Threat For Severe Thunderstorms For The Mid Atlantic And Northeast; Hurricane Lane Continues Westward Across the Central Pacific

Showers and thunderstorms will impact the Mid Atlantic and Northeast U.S. on Tuesday. Some of the storms could produce damaging winds, large hail, and heavy rainfall. Localized flooding will be possible. The major I-95 cities from Washington D.C. to New York could be impacted. Major Hurricane Lane will turn northwest and could impact the Hawaiian Islands late week and into the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Mostly Cloudy

68°F

20°C

Humidity 87%
Wind Speed NE 7 mph
Barometer 30.10 in (1019.2 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 21 Aug 6:56 am EDT
Extended Forecast for

South Dennis MA

  • Today

    Today: A slight chance of showers before noon.  Cloudy, with a high near 72. East wind 6 to 8 mph.  Chance of precipitation is 20%.

    Slight Chance
    Showers then
    Cloudy

    High: 72 °F

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am.  Patchy fog.  Otherwise, mostly cloudy, with a low around 66. Calm wind becoming south around 5 mph after midnight.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Patchy Fog
    then Showers
    Likely and
    Patchy Fog

    Low: 66 °F

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms, mainly between 10am and 5pm. Some of the storms could produce heavy rain.  Patchy fog before 2pm.  Otherwise, mostly cloudy, with a high near 79. Southwest wind 9 to 14 mph, with gusts as high as 24 mph.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Heavy Rain
    and Patchy
    Fog

    High: 79 °F

  • Wednesday
    Night

    Wednesday Night: A slight chance of showers and thunderstorms before 9pm.  Patchy fog between 8pm and 9pm.  Otherwise, mostly cloudy, with a low around 66. Southwest wind around 9 mph becoming northwest after midnight.  Chance of precipitation is 20%.

    Slight Chance
    T-storms and
    Patchy Fog
    then Partly
    Cloudy

    Low: 66 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 75. North wind around 9 mph.

    Mostly Sunny

    High: 75 °F

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 64.

    Mostly Clear

    Low: 64 °F

  • Friday

    Friday: Sunny, with a high near 78.

    Sunny

    High: 78 °F

  • Friday
    Night

    Friday Night: Clear, with a low around 65.

    Clear

    Low: 65 °F

  • Saturday

    Saturday: Sunny, with a high near 77.

    Sunny

    High: 77 °F

Detailed Forecast

Today
A slight chance of showers before noon. Cloudy, with a high near 72. East wind 6 to 8 mph. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Patchy fog. Otherwise, mostly cloudy, with a low around 66. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers likely and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms, mainly between 10am and 5pm. Some of the storms could produce heavy rain. Patchy fog before 2pm. Otherwise, mostly cloudy, with a high near 79. Southwest wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A slight chance of showers and thunderstorms before 9pm. Patchy fog between 8pm and 9pm. Otherwise, mostly cloudy, with a low around 66. Southwest wind around 9 mph becoming northwest after midnight. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 75. North wind around 9 mph.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 78.
Friday Night
Clear, with a low around 65.
Saturday
Sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 80.
Click Map For Forecast
Point Forecast:
South Dennis MA
 41.71°N 70.16°W (Elev. 49 ft)
6:29 am EDT Aug 21, 2018
7am EDT Aug 21, 2018-6pm EDT Aug 27, 2018
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database