Portsmouth Harbor Weather

43°5'N 70°45'W
Current Conditions
Few Clouds
26°F
Feels like: 15°F
Wind Chill: 15°F Ceiling: Unl
Heat Index: 26°F Visibility: 10mi
Dew Point: 1°F Wind: 14mph
Humidity: 34% Direction: 290° (WNW)
Pressure: 30.25" Gusts: 21mph
Reported: 33 minutes 21 seconds ago
December 10, 2016 3:00 pm EST
Location: 42.967N 70.623W or 5 nautical miles SE of search location of 43.03175685184N 70.706634521484W.
Wind Direction: NW (320°)
Wind Speed: 17 knots
Wind Gust: 21 knots
Atmospheric Pressure: 30.26 in (1024.6 mb)
Pressure Tendency: +0.02 in (+0.8 mb)
Air Temperature: 26°F (-3.3°C)
Dew Point: 5°F (-15.0°C)
December 10, 2016 2:04 pm EST
Location: 43.181N 70.428W or 15 nautical miles NE of search location of 43.03175685184N 70.706634521484W.
Wind Direction: WNW (290°)
Wind Speed: 16 knots
Wind Gust: 19 knots
Significant Wave Height: 2 ft
Dominant Wave Period: 3 sec
Atmospheric Pressure: 30.23 in (1023.7 mb)
Air Temperature: 27°F (-2.8°C)
Water Temperature: 49°F (9.5°C)
December 10, 2016 2:54 pm EST
Location: 43.32N 70.563W or 18 nautical miles NNE of search location of 43.03175685184N 70.706634521484W.
Wind Direction: WNW (300°)
Wind Speed: 9 knots
Wind Gust: 14 knots
Atmospheric Pressure: 30.26 in (1024.7 mb)
Air Temperature: 26°F (-3.6°C)
Water Temperature: 40°F (4.6°C)
Saturday, December 10
7:03am / 4:07pm 2:02pm / 2:35am
Mostly Sunny
27°
16°
Day:
Night: Clear skies. Low 16F. Winds WNW at 5 to 10 mph.
Sunday, December 11
7:04am / 4:08pm 2:43pm / 3:48am
Partly Cloudy
31°
27°
Day: Mostly sunny skies during the morning hours will become overcast in the afternoon. High 31F. Winds WSW at 5 to 10 mph.
Night: Snow showers in the evening will give way to a mixture of rain and snow late at night. Low 27F. Winds S at 10 to 15 mph. Chance of precip 100%. Snow accumulating 1 to 3 inches.
Monday, December 12
7:05am / 4:08pm 3:28pm / 5:02am
AM Rain
39°
29°
Periods of rain early. Highs in the upper 30s and lows in the upper 20s.
Tuesday, December 13
7:06am / 4:08pm 4:20pm / 6:15am
Partly Cloudy
39°
25°
Times of sun and clouds. Highs in the upper 30s and lows in the mid 20s.
Wednesday, December 14
7:06am / 4:08pm 5:19pm / 7:22am
Partly Cloudy
33°
18°
Partly cloudy. Highs in the low 30s and lows in the upper teens.
Thursday, December 15
7:07am / 4:08pm 6:23pm / 8:23am
Partly Cloudy
23°
Partly cloudy. Highs in the low 20s and lows in the upper single digits.
Friday, December 16
7:08am / 4:09pm 7:29pm / 9:14am
Sunny
21°
14°
Abundant sunshine. Highs in the low 20s and lows in the mid teens.
Saturday, December 17
7:09am / 4:09pm 8:36pm / 9:59am
Snow Showers
32°
27°
Snow showers. Highs in the low 30s and lows in the upper 20s.
Sunday, December 18
7:09am / 4:09pm 9:40pm / 10:37am
Showers
35°
26°
Showers. Highs in the mid 30s and lows in the mid 20s.
Monday, December 19
7:10am / 4:10pm 10:43pm / 11:10am
Partly Cloudy
30°
16°
Times of sun and clouds. Highs in the low 30s and lows in the mid teens.
Wind Forecast
Day SaturdaySundayMonday
MPH 13 8 6 6 5 5 6 5 5 7 13 9
WNW
NW
WNW
WNW
W
WSW
SW
SSW
S
SE
SE
WSW
Radar
Marine Forecast
Synopsis: HIGH PRESSURE BUILDS ACROSS THE WATERS TONIGHT AND SHIFTS TO THE EAST ON SUNDAY. LOW PRESSURE WILL MOVE OUT OF THE GREAT LAKES AND TRACK THROUGH THE GULF OF MAINE ON MONDAY.
Tonight
WNW wind 12 to 15 kt decreasing to 10 to 13 kt after midnight. Mostly clear. Seas around 1 ft.
Sunday
WSW wind 5 to 10 kt. Sunny. Seas 1 ft or less.
Sunday Night
Variable winds 5 kt or less. Snow, mainly after midnight. Seas around 1 ft.
Monday
SE wind around 10 kt becoming WSW in the afternoon. Rain and snow, becoming all rain after 3pm. Seas 2 to 3 ft.
Monday Night
W wind 10 to 15 kt. A chance of rain before 8pm. Seas around 2 ft.
Tuesday
WNW wind 10 to 15 kt. Mostly sunny. Seas 1 to 2 ft.
Tuesday Night
WSW wind around 10 kt. Partly cloudy. Seas around 1 ft.
Wednesday
WSW wind around 10 kt. A chance of snow showers. Seas 1 to 2 ft.
Wednesday Night
WSW wind around 10 kt becoming WNW after midnight. A chance of snow showers. Seas 1 to 2 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.