Hyannis Harbor Weather

Hazardous marine condition(s):

Synopsis...A COLD FRONT WILL MOVE ACROSS THE WATERS FRIDAY EVENING. LOW PRESSURE WILL FORM ON THE FRONT JUST SOUTH OF THE WATERS FRIDAY NIGHT. THIS LOW WILL VERY SLOWLY MOVE TO THE NORTHEAST AND WILL MOVE TO THE NORTHEAST OF THE WATERS SUNDAY AFTERNOON. THE LOW PRESSURE WILL MOVE OVER THE CANADIAN MARITIMES ON MONDAY.

FOR INFORMATION ON POSSIBLE HAZARDOUS WEATHER BEYOND THE 24-36 HOUR FORECAST PERIOD...PLEASE VISIT WWW.WEATHER.GOV/BOSTON AND FOLLOW THE HAZARDOUS OUTLOOKS LINK AT THE TOP OF THE BLUE BAR ON THE LEFT.

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Tonight: SW wind 9 to 13 kt. Isolated showers and thunderstorms. Patchy dense fog. Seas 2 to 3 ft.

Thursday: SW wind 15 to 18 kt, with gusts as high as 25 kt. A chance of showers, mainly after 2pm. Patchy dense fog. Seas around 3 ft.

Thursday Night: S wind around 15 kt, with gusts as high as 23 kt. Showers likely, mainly after 11pm. Patchy fog. Seas 2 to 3 ft.

Friday: S wind 14 to 17 kt, with gusts as high as 23 kt. Showers, with thunderstorms also possible after 5pm. Patchy fog between 9am and 10am. Seas 1 to 2 ft.

Friday Night: WSW wind 6 to 9 kt becoming N 10 to 13 kt after midnight. Showers and possibly a thunderstorm. Patchy fog after 5am. Seas around 1 ft.

Saturday: NNE wind 13 to 16 kt. Showers likely and possibly a thunderstorm. Seas 1 to 2 ft.

Saturday Night: NW wind 8 to 10 kt. A chance of showers before 3am. Seas around 1 ft.

Sunday: WNW wind around 14 kt. Mostly cloudy. Seas around 1 ft.

Sunday Night: WNW wind around 11 kt. Mostly cloudy. Seas 1 ft or less.

*Notices: (1) This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
(2) The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.

