Portland Harbor Weather

43°39'N 70°15'W

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Current Conditions
Scattered Clouds
78°F
Feels like: 78°F
Wind Chill: 78°F Ceiling: Unl
Heat Index: 78°F Visibility: 10mi
Dew Point: 45°F Wind: 12mph
Humidity: 31% Direction: 330° (NNW)
Pressure: 29.91" Gusts: -
Reported: 5 minutes 57 seconds ago
August 16, 2017 4:30 pm EST
Location: 43.656N 70.246W or 0 nautical miles NE of search location of 43.653714N 70.248728W.
Atmospheric Pressure: 29.90 in (1012.4 mb)
Air Temperature: 77°F (24.8°C)
Water Temperature: 58°F (14.5°C)
August 16, 2017 3:50 pm EST
Location: 43.525N 70.141W or 9 nautical miles SSE of search location of 43.653714N 70.248728W.
Wind Direction: NNW (340°)
Wind Speed: 8 knots
Wind Gust: 12 knots
Significant Wave Height: 2 ft
Dominant Wave Period: 13 sec
Average Period: 4.9 sec
Mean Wave Direction: S (178°)
Atmospheric Pressure: 29.88 in (1011.8 mb)
Pressure Tendency: -0.01 in (-0.5 mb)
Air Temperature: 70°F (21.2°C)
Dew Point: 57°F (13.7°C)
Water Temperature: 65°F (18.1°C)
August 16, 2017 4:00 pm EST
Location: 43.337N 70.549W or 23 nautical miles SW of search location of 43.653714N 70.248728W.
Wind Direction: WNW (290°)
Wind Speed: 6 knots
Air Temperature: 80°F (26.8°C)
Dew Point: 51°F (10.8°C)
Wednesday, August 16
5:47am / 7:43pm 12:26am / 3:18pm
Partly Cloudy
82°
54°
Day:
Night: Partly cloudy skies. Low 54F. Winds WNW at 10 to 15 mph.
Thursday, August 17
5:48am / 7:41pm 1:15am / 4:22pm
Partly Cloudy
81°
58°
Day: Partly cloudy. High 81F. Winds W at 10 to 15 mph.
Night: Partly cloudy skies. Low 58F. Winds NNW at 5 to 10 mph.
Friday, August 18
5:49am / 7:39pm 2:11am / 5:22pm
Rain
71°
66°
Cloudy with rain. Highs in the low 70s and lows in the mid 60s.
Saturday, August 19
5:50am / 7:38pm 3:14am / 6:14pm
PM Thunderstorms
78°
64°
Showers and thunderstorms late. Highs in the upper 70s and lows in the mid 60s.
Sunday, August 20
5:51am / 7:36pm 4:22am / 7:00pm
Partly Cloudy
82°
62°
Mix of sun and clouds. Highs in the low 80s and lows in the low 60s.
Monday, August 21
5:52am / 7:35pm 5:32am / 7:39pm
Sunny
82°
65°
Sunny. Highs in the low 80s and lows in the mid 60s.
Tuesday, August 22
5:53am / 7:33pm 6:42am / 8:14pm
Mostly Sunny
83°
67°
More sun than clouds. Highs in the low 80s and lows in the upper 60s.
Wednesday, August 23
5:55am / 7:31pm 7:51am / 8:45pm
Scattered Thunderstorms
79°
62°
Scattered thunderstorms possible. Highs in the upper 70s and lows in the low 60s.
Thursday, August 24
5:56am / 7:30pm 8:56am / 9:15pm
Partly Cloudy
78°
58°
Partly cloudy. Highs in the upper 70s and lows in the upper 50s.
Friday, August 25
5:57am / 7:28pm 10:00am / 9:44pm
Mostly Sunny
76°
57°
A few clouds. Highs in the mid 70s and lows in the upper 50s.
Wind Forecast
Day WednesdayThursdayFriday
MPH 11 6 5 3 8 11 8 3 2 2 6 8
NNW
NW
WNW
W
W
W
WNW
N
NNW
NE
E
SE
Radar
Marine Forecast
Synopsis: ANZ100-170915- 306 PM EDT Wed Aug 16 2017 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... High pressure will build over the waters through Thursday before moving east of the area Thursday night. This will allow a warm front to move through the waters Friday before a cold front crosses the waters on Saturday. High pressure builds back over the waters for Sunday and Monday of next week. $$
Tonight
WNW wind 5 to 10 kt. Clear. Seas 1 ft or less.
Thursday
W wind 5 to 8 kt increasing to 7 to 10 kt in the afternoon. Sunny. Seas 1 ft or less.
Thursday Night
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Friday
E wind 5 to 10 kt becoming SSE in the afternoon. Showers likely, mainly after 3pm. Seas around 1 ft.
Friday Night
SSE wind around 10 kt. Showers likely, mainly before 3am. Patchy fog. Seas 2 to 3 ft.
Saturday
S wind 5 to 10 kt. A chance of showers before 2pm, then scattered thunderstorms after 2pm. Seas around 2 ft.
Saturday Night
Variable winds 5 kt or less. Scattered thunderstorms before 8pm, then a chance of showers after 8pm. Seas around 3 ft.
Sunday
W wind 5 to 10 kt. Mostly sunny. Seas around 2 ft.
Sunday Night
Variable winds 5 kt or less. Mostly clear. 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.