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Heavy Rain and Potential for Flash Flooding for Mid-Atlantic

An unseasonably strong storm system will bring heavy rain to the Mid-Atlantic and central Appalachians Friday into Saturday. Flash flooding and widespread lowland flooding are possible during this period. Meanwhile, monsoon moisture will continue to produce heavy rain with the possibility of localized flash flooding in the Desert Southwest through the southern/central Rockies and High Plains. Read More >

Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Partly Cloudy

75°F

24°C

Humidity 79%
Wind Speed Calm
Barometer 29.84 in (1010.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 28 Jul 8:56 am EDT
Extended Forecast for

South Dennis MA

  • Today

    Today: Mostly sunny, with a high near 79. West wind 6 to 9 mph becoming south in the afternoon.

    Mostly Sunny

    High: 79 °F

  • Tonight

    Tonight: A chance of showers between 9pm and midnight, then a chance of rain after midnight.  Patchy fog before 4am.  Otherwise, increasing clouds, with a low around 64. South wind around 6 mph becoming light and variable.  Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Chance
    Showers and
    Patchy Fog

    Low: 64 °F

  • Saturday

    Saturday: Rain likely, mainly before 9am.  Patchy fog between 8am and noon.  Otherwise, cloudy, with a high near 68. Northeast wind 10 to 17 mph, with gusts as high as 30 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Rain Likely
    and Patchy
    Fog

    High: 68 °F

  • Saturday
    Night

    Saturday Night: A chance of rain, mainly before 11pm.  Areas of fog after 9pm.  Otherwise, mostly cloudy, with a low around 61. Northeast wind around 18 mph, with gusts as high as 33 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Chance Rain
    and Areas Fog

    Low: 61 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 69. Northeast wind 16 to 18 mph, with gusts as high as 31 mph.

    Mostly Sunny

    High: 69 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 60.

    Partly Cloudy

    Low: 60 °F

  • Monday

    Monday: A chance of rain after 10am.  Partly sunny, with a high near 71. Chance of precipitation is 40%.

    Chance Rain

    High: 71 °F

  • Monday
    Night

    Monday Night: A chance of rain.  Areas of fog after 9pm.  Otherwise, mostly cloudy, with a low around 60. Chance of precipitation is 30%.

    Chance Rain
    and Areas Fog

    Low: 60 °F

  • Tuesday

    Tuesday: A chance of showers before 11am.  Areas of fog before 10am.  Otherwise, partly sunny, with a high near 73. Chance of precipitation is 30%.

    Chance
    Showers and
    Areas Fog
    then Partly
    Sunny

    High: 73 °F

Detailed Forecast

Today
Mostly sunny, with a high near 79. West wind 6 to 9 mph becoming south in the afternoon.
Tonight
A chance of showers between 9pm and midnight, then a chance of rain after midnight. Patchy fog before 4am. Otherwise, increasing clouds, with a low around 64. South wind around 6 mph becoming light and variable. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain likely, mainly before 9am. Patchy fog between 8am and noon. Otherwise, cloudy, with a high near 68. Northeast wind 10 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
A chance of rain, mainly before 11pm. Areas of fog after 9pm. Otherwise, mostly cloudy, with a low around 61. Northeast wind around 18 mph, with gusts as high as 33 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Mostly sunny, with a high near 69. Northeast wind 16 to 18 mph, with gusts as high as 31 mph.
Sunday Night
Partly cloudy, with a low around 60.
Monday
A chance of rain after 10am. Partly sunny, with a high near 71. Chance of precipitation is 40%.
Monday Night
A chance of rain. Areas of fog after 9pm. Otherwise, mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Tuesday
A chance of showers before 11am. Areas of fog before 10am. Otherwise, partly sunny, with a high near 73. Chance of precipitation is 30%.
Tuesday Night
Areas of fog between 9pm and 2am. Otherwise, partly cloudy, with a low around 62.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Mostly sunny, with a high near 78.
Click Map For Forecast
Point Forecast:
South Dennis MA
 41.71°N 70.16°W (Elev. 49 ft)
8:50 am EDT Jul 28, 2017
9am EDT Jul 28, 2017-6pm EDT Aug 3, 2017
 
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