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.

Partly Cloudy

54°F

12°C

Humidity 83%
Wind Speed SE 6 mph
Barometer 29.88 in (1011.7 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 14 May 2:56 am EDT
Extended Forecast for

South Yarmouth MA

  • Overnight

    Overnight: Mostly cloudy, with a low around 54. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers, mainly after 1pm. High near 58. East wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 58 °F

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: Showers, mainly before 1am. Low around 50. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Showers then
    Showers
    Likely

  • Friday

    Friday: Showers likely before 2pm, then a chance of showers after 3pm. Cloudy, with a high near 54. Light and variable wind becoming northeast 5 to 9 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers, mainly before 7pm. Mostly cloudy, with a low around 51. Light and variable wind becoming northwest around 5 mph after midnight. Chance of precipitation is 30%.

    Low: 51 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 67. Southwest wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 67 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 71. Southwest wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 71 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55. Southwest wind around 6 mph becoming calm in the evening.

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 54. South wind around 10 mph, with gusts as high as 20 mph.
Thursday
Showers, mainly after 1pm. High near 58. East wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Showers, mainly before 1am. Low around 50. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Showers likely before 2pm, then a chance of showers after 3pm. Cloudy, with a high near 54. Light and variable wind becoming northeast 5 to 9 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A chance of showers, mainly before 7pm. Mostly cloudy, with a low around 51. Light and variable wind becoming northwest around 5 mph after midnight. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 67. Southwest wind 6 to 11 mph, with gusts as high as 22 mph.
Saturday Night
Mostly clear, with a low around 56. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 71. Southwest wind 7 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 55. Southwest wind around 6 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 67. Light and variable wind becoming east 5 to 7 mph in the morning.
Monday Night
Partly cloudy, with a low around 53. Light south wind.
Tuesday
Mostly sunny, with a high near 70. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 56. Southwest wind 6 to 8 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 74. Southwest wind 6 to 11 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Yarmouth MA
 41.67°N 70.2°W (Elev. 10 ft)
Last Update:
1:21 am EDT May 14, 2026
Forecast Valid:
3am EDT May 14, 2026-6pm EDT May 20, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation