| NWS Forecast for: 21NM NE Hyannis MA Atlantic Ocean Issued by: National Weather Service Norton, MA Last Update: 10:01 pm EDT Sep 11, 2026 | |
| Saturday: ENE wind 5 to 8 kt becoming SSE in the afternoon. Sunny. Seas 1 ft or less. Saturday Night: S wind around 8 kt. Partly cloudy. Seas 1 ft or less. Sunday: SE wind around 9 kt. Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm. Some of the storms could produce heavy rainfall. Patchy fog after noon. Seas 1 ft or less. Sunday Night: Variable winds 5 kt or less. A slight chance of showers before 7pm, then a slight chance of showers after 4am. Patchy fog. Seas 1 ft or less. Monday: NNW wind 9 to 12 kt increasing to 12 to 15 kt in the morning. A chance of showers, mainly before 9am. Patchy fog before 11am. Seas 1 ft or less. Monday Night: NNE wind 6 to 10 kt. Mostly clear. Seas 1 ft or less. Tuesday: NE wind 6 to 9 kt. Sunny. Seas 1 ft or less. Tuesday Night: Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less. Wednesday: Variable winds less than 5 kt becoming S 5 to 8 kt in the morning. Sunny. Seas 1 ft or less. | |
| Marine Point Forecast: 41.88°N 69.97°W Associated Zone Forecast which includes this point | |
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