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

Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fair

39°F

4°C

Humidity 93%
Wind Speed Calm
Barometer 30.47 in (1031.8 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 11 Oct 2:56 am EDT
Extended Forecast for

Hyannis MA

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 49. Calm wind.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 62. Southeast wind 6 to 10 mph.

    High: 62 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Showers, with thunderstorms also possible after 5am. Some of the storms could produce heavy rainfall. Patchy fog. Low around 54. East wind 7 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 54 °F

    Heavy Rain
    and Patchy
    Fog

  • Columbus Day

    Columbus Day: A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 10am. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 63. North wind 11 to 13 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 63 °F

    Chance
    Showers and
    Patchy Fog
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 52. Calm wind becoming northeast around 6 mph after midnight.

    Low: 52 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 64. East wind 7 to 10 mph becoming south in the afternoon.

    High: 64 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of showers after 1am. Mostly cloudy, with a low around 57. Southwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    Low: 57 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers before 9am. Mostly sunny, with a high near 67. Southwest wind 11 to 13 mph becoming northwest in the afternoon. Chance of precipitation is 30%.

    High: 67 °F

    Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 49. Northwest wind 8 to 10 mph.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 49. Calm wind.
Sunday
Mostly cloudy, with a high near 62. Southeast wind 6 to 10 mph.
Sunday Night
Showers, with thunderstorms also possible after 5am. Some of the storms could produce heavy rainfall. Patchy fog. Low around 54. East wind 7 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Columbus Day
A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 10am. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 63. North wind 11 to 13 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
Partly cloudy, with a low around 52. Calm wind becoming northeast around 6 mph after midnight.
Tuesday
Mostly cloudy, with a high near 64. East wind 7 to 10 mph becoming south in the afternoon.
Tuesday Night
A chance of showers after 1am. Mostly cloudy, with a low around 57. Southwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Wednesday
A chance of showers before 9am. Mostly sunny, with a high near 67. Southwest wind 11 to 13 mph becoming northwest in the afternoon. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 49. Northwest wind 8 to 10 mph.
Thursday
Sunny, with a high near 59. Northwest wind 11 to 14 mph.
Thursday Night
Partly cloudy, with a low around 47. North wind around 7 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 63. South wind 7 to 13 mph. Chance of precipitation is 30%.
Friday Night
Showers likely. Mostly cloudy, with a low around 49. South wind 13 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Saturday
A chance of showers. Mostly cloudy, with a high near 59. West wind around 17 mph, with gusts as high as 32 mph. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Hyannis MA
 41.66°N 70.29°W (Elev. 39 ft)
Last Update:
2:17 am EDT Oct 11, 2026
Forecast Valid:
3am EDT Oct 11, 2026-6pm EDT Oct 17, 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