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

63°F

17°C

Humidity 56%
Wind Speed NE 8 mph
Barometer 30.18 in (1022.0 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 19 Sep 2:56 pm EDT
Extended Forecast for

South Dennis MA

  • Tonight

    Tonight: Partly cloudy, with a low around 48. Northeast wind around 5 mph becoming light and variable in the evening.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers likely, mainly after 2pm. Increasing clouds, with a high near 64. Southeast wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Partly Sunny
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Showers. Patchy fog after 10pm. Low around 60. Southeast wind 6 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Showers and
    Patchy Fog

  • Monday

    Monday: A chance of showers before 8am. Patchy fog between 8am and 9am. Otherwise, mostly cloudy, with a high near 66. Northeast wind 13 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Chance
    Showers and
    Patchy Fog
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 55. Northeast wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 66. Northeast wind around 14 mph, with gusts as high as 24 mph.

    High: 66 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 55. Northeast wind 11 to 14 mph.

    Low: 55 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 66. Northeast wind around 18 mph.

    High: 66 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 55. Northeast wind 15 to 17 mph.

    Low: 55 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 48. Northeast wind around 5 mph becoming light and variable in the evening.
Sunday
Showers likely, mainly after 2pm. Increasing clouds, with a high near 64. Southeast wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Showers. Patchy fog after 10pm. Low around 60. Southeast wind 6 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A chance of showers before 8am. Patchy fog between 8am and 9am. Otherwise, mostly cloudy, with a high near 66. Northeast wind 13 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Mostly cloudy, with a low around 55. Northeast wind 8 to 10 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, with a high near 66. Northeast wind around 14 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 55. Northeast wind 11 to 14 mph.
Wednesday
Partly sunny, with a high near 66. Northeast wind around 18 mph.
Wednesday Night
Mostly cloudy, with a low around 55. Northeast wind 15 to 17 mph.
Thursday
A chance of showers after 1pm. Partly sunny, with a high near 66. Breezy, with a northeast wind around 21 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 55. Breezy, with a northeast wind around 22 mph. Chance of precipitation is 40%.
Friday
A chance of showers. Mostly cloudy, with a high near 67. Breezy, with a northeast wind around 23 mph. Chance of precipitation is 50%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 55. Breezy, with a northeast wind around 23 mph. Chance of precipitation is 50%.
Saturday
A chance of showers. Partly sunny, with a high near 67. Breezy, with a north wind 18 to 20 mph. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.71°N 70.19°W (Elev. 39 ft)
Last Update:
2:33 pm EDT Sep 19, 2026
Forecast Valid:
3pm EDT Sep 19, 2026-6pm EDT Sep 26, 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