Hyannis Harbor Weather

Synopsis...A BACK DOOR COLD FRONT WILL PUSH WEST INTO THE SOUTHERN NEW ENGLAND THIS EVENING. THE BOUNDARY IS EXPECTED TO LIFT BACK NORTH WEDNESDAY AFTERNOON. A COLD FRONT WILL MOVE ACROSS THE WATERS BY FRIDAY EVENING. HIGH PRES WILL FOLLOW FOR THE WEEKEND AND INTO EARLY NEXT WEEK.

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: Variable winds 5 kt or less. Scattered showers before 1am, then a slight chance of showers and thunderstorms between 1am and 3am, then a slight chance of showers after 3am. Areas of dense fog. Seas around 1 ft.

Wednesday: SW wind 8 to 13 kt. A slight chance of showers, with thunderstorms also possible after 8am. Areas of dense fog before noon. Seas around 1 ft.

Wednesday Night: SW wind 12 to 14 kt. A slight chance of showers and thunderstorms before 9pm. Patchy fog between 10pm and 2am. Seas around 1 ft.

Thursday: SW wind 15 to 18 kt. A chance of showers and thunderstorms, mainly after 3pm. Seas 1 to 2 ft.

Thursday Night: SSW wind around 17 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Patchy fog after 10pm. Seas 1 to 2 ft.

Friday: S wind 12 to 14 kt. Showers and possibly a thunderstorm. Seas around 2 ft.

Friday Night: SSW wind 6 to 10 kt becoming NW after midnight. A chance of showers before 4am. Seas around 1 ft.

Saturday: NW wind around 9 kt. Mostly sunny. Seas around 1 ft.

Saturday Night: W wind 8 to 11 kt. Partly cloudy. Seas around 1 ft.

*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.

Tuesday, May 21		5:16am / 8:00pm 4:07pm / 2:45am
Thundershowers	68° 54°	Day: Night: Showers and thundershowers likely this evening with a shower or two possible overnight. Low 54F. Winds SW at 5 to 10 mph. Chance of rain 60%. Time Temp Chill Humidity Precip Clouds Visibility Wind Weather 8pm 58° 58° 90% 40% 74% 10mi SW 3 mph 9pm 56° 56° 96% 40% 86% 10mi SW 3 mph 10pm 56° 56° 96% 20% 89% 10mi WSW 2 mph 11pm 55° 55° 100% 20% 89% 10mi WSW 2 mph
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Wednesday, May 22		5:15am / 8:01pm 5:17pm / 3:19am
Mostly Cloudy	72° 61°	Day: Mostly cloudy. High 72F. Winds SW at 10 to 20 mph. Night: Mostly cloudy. Low 61F. Winds SW at 15 to 25 mph. Time Temp Chill Humidity Precip Clouds Visibility Wind Weather 12am 57° 57° 96% 20% 89% 10mi SW 4 mph 1am 57° 57° 96% 30% 90% 10mi SW 4 mph 2am 57° 56° 96% 30% 90% 10mi SW 5 mph 3am 57° 56° 96% 30% 91% 10mi SW 5 mph 4am 57° 56° 100% 20% 90% 10mi SW 6 mph 5am 57° 56° 100% 20% 90% 10mi SSW 6 mph 6am 58° 57° 100% 20% 91% 10mi SSW 7 mph 7am 60° 59° 96% 20% 91% 10mi SW 9 mph 8am 61° 60° 93% 20% 90% 10mi SW 10 mph 9am 62° 61° 93% 20% 89% 10mi SW 11 mph 10am 64° 63° 90% 20% 87% 10mi SW 12 mph 11am 65° 64° 87% 20% 84% 10mi SW 12 mph 12pm 68° 68° 78% 20% 80% 10mi SW 13 mph 1pm 70° 70° 76% 20% 76% 10mi SSW 14 mph 2pm 71° 71° 73% 20% 72% 10mi SSW 15 mph 3pm 70° 70° 76% 20% 69% 10mi SSW 15 mph 4pm 69° 69° 78% 20% 68% 10mi SSW 16 mph 5pm 68° 68° 81% 20% 69% 10mi SSW 16 mph 6pm 66° 65° 87% 20% 73% 10mi SW 15 mph 7pm 65° 64° 87% 10% 80% 10mi SW 15 mph 8pm 63° 61° 93% 10% 83% 10mi SW 14 mph 9pm 62° 60° 97% 10% 85% 10mi SW 14 mph 10pm 62° 60° 97% 10% 85% 10mi SW 14 mph 11pm 62° 60° 97% 10% 82% 10mi SW 14 mph
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Thursday, May 23		5:14am / 8:02pm 6:29pm / 3:58am
Scattered Thunderstorms/Wind	69° 62°	Windy with thunderstorms in the area. Highs in the upper 60s and lows in the low 60s. Time Temp Chill Humidity Precip Clouds Visibility Wind Weather 12am 62° 60° 97% 10% 80% 10mi SW 14 mph 1am 62° 60° 97% 10% 73% 10mi SW 15 mph 2am 63° 61° 93% 10% 72% 10mi SW 15 mph 3am 63° 61° 93% 10% 74% 10mi SW 15 mph 4am 63° 61° 97% 10% 77% 10mi SW 16 mph 5am 63° 61° 97% 10% 77% 10mi SW 16 mph 6am 63° 61° 97% 10% 71% 10mi SW 17 mph 7am 64° 62° 93% 20% 64% 10mi SW 18 mph 8am 65° 63° 90% 20% 61% 10mi SW 19 mph 9am 66° 65° 87% 20% 64% 10mi SW 19 mph 10am 68° 67° 84% 30% 71% 10mi SW 20 mph 11am 69° 68° 81% 30% 78% 10mi SSW 21 mph 12pm 69° 68° 81% 30% 81% 10mi SSW 21 mph 1pm 69° 68° 81% 40% 80% 10mi SSW 22 mph 2pm 68° 67° 81% 40% 80% 10mi SSW 22 mph 3pm 68° 67° 81% 40% 80% 10mi SSW 22 mph 4pm 67° 66° 84% 40% 81% 10mi SSW 22 mph 5pm 66° 64° 87% 40% 83% 10mi SSW 22 mph 6pm 65° 63° 90% 40% 82% 10mi SSW 21 mph 7pm 64° 62° 90% 10% 80% 10mi SSW 19 mph
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Friday, May 24		5:14am / 8:03pm 7:40pm / 4:43am
Thundershowers/Wind	67° 53°	Windy, showers with a few rumbles of thunder. Highs in the upper 60s and lows in the low 50s.
Saturday, May 25		5:13am / 8:03pm 8:48pm / 5:37am
Partly Cloudy	63° 50°	Partly cloudy. Highs in the low 60s and lows in the low 50s.
Sunday, May 26		5:12am / 8:04pm 9:48pm / 6:38am
Partly Cloudy	67° 50°	Partly cloudy. Highs in the upper 60s and lows in the low 50s.
Monday, May 27		5:12am / 8:05pm 10:41pm / 7:46am
Partly Cloudy	67° 53°	Partly cloudy. Highs in the upper 60s and lows in the low 50s.
Tuesday, May 28		5:11am / 8:06pm 11:25pm / 8:57am
Partly Cloudy	68° 54°	Mix 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
Mostly Sunny	69° 55°	Mostly sunny. Highs in the upper 60s and lows in the mid 50s.
Thursday, May 30		5:10am / 8:08pm 12:04am / 11:18am
Few Showers	69° 57°	Few showers. Highs in the upper 60s and lows in the upper 50s.