Dangerous Heat Wave for the West; Severe Storms and Heavy Rain for Upper Midwest

A sweltering and long duration heat wave will build across the West this weekend through much of next week. Excessive heat warnings/watches along with heat advisories are in effect from the Southwest to the Northwest. Dangerous heat is also persisting across the southern Plains. Meanwhile, severe storms are likely in the Upper Midwest with heavy rain/flooding, damaging winds, hail, and tornadoes. Read More >

Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fair

79°F

26°C

Humidity 62%
Wind Speed N 9 mph
Barometer 30.03 in (1017.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 14 Aug 9:56 am EDT
Extended Forecast for

Hyannis MA

High Surf Advisory August 15, 08:00am until August 15, 08:00pm
Click here for hazard details and duration
High Surf Advisory
  • Today

    Today: Mostly sunny, with a high near 81. Northeast wind 8 to 11 mph.

    Mostly Sunny

    High: 81 °F

  • Tonight

    Tonight: Isolated showers after 3am.  Mostly cloudy, with a low around 69. Northeast wind 7 to 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 20%.

    Partly Cloudy
    then Isolated
    Showers

    Low: 69 °F

  • Saturday

    Saturday: Isolated showers.  Mostly cloudy, with a high near 74. Breezy, with a northeast wind 15 to 21 mph, with gusts as high as 32 mph.  Chance of precipitation is 20%.

    Isolated
    Showers and
    Breezy

    High: 74 °F

  • Saturday
    Night

    Saturday Night: A chance of showers, mainly after 9pm.  Mostly cloudy, with a low around 67. Breezy, with a northeast wind 11 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 40%.

    Chance
    Showers and
    Breezy

    Low: 67 °F

  • Sunday

    Sunday: A chance of showers.  Mostly cloudy, with a high near 75. Northeast wind 11 to 15 mph, with gusts as high as 28 mph.  Chance of precipitation is 40%.

    Chance
    Showers

    High: 75 °F

  • Sunday
    Night

    Sunday Night: A chance of showers.  Mostly cloudy, with a low around 67. East wind around 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 40%.

    Chance
    Showers

    Low: 67 °F

  • Monday

    Monday: A chance of showers.  Mostly cloudy, with a high near 75. East wind 10 to 13 mph.  Chance of precipitation is 50%.

    Chance
    Showers

    High: 75 °F

  • Monday
    Night

    Monday Night: A chance of showers before midnight.  Mostly cloudy, with a low around 66. East wind 6 to 9 mph becoming north after midnight.  Chance of precipitation is 30%.

    Chance
    Showers then
    Mostly Cloudy

    Low: 66 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79. Northwest wind around 6 mph becoming southwest in the afternoon.

    Mostly Sunny

    High: 79 °F

Detailed Forecast

Today
Mostly sunny, with a high near 81. Northeast wind 8 to 11 mph.
Tonight
Isolated showers after 3am. Mostly cloudy, with a low around 69. Northeast wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Saturday
Isolated showers. Mostly cloudy, with a high near 74. Breezy, with a northeast wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.
Saturday Night
A chance of showers, mainly after 9pm. Mostly cloudy, with a low around 67. Breezy, with a northeast wind 11 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Sunday
A chance of showers. Mostly cloudy, with a high near 75. Northeast wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 67. East wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Monday
A chance of showers. Mostly cloudy, with a high near 75. East wind 10 to 13 mph. Chance of precipitation is 50%.
Monday Night
A chance of showers before midnight. Mostly cloudy, with a low around 66. East wind 6 to 9 mph becoming north after midnight. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 79. Northwest wind around 6 mph becoming southwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 68. Southwest wind around 7 mph becoming northwest after midnight.
Wednesday
Sunny, with a high near 78. North wind around 6 mph becoming northeast in the afternoon.
Wednesday Night
Partly cloudy, with a low around 69. South wind around 7 mph becoming west after midnight.
Thursday
Mostly sunny, with a high near 79. Northwest wind 7 to 9 mph.
Click Map For Forecast
Point Forecast:
Hyannis MA
 41.66°N 70.29°W (Elev. 39 ft)
10:07 am EDT Aug 14, 2020
10am EDT Aug 14, 2020-6pm EDT Aug 20, 2020
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database