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

25°F

-4°C

Humidity 92%
Wind Speed Calm
Barometer 30.30 in (1026.2 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 8 Jan 10:56 pm EST
Extended Forecast for

South Dennis MA

  • Tonight

    Tonight: Patchy freezing fog after 1am. Partly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Patchy
    Freezing Fog

  • Friday

    Friday: Patchy freezing fog before 8am. Partly sunny, with a high near 47. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 47 °F

    Patchy
    Freezing Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: Rain likely, mainly before 1am. Patchy fog. Otherwise, cloudy, with a low around 37. South wind 7 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 37 °F

    Rain Likely
    and Patchy
    Fog

  • Saturday

    Saturday: Rain likely, mainly after 3pm. Cloudy, with a high near 45. Northwest wind around 6 mph becoming light and variable in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 45 °F

    Slight Chance
    Rain then
    Rain Likely

  • Saturday Night

    Saturday Night: Rain. Low around 36. East wind 3 to 6 mph. Chance of precipitation is 100%.

    Low: 36 °F

    Rain

  • Sunday

    Sunday: Rain, mainly before 4pm. High near 43. Northwest wind 5 to 8 mph. Chance of precipitation is 80%.

    High: 43 °F

    Rain

  • Sunday Night

    Sunday Night: A chance of rain before 2am. Mostly cloudy, with a low around 27. West wind 7 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.

    Low: 27 °F

    Chance Rain

  • Monday

    Monday: Sunny, with a high near 38. West wind 10 to 14 mph, with gusts as high as 26 mph.

    High: 38 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29. West wind around 7 mph.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy freezing fog after 1am. Partly cloudy, with a low around 29. Calm wind.
Friday
Patchy freezing fog before 8am. Partly sunny, with a high near 47. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Rain likely, mainly before 1am. Patchy fog. Otherwise, cloudy, with a low around 37. South wind 7 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain likely, mainly after 3pm. Cloudy, with a high near 45. Northwest wind around 6 mph becoming light and variable in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Rain. Low around 36. East wind 3 to 6 mph. Chance of precipitation is 100%.
Sunday
Rain, mainly before 4pm. High near 43. Northwest wind 5 to 8 mph. Chance of precipitation is 80%.
Sunday Night
A chance of rain before 2am. Mostly cloudy, with a low around 27. West wind 7 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.
Monday
Sunny, with a high near 38. West wind 10 to 14 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 29. West wind around 7 mph.
Tuesday
Mostly sunny, with a high near 41. Southwest wind 8 to 11 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 33. Southwest wind around 6 mph.
Wednesday
Mostly cloudy, with a high near 43. Southwest wind 6 to 10 mph.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 32. Southwest wind 3 to 5 mph. Chance of precipitation is 40%.
Thursday
A chance of rain. Partly sunny, with a high near 40. West wind 6 to 9 mph. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
1:10 pm EST Jan 8, 2026
Forecast Valid:
11pm EST Jan 8, 2026-6pm EST Jan 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation