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

72°F

22°C

Humidity 53%
Wind Speed E 7 G 17 mph
Barometer 30.15 in (1021.1 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 2 Sep 12:56 pm EDT
Extended Forecast for

South Dennis MA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 71. East wind around 9 mph.

    High: 71 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 62. East wind around 6 mph.

    Low: 62 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers and thunderstorms likely before 11am, then a chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 77. South wind 10 to 13 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers
    Likely and
    Patchy Fog
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 65. Southwest wind 3 to 6 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 78. Northwest wind 5 to 8 mph.

    High: 78 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. Calm wind becoming northwest 5 to 7 mph after midnight.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 72. North wind 10 to 13 mph.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59. North wind around 10 mph.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 71. North wind 13 to 15 mph.

    High: 71 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 71. East wind around 9 mph.
Tonight
Mostly cloudy, with a low around 62. East wind around 6 mph.
Thursday
Showers and thunderstorms likely before 11am, then a chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 77. South wind 10 to 13 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 65. Southwest wind 3 to 6 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 78. Northwest wind 5 to 8 mph.
Friday Night
Mostly clear, with a low around 61. Calm wind becoming northwest 5 to 7 mph after midnight.
Saturday
Mostly sunny, with a high near 72. North wind 10 to 13 mph.
Saturday Night
Partly cloudy, with a low around 59. North wind around 10 mph.
Sunday
Mostly sunny, with a high near 71. North wind 13 to 15 mph.
Sunday Night
Mostly clear, with a low around 60. Northwest wind 3 to 5 mph.
Labor Day
Sunny, with a high near 73. Northwest wind around 7 mph.
Monday Night
Partly cloudy, with a low around 61. Southwest wind around 5 mph.
Tuesday
Mostly sunny, with a high near 76. Southwest wind 6 to 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
7:41 am EDT Sep 2, 2026
Forecast Valid:
1pm EDT Sep 2, 2026-6pm EDT Sep 8, 2026
 
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