Autumn Temperatures for Eastern Third of the Country; Developing Offshore Coastal Storm

Cooler and less humid conditions for most of the eastern third of the nation as high pressure dominates the weather pattern. Otherwise, rather tranquil weather for most of the nation for the end of the weekend into the start of this week. We continue to monitor a developing coastal storm offshore of the Carolinas; Coastal flooding and beach erosion possible along portions of the Mid-Atlantic. Read More >

Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fair

51°F

11°C

Humidity 50%
Wind Speed N 12 mph
Barometer 30.56 in (1034.9 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 18 Oct 10:56 am EDT
Extended Forecast for

South Dennis MA

  • Today

    Today: Sunny, with a high near 56. Northeast wind 8 to 10 mph.

    High: 56 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 41. East wind around 6 mph.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 56. Northeast wind 8 to 11 mph.

    High: 56 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: A chance of showers, mainly between 10pm and 1am.  Cloudy, with a low around 50. North wind 10 to 14 mph, with gusts as high as 26 mph.  Chance of precipitation is 30%.

    Low: 50 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before 9am.  Mostly cloudy, with a high near 58. Northeast wind 16 to 18 mph, with gusts as high as 31 mph.  Chance of precipitation is 20%.

    High: 58 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 45. Northeast wind around 17 mph, with gusts as high as 32 mph.

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 57. Northeast wind around 18 mph, with gusts as high as 34 mph.

    High: 57 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A chance of showers after 10pm.  Mostly cloudy, with a low around 46. Northeast wind 13 to 15 mph, with gusts as high as 28 mph.  Chance of precipitation is 40%.

    Low: 46 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 5pm.  Partly sunny, with a high near 57. North wind around 16 mph, with gusts as high as 29 mph.  Chance of precipitation is 40%.

    High: 57 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 56. Northeast wind 8 to 10 mph.
Tonight
Mostly clear, with a low around 41. East wind around 6 mph.
Monday
Increasing clouds, with a high near 56. Northeast wind 8 to 11 mph.
Monday Night
A chance of showers, mainly between 10pm and 1am. Cloudy, with a low around 50. North wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Tuesday
A slight chance of showers before 9am. Mostly cloudy, with a high near 58. Northeast wind 16 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 45. Northeast wind around 17 mph, with gusts as high as 32 mph.
Wednesday
Mostly cloudy, with a high near 57. Northeast wind around 18 mph, with gusts as high as 34 mph.
Wednesday Night
A chance of showers after 10pm. Mostly cloudy, with a low around 46. Northeast wind 13 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
Thursday
A chance of showers before 5pm. Partly sunny, with a high near 57. North wind around 16 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 46. North wind 11 to 16 mph, with gusts as high as 31 mph.
Friday
Partly sunny, with a high near 56. Breezy, with a north wind 18 to 20 mph, with gusts as high as 36 mph.
Friday Night
Partly cloudy, with a low around 46. Northeast wind 14 to 17 mph, with gusts as high as 28 mph.
Saturday
Mostly sunny, with a high near 57. Northeast wind around 16 mph, with gusts as high as 26 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.71°N 70.16°W (Elev. 49 ft)
8:09 am EDT Oct 18, 2026
11am EDT Oct 18, 2026-6pm EDT Oct 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database