National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fair

72°F

22°C

Humidity 57%
Wind Speed N 13 G 22 mph
Barometer 29.94 in (1013.9 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 22 Aug 1:56 pm EDT
Extended Forecast for

South Dennis MA

High Surf Advisory August 22, 02:05pm until August 23, 08:00pm
Click here for hazard details and duration
High Surf Advisory
  •  
    High Surf Advisory August 22, 02:05pm until August 23, 08:00pm

    NOW until 8:00pm Sat

    High Surf Advisory

  • This Afternoon

    High: 75 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. Light and variable wind.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81. South wind 6 to 10 mph.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64. South wind 7 to 9 mph.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 80. South wind 8 to 13 mph.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: A chance of showers, mainly after 3am. Mostly cloudy, with a low around 64. South wind 7 to 9 mph. Chance of precipitation is 30%.

    Low: 64 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A chance of showers. Mostly cloudy, with a high near 79. South wind 7 to 9 mph. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers before 11pm. Partly cloudy, with a low around 62. South wind around 6 mph. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 75. North wind around 16 mph.
Tonight
Mostly clear, with a low around 60. Light and variable wind.
Saturday
Sunny, with a high near 81. South wind 6 to 10 mph.
Saturday Night
Mostly clear, with a low around 64. South wind 7 to 9 mph.
Sunday
Sunny, with a high near 80. South wind 8 to 13 mph.
Sunday Night
A chance of showers, mainly after 3am. Mostly cloudy, with a low around 64. South wind 7 to 9 mph. Chance of precipitation is 30%.
Monday
A chance of showers. Mostly cloudy, with a high near 79. South wind 7 to 9 mph. Chance of precipitation is 50%.
Monday Night
A chance of showers before 11pm. Partly cloudy, with a low around 62. South wind around 6 mph. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 80. West wind 7 to 10 mph.
Tuesday Night
Mostly clear, with a low around 59. West wind 6 to 8 mph.
Wednesday
Sunny, with a high near 77. Northwest wind around 8 mph.
Wednesday Night
Mostly clear, with a low around 58. Northwest wind around 6 mph.
Thursday
Sunny, with a high near 77. Northwest wind 6 to 8 mph becoming southwest in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.71°N 70.16°W (Elev. 49 ft)
Last Update:
6:26 am EDT Aug 22, 2025
Forecast Valid:
2pm EDT Aug 22, 2025-6pm EDT Aug 28, 2025
 
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