Wednesday, May 22		5:15am / 8:01pm 5:17pm / 3:19am
Isolated Thunderstorms	75° 58°	Day: Night: Partly cloudy with a slight chance of thunderstorms. Areas of patchy fog. Low 58F. Winds SSW at 10 to 20 mph. Chance of rain 30%. Time Temp Chill Humidity Precip Clouds Visibility Wind Weather 8pm 59° 58° 93% 30% 100% 10mi SSE 6 mph 9pm 60° 59° 93% 30% 97% 10mi S 8 mph 10pm 60° 58° 96% 30% 92% 10mi SSW 10 mph 11pm 61° 59° 96% 30% 89% 10mi SSW 12 mph
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Thursday, May 23		5:14am / 8:02pm 6:29pm / 3:58am
Scattered Thunderstorms/Wind	69° 62°	Day: Windy. A few showers in the morning. Isolated thunderstorms in the afternoon. High 69F. Winds SSW at 20 to 30 mph. Chance of rain 30%. Night: Showers and thundershowers in the evening, then cloudy with rain likely overnight...perhaps a rumble of thunder. A few storms may be severe. Low 62F. Winds SSW at 20 to 30 mph. Chance of rain 70%. Rainfall near a quarter of an inch. Time Temp Chill Humidity Precip Clouds Visibility Wind Weather 12am 61° 59° 96% 30% 88% 10mi SSW 13 mph 1am 62° 60° 93% 30% 88% 10mi SSW 14 mph 2am 62° 60° 93% 30% 89% 10mi SSW 15 mph 3am 62° 60° 97% 30% 88% 10mi SSW 15 mph 4am 62° 60° 97% 30% 86% 10mi SW 15 mph 5am 62° 60° 100% 30% 83% 10mi SW 15 mph 6am 63° 61° 97% 30% 80% 10mi SW 16 mph 7am 63° 61° 93% 20% 78% 10mi SW 18 mph 8am 64° 62° 90% 20% 78% 10mi SW 19 mph 9am 65° 63° 90% 20% 79% 10mi SW 19 mph 10am 66° 65° 87% 30% 80% 10mi SW 20 mph 11am 67° 66° 87% 30% 81% 10mi SW 20 mph 12pm 68° 67° 84% 30% 79% 10mi SSW 21 mph 1pm 69° 68° 81% 30% 76% 10mi SSW 21 mph 2pm 69° 68° 81% 30% 75% 10mi SSW 21 mph 3pm 69° 68° 81% 30% 77% 10mi SSW 21 mph 4pm 68° 67° 84% 30% 80% 10mi SSW 20 mph 5pm 66° 65° 87% 30% 84% 10mi SSW 20 mph 6pm 65° 63° 90% 30% 87% 10mi SSW 20 mph 7pm 64° 62° 93% 40% 88% 10mi SSW 19 mph 8pm 63° 61° 93% 40% 89% 10mi SSW 19 mph 9pm 63° 61° 93% 40% 90% 10mi SSW 19 mph 10pm 63° 61° 93% 40% 91% 10mi SSW 19 mph 11pm 63° 61° 93% 40% 92% 10mi SSW 19 mph
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Friday, May 24		5:14am / 8:03pm 7:40pm / 4:43am
Rain/Thunder/Wind	65° 53°	Windy with rain and possibly some thunder. Highs in the mid 60s and lows in the low 50s. Time Temp Chill Humidity Precip Clouds Visibility Wind Weather 12am 63° 61° 93% 50% 92% 10mi SSW 19 mph 1am 63° 61° 93% 60% 92% 7mi SSW 18 mph 2am 63° 61° 93% 70% 92% 7mi SSW 18 mph 3am 63° 61° 97% 70% 92% 7mi SSW 18 mph 4am 63° 61° 97% 70% 92% 5mi SSW 20 mph 5am 63° 61° 97% 70% 92% 5mi SSW 20 mph 6am 63° 61° 97% 70% 92% 5mi SSW 20 mph 7am 63° 61° 93% 70% 92% 5mi SSW 20 mph 8am 63° 61° 93% 70% 92% 5mi SSW 20 mph 9am 64° 62° 90% 70% 91% 5mi SSW 21 mph 10am 64° 62° 93% 70% 91% 5mi SSW 21 mph 11am 65° 63° 90% 70% 90% 5mi S 22 mph 12pm 65° 63° 87% 70% 88% 5mi SSW 21 mph 1pm 65° 63° 87% 70% 86% 5mi SSW 20 mph 2pm 65° 63° 84% 70% 85% 5mi SSW 20 mph 3pm 65° 63° 84% 70% 86% 5mi SSW 20 mph 4pm 65° 63° 84% 80% 87% 5mi SSW 20 mph 5pm 64° 62° 87% 70% 89% 5mi SSW 21 mph 6pm 63° 61° 87% 60% 90% 5mi SSW 20 mph 7pm 60° 57° 90% 10% 89% 10mi SSW 15 mph
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Saturday, May 25		5:13am / 8:03pm 8:48pm / 5:37am
Showers	61° 52°	Showers. Highs in the low 60s and lows in the low 50s.
Sunday, May 26		5:12am / 8:04pm 9:48pm / 6:38am
Few Showers	61° 48°	Occasional showers possible. Highs in the low 60s and lows in the upper 40s.
Monday, May 27		5:12am / 8:05pm 10:41pm / 7:46am
Partly Cloudy	67° 51°	Mix of sun and clouds. Highs in the upper 60s and lows in the low 50s.
Tuesday, May 28		5:11am / 8:06pm 11:25pm / 8:57am
Partly Cloudy	69° 55°	Times of sun and clouds. Highs in the upper 60s and lows in the mid 50s.
Wednesday, May 29		5:10am / 8:07pm 11:59pm / 10:08am
Partly Cloudy	70° 56°	Partly cloudy. Highs in the low 70s and lows in the mid 50s.
Thursday, May 30		5:10am / 8:08pm 12:04am / 11:18am
AM Clouds/PM Sun	70° 56°	Morning clouds followed by afternoon sun. Highs in the low 70s and lows in the mid 50s.
Friday, May 31		5:09am / 8:08pm 12:38am / 12:25pm
Cloudy	72° 56°	Mostly Cloudy. Highs in the low 70s and lows in the mid 50s.