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

Marthas Vineyard Airport (KMVY)

Lat: 41.39°NLon: 70.62°WElev: 59ft.

Fair

69°F

21°C

Humidity 93%
Wind Speed SE 9 mph
Barometer 29.69 in (1005.4 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 29 Jul 2:53 am EDT
Extended Forecast for

Chilmark MA

  • Overnight

    Overnight: Mostly cloudy, with a low around 65. Southeast wind around 11 mph.

    Low: 65 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 75. Southeast wind 15 to 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 75 °F

    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 2am. Mostly cloudy, with a low around 65. East wind 8 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    Showers
    Likely

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 75. North wind 8 to 11 mph. Chance of precipitation is 40%.

    High: 75 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 63. North wind 9 to 13 mph. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Friday

    Friday: Mostly sunny, with a high near 76. North wind around 10 mph.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62. North wind 5 to 7 mph becoming west after midnight.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 77. North wind 5 to 9 mph becoming south in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 64. Southwest wind 6 to 8 mph.

    Low: 64 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 65. Southeast wind around 11 mph.
Wednesday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 75. Southeast wind 15 to 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers and thunderstorms likely, mainly before 2am. Mostly cloudy, with a low around 65. East wind 8 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 75. North wind 8 to 11 mph. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 63. North wind 9 to 13 mph. Chance of precipitation is 40%.
Friday
Mostly sunny, with a high near 76. North wind around 10 mph.
Friday Night
Mostly clear, with a low around 62. North wind 5 to 7 mph becoming west after midnight.
Saturday
Mostly sunny, with a high near 77. North wind 5 to 9 mph becoming south in the afternoon.
Saturday Night
Mostly cloudy, with a low around 64. Southwest wind 6 to 8 mph.
Sunday
Partly sunny, with a high near 78. South wind 7 to 11 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 65. South wind 7 to 9 mph. Chance of precipitation is 30%.
Monday
A chance of showers. Partly sunny, with a high near 78. Southwest wind 7 to 10 mph. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 65. Southwest wind 6 to 8 mph.
Tuesday
Mostly sunny, with a high near 79. North wind around 8 mph becoming east in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chilmark MA
 41.34°N 70.75°W (Elev. 79 ft)
Last Update:
3:27 pm EDT Jul 28, 2026
Forecast Valid:
3am EDT Jul 29, 2026-6pm EDT Aug 4, 2026
 
Forecast Discussion
 
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Additional Resources

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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