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Hyannis Weather Warning NWS WEATHER ALERT FOR THE HYANNIS, MA AREA - Issued: 232 AM EDT Sat Sep 19 2026 Hyannis Weather Warning

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Hyannis, MA Weather Forecast

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Hyannis, MA Weather Forecast

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Hyannis MA weather - Clear - 61°F
Clear
61°F
Updated 3:59 pm
Feels Like 53°F
Humidity 57%
Wind N 10 mph
Barometer  30.18 in
Dew Point 46°F
Hyannis MA weather - Clear - 16°C
Clear
16°C
Updated 3:59 pm
Feels Like 12°C
Humidity 57%
Wind N 16 km/h
Barometer  102.2 kPa
Dew Point 8°C
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Hyannis Weather Forecast

THIS AFTERNOON TONIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY WEDNESDAY THURSDAY THURSDAY NIGHT FRIDAY
Hyannis, MA Weather - This Afternoon Mostly Sunny Hyannis, MA Weather - Tonight Partly Cloudy Hyannis, MA Weather - Sunday Chance Of Showers Hyannis, MA Weather - Sunday Night Showers Hyannis, MA Weather - Monday Chance Of Showers Hyannis, MA Weather - Monday Night Mostly Cloudy Hyannis, MA Weather - Tuesday Mostly Cloudy Hyannis, MA Weather - Wednesday Mostly Cloudy Hyannis, MA Weather - Thursday Chance Of Showers Hyannis, MA Weather - Thursday Night Chance Of Showers Hyannis, MA Weather - Friday Chance Of Showers
Mostly Sunny Partly Cloudy Chance of Showers Showers Chance of Showers Mostly Cloudy Mostly Cloudy Mostly Cloudy Chance of Showers Chance of Showers Chance of Showers
Hi: 61°FHi: 16°C
 Lo: 49°FLo: 9°C Hi: 65°FHi: 18°C
 Lo: 60°FLo: 16°C Hi: 65°FHi: 18°C
 Hi: 65°FHi: 18°C
Lo: 55°FLo: 13°C		 Hi: 65°FHi: 18°C
Lo: 55°FLo: 13°C		 Hi: 65°FHi: 18°C
Lo: 55°FLo: 13°C		 Hi: 65°FHi: 18°C
Lo: 55°FLo: 13°C		 Hi: 65°FHi: 18°C
Lo: 55°FLo: 13°C		 Hi: 65°FHi: 18°C
POP: 100% POP: 100% POP: 50% POP: 40% POP: 40% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 103 PM EDT Sat Sep 19 2026 Hyannis, MA Weather - WeatherWorld.com

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Issued: 217 PM EDT Sat Sep 19 2026

Key Messages

  • Quiet through the rest of today, cooler tonight, with clouds returning before sunrise.
  • Briefly dry early to mid morning, then beneficial rain overspreads southern New England and continues through the evening and overnight hours. Flooding concerns remain low.
  • Showers may linger through early next week. A coastal system is possible late week.

Discussion

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KEY MESSAGE 1...Quiet through the rest of today, cooler tonight, with clouds returning before sunrise.

A 1020-1025 mb high pressure s...