Portsmouth Harbor Weather

43°5'N 70°45'W
Current Conditions
Clear
24°F
Feels like: 17°F
Wind Chill: 17°F Ceiling: Unl
Heat Index: 24°F Visibility: 10mi
Dew Point: 11°F Wind: 6mph
Humidity: 58% Direction: 330° (NNW)
Pressure: 29.86" Gusts: -
Reported: 24 minutes 2 seconds ago
April 1, 2015 5:00 am EDT
Location: 42.967N 70.623W or 5 nautical miles SE of search location of 43.03175685184N 70.706634521484W.
Wind Direction: N (10°)
Wind Speed: 15 knots
Wind Gust: 18 knots
Atmospheric Pressure: 29.84 in (1010.5 mb)
Pressure Tendency: +0.05 in (+1.7 mb)
Air Temperature: 31°F (-0.4°C)
Dew Point: 10°F (-12.3°C)
April 1, 2015 3:45 am EDT
Location: 43.059N 70.83W or 6 nautical miles WNW of search location of 43.03175685184N 70.706634521484W.
Wind Speed: 0 knots
Air Temperature: 24°F (-4.7°C)
Dew Point: 14°F (-9.9°C)
April 1, 2015 4:04 am EDT
Location: 43.181N 70.428W or 15 nautical miles NE of search location of 43.03175685184N 70.706634521484W.
Wind Direction: NNE (20°)
Wind Speed: 16 knots
Wind Gust: 19 knots
Significant Wave Height: 3 ft
Dominant Wave Period: 4 sec
Atmospheric Pressure: 29.80 in (1009.1 mb)
Air Temperature: 33°F (0.4°C)
Water Temperature: 37°F (2.6°C)
Visibility: 1.6 nmi
Wednesday, April 1
6:25am / 7:09pm 4:40pm / 4:59am
Sunny
43°
27°
Day: Sunny. High 43F. Winds NW at 10 to 15 mph.
Night: A few passing clouds. Low 27F. Winds WNW at 5 to 10 mph.
Thursday, April 2
6:23am / 7:10pm 5:38pm / 5:27am
Cloudy
46°
42°
Day: Overcast. High 46F. Winds S at 10 to 15 mph.
Night: Partly cloudy in the evening. Increasing clouds with periods of showers after midnight. Low 42F. Winds SSW at 10 to 15 mph. Chance of rain 40%.
Friday, April 3
6:21am / 7:11pm 6:35pm / 5:55am
Showers
60°
42°
Showers. Highs in the low 60s and lows in the low 40s.
Saturday, April 4
6:19am / 7:12pm 7:34pm / 6:23am
Rain/Wind
46°
29°
Windy with rain at times. Highs in the mid 40s and lows in the upper 20s.
Sunday, April 5
6:18am / 7:13pm 8:32pm / 6:53am
Mostly Cloudy
42°
28°
Considerable cloudiness. Highs in the low 40s and lows in the upper 20s.
Monday, April 6
6:16am / 7:14pm 9:32pm / 7:26am
Partly Cloudy
41°
33°
Partly cloudy. Highs in the low 40s and lows in the low 30s.
Tuesday, April 7
6:14am / 7:16pm 10:30pm / 8:01am
Rain/Snow Showers
43°
37°
Mix of rain and snow showers. Highs in the low 40s and lows in the upper 30s.
Wednesday, April 8
6:13am / 7:17pm 11:28pm / 8:42am
Rain
46°
30°
Mainly cloudy and rainy. Highs in the mid 40s and lows in the low 30s.
Thursday, April 9
6:11am / 7:18pm 11:59pm / 9:28am
Partly Cloudy
41°
34°
Mix of sun and clouds. Highs in the low 40s and lows in the mid 30s.
Friday, April 10
6:09am / 7:19pm 12:23am / 10:19am
PM Light Rain
43°
36°
Afternoon light rain. Highs in the low 40s and lows in the mid 30s.
Wind Forecast
Day WednesdayThursday
MPH 5 8 11 12 6 4 3 4 9 10 10 9
NNW
NNW
NW
NW
NW
W
WSW
SSW
SSE
SSE
SSW
SSW
Radar
Marine Forecast
...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY...
Synopsis: LOW PRESSURE PASSING BY TO THE EAST WILL BRING NORTHWEST WINDS TO THE WATERS TODAY. HIGH PRESSURE WILL CREST OVER THE WATERS THURSDAY MORNING WITH SOUTHWEST FLOW DEVELOPING DURING THE DAY. A COLD FRONT WILL MOVE INTO THE GULF OF MAINE THURSDAY NIGHT AND BECOME STATIONARY ON FRIDAY. LOW PRESSURE WILL MOVE NORTHEAST ALONG THIS FRONT ON SATURDAY. AS THE LOW MOVES AWAY HIGH PRESSURE WILL BUILD IN BEHIND IT.
Today
N wind around 10 kt becoming NW in the afternoon. Sunny. Seas around 2 ft.
Tonight
WNW wind 5 to 10 kt. Mostly clear. Seas around 1 ft.
Thursday
W wind 5 to 10 kt becoming S in the afternoon. Partly sunny. Seas around 1 ft.
Thursday Night
SSW wind 10 to 15 kt. A chance of rain after 2am. Seas 2 to 3 ft.
Friday
SW wind 5 to 10 kt. A chance of showers. Seas around 2 ft.
Friday Night
Variable winds 5 kt or less. Showers likely, mainly after 1am. Seas around 1 ft.
Saturday
Variable winds less than 5 kt becoming WNW 15 to 20 kt in the morning. Winds could gust as high as 30 kt. A chance of showers before noon. Seas 2 to 3 ft.
Saturday Night
WNW wind 15 to 20 kt decreasing to 10 to 15 kt after midnight. Winds could gust as high as 25 kt. Partly cloudy. Seas 1 to 2 ft.
Sunday
WSW wind around 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas around 3 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.