainly after 10am. High near 65. Southeast wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 65 °F

    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Patchy fog before 9pm. Low around 50. East wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Showers and
    Patchy Fog

  • Friday

    Friday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 60. Light east wind becoming northeast 5 to 9 mph in the morning. Chance of precipitation is 70%.

    High: 60 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers, mainly before 7pm. Mostly cloudy, with a low around 51. West wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 51 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 72. Southwest wind 6 to 13 mph, with gusts as high as 23 mph.

    High: 72 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56. Southwest wind 7 to 9 mph, with gusts as high as 22 mph.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 76. Southwest wind 6 to 9 mph.

    High: 76 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 66. South wind 6 to 13 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, with a low around 54. South wind 7 to 9 mph, with gusts as high as 21 mph.
Thursday
Showers, mainly after 10am. High near 65. Southeast wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Patchy fog before 9pm. Low around 50. East wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 60. Light east wind becoming northeast 5 to 9 mph in the morning. Chance of precipitation is 70%.
Friday Night
A chance of showers, mainly before 7pm. Mostly cloudy, with a low around 51. West wind 3 to 5 mph. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 72. Southwest wind 6 to 13 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 56. Southwest wind 7 to 9 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 76. Southwest wind 6 to 9 mph.
Sunday Night
Partly cloudy, with a low around 55. Light west wind.
Monday
Mostly sunny, with a high near 70. Calm wind becoming east 5 to 7 mph in the morning.
Monday Night
Partly cloudy, with a low around 55. Light south wind.
Tuesday
Partly sunny, with a high near 74. Light south wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 21 mph.
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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:
5:28 am EDT May 13, 2026
Forecast Valid:
6am EDT May 13, 2026-6pm EDT May 19, 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