Heavy Rainfall and Severe Thunderstorms Possible Across the Central U.S.; Hurricane Lane Continues Westward Across the Central Pacific

An area of low pressure moving across the Central U.S. will continue to bring heavy rainfall and flash flooding across parts of that region, along with the threat for severe thunderstorms through this evening. Meanwhile, swells from Hurricane Lane are reaching parts of Hawaii today, with some additional impacts possible later this week, depending on the storm's track. Read More >

Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Overcast

22°C

71°F

Humidity 81%
Wind Speed N 20 G 39 km/h
Barometer 1019.7 mb (30.11 in)
Dewpoint 18°C (65°F)
Visibility 16 km
Last update 20 Aug 1:56 pm EDT
Extended Forecast for

South Dennis MA

  • This
    Afternoon

    This Afternoon: Mostly cloudy, with a high near 22. Northeast wind around 21 km/h, with gusts as high as 42 km/h.

    Mostly Cloudy

    High: 22 °C

  • Tonight

    Tonight: A slight chance of showers after 3am.  Areas of fog after 1am.  Otherwise, mostly cloudy, with a low around 18. Northeast wind 10 to 13 km/h.  Chance of precipitation is 20%.

    Mostly Cloudy
    then Slight
    Chance
    Showers and
    Areas Fog

    Low: 18 °C

  • Tuesday

    Tuesday: A slight chance of showers before 10am.  Mostly cloudy, with a high near 23. East wind 11 to 14 km/h.  Chance of precipitation is 20%.

    Slight Chance
    Showers then
    Mostly Cloudy

    High: 23 °C

  • Tuesday
    Night

    Tuesday Night: A slight chance of showers before 1am, then a chance of showers and thunderstorms after 4am.  Patchy fog after 9pm.  Otherwise, mostly cloudy, with a low around 19. Calm wind.  Chance of precipitation is 30%.

    Chance
    Showers and
    Patchy Fog

    Low: 19 °C

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly before 9am. Some of the storms could produce heavy rain.  Patchy fog before 1pm.  Otherwise, mostly cloudy, with a high near 27. Southwest wind 11 to 21 km/h, with gusts as high as 42 km/h.  Chance of precipitation is 70%.

    Heavy Rain
    and Patchy
    Fog

    High: 27 °C

  • Wednesday
    Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 9pm.  Mostly cloudy, with a low around 19. Chance of precipitation is 30%.

    Chance
    Showers then
    Partly Cloudy

    Low: 19 °C

  • Thursday

    Thursday: Mostly sunny, with a high near 24.

    Mostly Sunny

    High: 24 °C

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 18.

    Mostly Clear

    Low: 18 °C

  • Friday

    Friday: Sunny, with a high near 26.

    Sunny

    High: 26 °C

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 22. Northeast wind around 21 km/h, with gusts as high as 42 km/h.
Tonight
A slight chance of showers after 3am. Areas of fog after 1am. Otherwise, mostly cloudy, with a low around 18. Northeast wind 10 to 13 km/h. Chance of precipitation is 20%.
Tuesday
A slight chance of showers before 10am. Mostly cloudy, with a high near 23. East wind 11 to 14 km/h. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers before 1am, then a chance of showers and thunderstorms after 4am. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 19. Calm wind. Chance of precipitation is 30%.
Wednesday
Showers and thunderstorms likely, mainly before 9am. Some of the storms could produce heavy rain. Patchy fog before 1pm. Otherwise, mostly cloudy, with a high near 27. Southwest wind 11 to 21 km/h, with gusts as high as 42 km/h. Chance of precipitation is 70%.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 9pm. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 24.
Thursday Night
Mostly clear, with a low around 18.
Friday
Sunny, with a high near 26.
Friday Night
Mostly clear, with a low around 18.
Saturday
Sunny, with a high near 26.
Saturday Night
Mostly clear, with a low around 19.
Sunday
Mostly sunny, with a high near 26.
Click Map For Forecast
Point Forecast:
South Dennis MA
 41.71°N 70.16°W (Elev. 15 m)
1:24 pm EDT Aug 20, 2018
2pm EDT Aug 20, 2018-6pm EDT Aug 26, 2018
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database