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

70°F

21°C

Humidity 68%
Wind Speed SW 10 mph
Barometer 30.29 in (1025.7 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 16 Sep 4:56 pm EDT
Extended Forecast for

South Dennis MA

  • Tonight

    Tonight: Mostly clear, with a low around 61. Southwest wind 6 to 8 mph.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 74. South wind 6 to 10 mph.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers, mainly after 2am. Mostly cloudy, with a low around 63. South wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 73. West wind 8 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 73 °F

    Chance
    Showers then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 55. North wind 5 to 11 mph, with gusts as high as 21 mph.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 66. Northeast wind 6 to 10 mph.

    High: 66 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers likely, mainly after 5pm. Mostly cloudy, with a high near 69. South wind 6 to 8 mph. Chance of precipitation is 60%.

    High: 69 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely, mainly before 10pm. Mostly cloudy, with a low around 56. South wind around 8 mph becoming north after midnight. Chance of precipitation is 60%.

    Low: 56 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 61. Southwest wind 6 to 8 mph.
Thursday
Mostly sunny, with a high near 74. South wind 6 to 10 mph.
Thursday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 63. South wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 73. West wind 8 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Mostly clear, with a low around 55. North wind 5 to 11 mph, with gusts as high as 21 mph.
Saturday
Mostly sunny, with a high near 66. Northeast wind 6 to 10 mph.
Saturday Night
Mostly cloudy, with a low around 55. Calm wind.
Sunday
Showers likely, mainly after 5pm. Mostly cloudy, with a high near 69. South wind 6 to 8 mph. Chance of precipitation is 60%.
Sunday Night
Showers likely, mainly before 10pm. Mostly cloudy, with a low around 56. South wind around 8 mph becoming north after midnight. Chance of precipitation is 60%.
Monday
A chance of showers. Partly sunny, with a high near 68. Northeast wind around 13 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 55. Northeast wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Tuesday
A chance of showers. Partly sunny, with a high near 68. Northeast wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 55. Northeast wind 10 to 13 mph.
Wednesday
Partly sunny, with a high near 68. East wind around 15 mph, with gusts as high as 26 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:
2:29 pm EDT Sep 16, 2026
Forecast Valid:
5pm EDT Sep 16, 2026-6pm EDT Sep 23, 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