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Hazardous Weather Conditions

Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Overcast

43°F

6°C

Humidity 58%
Wind Speed W 17 G 28 mph
Barometer 30.00 in (1016.1 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 17 Jan 5:56 pm EST
Extended Forecast for

South Yarmouth MA

Winter Weather Advisory January 18, 10:00am until January 19, 04:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. Southwest wind 5 to 7 mph becoming calm after midnight.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain likely before 3pm, then snow, possibly mixed with rain between 3pm and 4pm, then snow after 4pm. High near 39. Calm wind becoming southwest around 6 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 39 °F

    Chance Rain
    then
    Rain/Snow

  • Sunday Night

    Sunday Night: Snow, mainly before 2am. Low around 26. Calm wind becoming north around 6 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 26 °F

    Snow

  • M.L.King Day

    M.L.King Day: A slight chance of snow between 8am and 9am. Mostly sunny, with a high near 34. Southwest wind 6 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 34 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 20. West wind around 10 mph, with gusts as high as 24 mph.

    Low: 20 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 27. West wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 27 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 16. West wind 6 to 8 mph, with gusts as high as 20 mph.

    Low: 16 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 39. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 39 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 29. Southwest wind around 9 mph, with gusts as high as 21 mph.

    Low: 29 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 31. Southwest wind 5 to 7 mph becoming calm after midnight.
Sunday
Rain likely before 3pm, then snow, possibly mixed with rain between 3pm and 4pm, then snow after 4pm. High near 39. Calm wind becoming southwest around 6 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Sunday Night
Snow, mainly before 2am. Low around 26. Calm wind becoming north around 6 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
M.L.King Day
A slight chance of snow between 8am and 9am. Mostly sunny, with a high near 34. Southwest wind 6 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 20. West wind around 10 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 27. West wind 9 to 11 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 16. West wind 6 to 8 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 39. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 29. Southwest wind around 9 mph, with gusts as high as 21 mph.
Thursday
A chance of rain after noon. Mostly cloudy, with a high near 39. Southwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 21. Northwest wind around 8 mph, with gusts as high as 21 mph.
Friday
Mostly sunny, with a high near 33. West wind 7 to 9 mph.
Friday Night
Mostly cloudy, with a low around 22. West wind around 7 mph.
Saturday
A chance of snow. Partly sunny, with a high near 33. West wind 7 to 9 mph. Chance of precipitation is 30%.
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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:
1:13 pm EST Jan 17, 2026
Forecast Valid:
6pm EST Jan 17, 2026-6pm EST Jan 24, 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