Cohasset Harbor (White Head) Weather

42°15'N 70°47'W

Home Harbor Resources

Current Conditions
Few Clouds
88°F
Feels like: 98°F
Wind Chill: 88°F Ceiling: Unl
Heat Index: 98°F Visibility: 10mi
Dew Point: 75°F Wind: 17mph
Humidity: 66% Direction: 220° (SW)
Pressure: 29.81" Gusts: 26mph
Reported: 18 minutes 54 seconds ago
July 17, 2018 11:50 am EST
Location: 42.346N 70.651W or 7 nautical miles NE of search location of 42.267147008152N 70.764312744141W.
Wind Direction: S (180°)
Wind Speed: 14 knots
Wind Gust: 16 knots
Significant Wave Height: 2 ft
Dominant Wave Period: 8 sec
Average Period: 3.9 sec
Mean Wave Direction: NE (54°)
Atmospheric Pressure: 29.78 in (1008.3 mb)
Pressure Tendency: -0.06 in (-2.0 mb)
Air Temperature: 75°F (24.0°C)
Dew Point: 72°F (22.0°C)
Water Temperature: 69°F (20.5°C)
July 17, 2018 11:48 am EST
Location: 42.355N 71.05W or 14 nautical miles WNW of search location of 42.267147008152N 70.764312744141W.
Atmospheric Pressure: 29.76 in (1007.8 mb)
Air Temperature: 87°F (30.3°C)
July 17, 2018 11:04 am EST
Location: 42.523N 70.566W or 18 nautical miles NNE of search location of 42.267147008152N 70.764312744141W.
Wind Direction: S (180°)
Wind Speed: 14 knots
Wind Gust: 16 knots
Significant Wave Height: 2 ft
Dominant Wave Period: 8 sec
Atmospheric Pressure: 29.76 in (1007.8 mb)
Air Temperature: 71°F (21.5°C)
Water Temperature: 66°F (18.9°C)
Tuesday, July 17
5:22am / 8:15pm 10:39am / 11:31pm
Isolated Thunderstorms
89°
69°
Day: Partly cloudy with a slight chance of thunderstorms. High 89F. Winds SSW at 10 to 20 mph. Chance of rain 30%.
Night: Thunderstorms likely. Low 69F. Winds SW at 5 to 10 mph. Chance of rain 80%.
Wednesday, July 18
5:22am / 8:15pm 11:48am / 12:01am
Mostly Sunny
79°
62°
Day: A few clouds early, otherwise mostly sunny. High 79F. Winds NNE at 5 to 10 mph.
Night: A mostly clear sky. Low 62F. Winds NNW at 5 to 10 mph.
Thursday, July 19
5:23am / 8:14pm 12:54pm / 12:00am
Sunny
76°
61°
Sunny. Highs in the mid 70s and lows in the low 60s.
Friday, July 20
5:24am / 8:13pm 1:57pm / 12:30am
Sunny
80°
62°
Sunshine. Highs in the low 80s and lows in the low 60s.
Saturday, July 21
5:25am / 8:12pm 2:59pm / 1:00am
Mostly Sunny
78°
64°
A few clouds. Highs in the upper 70s and lows in the mid 60s.
Sunday, July 22
5:26am / 8:11pm 3:59pm / 1:33am
Showers
74°
68°
Chance of showers. Highs in the mid 70s and lows in the upper 60s.
Monday, July 23
5:27am / 8:11pm 4:57pm / 2:08am
Scattered Thunderstorms
78°
69°
Scattered thunderstorms possible. Highs in the upper 70s and lows in the upper 60s.
Tuesday, July 24
5:28am / 8:10pm 5:52pm / 2:47am
AM Thunderstorms
78°
69°
Thunderstorms early. Highs in the upper 70s and lows in the upper 60s.
Wednesday, July 25
5:29am / 8:09pm 6:42pm / 3:31am
Mostly Cloudy
78°
67°
More clouds than sun. Highs in the upper 70s and lows in the upper 60s.
Thursday, July 26
5:30am / 8:08pm 7:28pm / 4:19am
Scattered Thunderstorms
76°
66°
Scattered thunderstorms possible. Highs in the mid 70s and lows in the mid 60s.
Wind Forecast
Day TuesdayWednesdayThursday
MPH 13 10 6 4 2 7 9 5 2 6 5 7
SSW
SW
SSW
SW
WNW
N
NE
ENE
NW
NNW
N
N
Radar

Home Harbor Resources

Marine Forecast
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...
Synopsis: ANZ200-180315- 1006 AM EDT Tue Jul 17 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... A cold front will approach from the west late this afternoon and move across the waters late tonight into early Wed, while weak low pressure develops along the front south of Nantucket. High pres will follow for Thu and Fri. High pres will move east of the waters Fri night and Sat. For information on possible hazardous weather beyond the 24-36 hour forecast period, please visit www.weather.gov/boston and follow the Current Hazards link above the map on the left. $$
This Afternoon
SSW wind around 13 kt, with gusts as high as 23 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Some storms could be severe, with damaging winds, heavy rain, and frequent lightning. Seas around 2 ft.
Tonight
SSW wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Showers and thunderstorms, mainly before 1am. Some of the storms could produce gusty winds and heavy rain. Seas 1 to 2 ft.
Wednesday
NNW wind 6 to 8 kt becoming NE in the afternoon. A slight chance of showers and thunderstorms between 9am and 10am. Seas around 1 ft.
Wednesday Night
Variable winds less than 5 kt becoming NNW 5 to 7 kt in the evening. Mostly clear. Seas around 1 ft.
Thursday
N wind 5 to 7 kt becoming ENE in the afternoon. Sunny. Seas around 2 ft.
Thursday Night
Variable winds 5 kt or less. Clear. Seas around 1 ft.
Friday
Variable winds 5 kt or less. Sunny. Seas around 1 ft.
Friday Night
S wind 5 to 7 kt becoming SSW after midnight. Mostly clear. Seas around 1 ft.
Saturday
Variable winds less than 5 kt becoming SE 5 to 8 kt in the morning. Sunny. 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.