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

Hazardous Weather Conditions

Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fog/Mist

30°F

-1°C

Humidity 92%
Wind Speed Calm
Barometer 30.05 in (1017.8 mb)
Dewpoint 28°F (-2°C)
Visibility 6.00 mi
Last update 18 Jan 4:56 am EST
Extended Forecast for

Dennis MA

Winter Weather Advisory January 18, 07:00am until January 19, 07:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Today

    Today: Snow, mainly after 9am. Patchy fog after 9am. High near 38. Light and variable wind becoming southwest around 6 mph in the morning. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 38 °F

    Snow and
    Patchy Fog

  • Tonight

    Tonight: Snow. Patchy fog. Low around 29. Northeast wind 7 to 10 mph becoming northwest after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 29 °F

    Snow and
    Patchy Fog

  • M.L.King Day

    M.L.King Day: Snow showers likely, mainly before 10am. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 35. Southwest wind 9 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 35 °F

    Snow Showers
    Likely and
    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 22. West wind 9 to 15 mph, with gusts as high as 28 mph.

    Low: 22 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 26. West wind 7 to 14 mph, with gusts as high as 26 mph.

    High: 26 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 17. West wind 8 to 15 mph.

    Low: 17 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38. Southwest wind 8 to 14 mph.

    High: 38 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers after 4am. Mostly cloudy, with a low around 30. Southwest wind around 14 mph. Chance of precipitation is 30%.

    Low: 30 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of snow showers before 8am, then a chance of rain showers between 8am and 11am. Partly sunny, with a high near 40. Southwest wind around 15 mph. Chance of precipitation is 30%.

    High: 40 °F

    Chance
    Rain/Snow
    then Partly
    Sunny

Detailed Forecast

Today
Snow, mainly after 9am. Patchy fog after 9am. High near 38. Light and variable wind becoming southwest around 6 mph in the morning. Chance of precipitation is 100%. Little or no snow accumulation expected.
Tonight
Snow. Patchy fog. Low around 29. Northeast wind 7 to 10 mph becoming northwest after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
M.L.King Day
Snow showers likely, mainly before 10am. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 35. Southwest wind 9 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday Night
Partly cloudy, with a low around 22. West wind 9 to 15 mph, with gusts as high as 28 mph.
Tuesday
Mostly sunny, with a high near 26. West wind 7 to 14 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly clear, with a low around 17. West wind 8 to 15 mph.
Wednesday
Mostly sunny, with a high near 38. Southwest wind 8 to 14 mph.
Wednesday Night
A chance of showers after 4am. Mostly cloudy, with a low around 30. Southwest wind around 14 mph. Chance of precipitation is 30%.
Thursday
A chance of snow showers before 8am, then a chance of rain showers between 8am and 11am. Partly sunny, with a high near 40. Southwest wind around 15 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 22. West wind around 15 mph.
Friday
Mostly sunny, with a high near 33. West wind 10 to 13 mph.
Friday Night
Mostly cloudy, with a low around 25. Southwest wind around 10 mph.
Saturday
A chance of snow showers. Mostly cloudy, with a high near 36. Southwest wind 10 to 13 mph. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dennis MA
 41.74°N 70.21°W (Elev. 30 ft)
Last Update:
2:21 am EST Jan 18, 2026
Forecast Valid:
5am EST Jan 18, 2026-6pm EST Jan 24, 2026
 
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