National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Marthas Vineyard Airport (KMVY)

Lat: 41.39°NLon: 70.62°WElev: 59ft.

Fog/Mist

69°F

21°C

Humidity 100%
Wind Speed W 3 mph
Barometer 29.88 in (1011.7 mb)
Dewpoint 69°F (21°C)
Visibility 6.00 mi
Last update 3 Jul 3:53 am EDT
Extended Forecast for

Edgartown MA

Heat Advisory July 3, 04:19am until July 4, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 3, 04:19am until July 4, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Today

    High: 92 °F

    Hot

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly between 11pm and 4am. Increasing clouds, with a low around 73. West wind 5 to 8 mph. Chance of precipitation is 40%.

    Low: 73 °F

    Scattered
    T-storms

  • Independence Day

    Independence Day: Isolated showers and thunderstorms before 10am, then scattered showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Northwest wind 7 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Scattered
    T-storms

  • Saturday Night

    Saturday Night: Scattered showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 65. Light and variable wind becoming northwest around 6 mph after midnight. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Scattered
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 79. Northeast wind 6 to 8 mph becoming southeast in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers after 2am. Mostly cloudy, with a low around 58. Southeast wind 5 to 9 mph becoming light after midnight. Chance of precipitation is 20%.

    Low: 58 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday

    Monday: A chance of showers. Partly sunny, with a high near 74. East wind 7 to 10 mph. Chance of precipitation is 40%.

    High: 74 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Mostly cloudy, with a low around 65. Southeast wind around 11 mph. Chance of precipitation is 60%.

    Low: 65 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Today
Sunny and hot, with a high near 92. Heat index values as high as 95. Southwest wind 5 to 11 mph, with gusts as high as 26 mph.
Tonight
Scattered showers and thunderstorms, mainly between 11pm and 4am. Increasing clouds, with a low around 73. West wind 5 to 8 mph. Chance of precipitation is 40%.
Independence Day
Isolated showers and thunderstorms before 10am, then scattered showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Northwest wind 7 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Scattered showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 65. Light and variable wind becoming northwest around 6 mph after midnight. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Mostly sunny, with a high near 79. Northeast wind 6 to 8 mph becoming southeast in the afternoon.
Sunday Night
A slight chance of showers after 2am. Mostly cloudy, with a low around 58. Southeast wind 5 to 9 mph becoming light after midnight. Chance of precipitation is 20%.
Monday
A chance of showers. Partly sunny, with a high near 74. East wind 7 to 10 mph. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Mostly cloudy, with a low around 65. Southeast wind around 11 mph. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then a chance of showers after 2pm. Partly sunny, with a high near 78. East wind around 15 mph. Chance of precipitation is 60%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 65. Northeast wind 10 to 14 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 79. Northeast wind around 11 mph. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 62. West wind 6 to 9 mph.
Thursday
Mostly sunny, with a high near 82. Southwest wind 6 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Edgartown MA
 41.38°N 70.51°W (Elev. 3 ft)
Last Update:
3:11 am EDT Jul 3, 2026
Forecast Valid:
4am EDT Jul 3, 2026-6pm EDT Jul 9, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation