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

59°F

15°C

Humidity 83%
Wind Speed N 8 mph
Barometer 29.70 in (1005.7 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 12 Oct 2:56 pm EDT
Extended Forecast for

South Dennis MA

  • Tonight

    Tonight: Increasing clouds, with a low around 52. Calm wind becoming northeast 5 to 8 mph after midnight.

    Low: 52 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A slight chance of showers after 3pm. Cloudy, with a high near 67. East wind 9 to 11 mph becoming southeast in the afternoon. Chance of precipitation is 20%.

    High: 67 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly between 8pm and 1am. Cloudy, then gradually becoming partly cloudy, with a low around 59. South wind 8 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 59 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 72. West wind around 11 mph, with gusts as high as 22 mph.

    High: 72 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. Northwest wind 5 to 8 mph.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 60. North wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. Light and variable wind.

    Low: 48 °F

    Partly Cloudy

  • Friday

    Friday: Showers, mainly after 11am. High near 67. South wind 7 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 67 °F

    Showers

  • Friday Night

    Friday Night: Showers, mainly before midnight. Low around 45. West wind 15 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 80%.

    Low: 45 °F

    Showers then
    Chance
    Showers

Detailed Forecast

Tonight
Increasing clouds, with a low around 52. Calm wind becoming northeast 5 to 8 mph after midnight.
Tuesday
A slight chance of showers after 3pm. Cloudy, with a high near 67. East wind 9 to 11 mph becoming southeast in the afternoon. Chance of precipitation is 20%.
Tuesday Night
A chance of showers, mainly between 8pm and 1am. Cloudy, then gradually becoming partly cloudy, with a low around 59. South wind 8 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 72. West wind around 11 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 51. Northwest wind 5 to 8 mph.
Thursday
Sunny, with a high near 60. North wind 10 to 14 mph, with gusts as high as 24 mph.
Thursday Night
Partly cloudy, with a low around 48. Light and variable wind.
Friday
Showers, mainly after 11am. High near 67. South wind 7 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Friday Night
Showers, mainly before midnight. Low around 45. West wind 15 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 80%.
Saturday
Mostly sunny, with a high near 56. Breezy, with a northwest wind 20 to 22 mph, with gusts as high as 37 mph.
Saturday Night
Partly cloudy, with a low around 40. West wind 14 to 17 mph, with gusts as high as 31 mph.
Sunday
Sunny, with a high near 56. Northwest wind 11 to 15 mph, with gusts as high as 26 mph.
Sunday Night
Partly cloudy, with a low around 45. Southwest wind around 6 mph.
Monday
Mostly sunny, with a high near 61. Southwest wind 7 to 14 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
2:04 pm EDT Oct 12, 2026
Forecast Valid:
3pm EDT Oct 12, 2026-6pm EDT Oct 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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