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

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fair

77°F

25°C

Humidity 94%
Wind Speed SW 8 mph
Barometer 29.95 in (1014.4 mb)
Dewpoint 75°F (24°C)
Visibility 7.00 mi
Heat Index78°F (26°C)
Last update 30 Jul 11:56 pm EDT
Extended Forecast for

South Yarmouth MA

  • Overnight

    Overnight: Partly cloudy, with a low around 68. Southwest wind 6 to 8 mph.

    Low: 68 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers, mainly after 3pm. Partly sunny, with a high near 78. North wind 7 to 11 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 78 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely, mainly after 3am. Cloudy, with a low around 63. Northeast wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 63 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Showers likely. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 72. Northeast wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 72 °F

    Showers
    Likely and
    Patchy Fog

  • Friday Night

    Friday Night: A chance of showers, mainly before midnight. Mostly cloudy, with a low around 61. Northeast wind around 11 mph. Chance of precipitation is 40%.

    Low: 61 °F

    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 76. North wind around 11 mph.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62. East wind around 5 mph becoming light and variable in the evening.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79. Light west wind becoming south 5 to 9 mph in the morning.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66. Southwest wind around 7 mph.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 68. Southwest wind 6 to 8 mph.
Thursday
A chance of showers, mainly after 3pm. Partly sunny, with a high near 78. North wind 7 to 11 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Showers likely, mainly after 3am. Cloudy, with a low around 63. Northeast wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers likely. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 72. Northeast wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A chance of showers, mainly before midnight. Mostly cloudy, with a low around 61. Northeast wind around 11 mph. Chance of precipitation is 40%.
Saturday
Sunny, with a high near 76. North wind around 11 mph.
Saturday Night
Mostly clear, with a low around 62. East wind around 5 mph becoming light and variable in the evening.
Sunday
Sunny, with a high near 79. Light west wind becoming south 5 to 9 mph in the morning.
Sunday Night
Mostly clear, with a low around 66. Southwest wind around 7 mph.
Monday
Mostly sunny, with a high near 80. South wind 6 to 9 mph.
Monday Night
Partly cloudy, with a low around 66. South wind around 6 mph.
Tuesday
Mostly sunny, with a high near 79. Southeast wind 6 to 9 mph.
Tuesday Night
Mostly cloudy, with a low around 65. Southeast wind around 6 mph.
Wednesday
Partly sunny, with a high near 78. East wind 6 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Yarmouth MA
 41.67°N 70.2°W (Elev. 10 ft)
Last Update:
6:24 pm EDT Jul 30, 2025
Forecast Valid:
12am EDT Jul 31, 2025-6pm EDT Aug 6, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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