Portsmouth Harbor Weather

43°5'N 70°45'W
Current Conditions
Broken Clouds
86°F
Feels like: 89°F
Wind Chill: 86°F Ceiling: 25000ft
Heat Index: 89°F Visibility: 10mi
Dew Point: 67°F Wind: 5mph
Humidity: 52% Direction: 270° (W)
Pressure: 29.84" Gusts: -
Reported: 10 minutes 42 seconds ago
September 3, 2015 12:00 pm EDT
Location: 42.967N 70.623W or 5 nautical miles SE of search location of 43.03175685184N 70.706634521484W.
Wind Direction: NNE (30°)
Wind Speed: 4 knots
Wind Gust: 5 knots
Atmospheric Pressure: 29.85 in (1011.0 mb)
Pressure Tendency: +0.01 in (+0.3 mb)
Air Temperature: 76°F (24.2°C)
Dew Point: 64°F (18.0°C)
September 3, 2015 11:45 am EDT
Location: 43.059N 70.83W or 6 nautical miles WNW of search location of 43.03175685184N 70.706634521484W.
Wind Direction: W (270°)
Wind Speed: 4 knots
Atmospheric Pressure: 29.88 in (1012.0 mb)
Air Temperature: 82°F (27.9°C)
Dew Point: 71°F (21.6°C)
September 3, 2015 12:04 pm EDT
Location: 43.181N 70.428W or 15 nautical miles NE of search location of 43.03175685184N 70.706634521484W.
Wind Speed: 0 knots
Wind Gust: 2 knots
Significant Wave Height: 1 ft
Dominant Wave Period: 8 sec
Atmospheric Pressure: 29.83 in (1010.3 mb)
Air Temperature: 73°F (22.9°C)
Water Temperature: 70°F (21.1°C)
Visibility: 1.6 nmi
Thursday, September 3
6:08am / 7:14pm 10:27pm / 11:52am
Cloudy
85°
61°
Day: Generally cloudy. A stray shower or thunderstorm is possible. High around 85F. Winds light and variable.
Night: Cloudy. A stray shower or thunderstorm is possible. Low 61F. NNE winds at less than 5 mph, increasing to 10 to 20 mph.
Friday, September 4
6:10am / 7:13pm 11:13pm / 12:58pm
Partly Cloudy
70°
53°
Day: Some clouds in the morning will give way to mainly sunny skies for the afternoon. High around 70F. Winds NE at 10 to 20 mph.
Night: A mostly clear sky. Low 53F. Winds light and variable.
Saturday, September 5
6:11am / 7:11pm 11:59pm / 1:59pm
Sunny
78°
57°
Sunny. Highs in the upper 70s and lows in the upper 50s.
Sunday, September 6
6:12am / 7:09pm 12:02am / 2:54pm
Sunny
83°
60°
Abundant sunshine. Highs in the low 80s and lows in the low 60s.
Monday, September 7
6:13am / 7:07pm 12:54am / 3:43pm
Sunny
87°
64°
Sunshine. Highs in the upper 80s and lows in the mid 60s.
Tuesday, September 8
6:14am / 7:05pm 1:49am / 4:25pm
Sunny
88°
66°
Abundant sunshine. Highs in the upper 80s and lows in the mid 60s.
Wednesday, September 9
6:15am / 7:04pm 2:45am / 5:04pm
AM Clouds/PM Sun
84°
63°
Clouds giving way to sun . Highs in the mid 80s and lows in the low 60s.
Thursday, September 10
6:16am / 7:02pm 3:43am / 5:38pm
PM Showers
82°
61°
Chance of afternoon showers. Highs in the low 80s and lows in the low 60s.
Friday, September 11
6:17am / 7:00pm 4:41am / 6:09pm
AM Showers
79°
60°
Showers ending by midday. Highs in the upper 70s and lows in the low 60s.
Saturday, September 12
6:18am / 6:58pm 5:38am / 6:38pm
Mostly Sunny
76°
60°
More sun than clouds. Highs in the mid 70s and lows in the low 60s.
Wind Forecast
Day ThursdayFridaySaturday
MPH 6 4 2 12 14 15 13 7 1 1 2 2
ESE
NE
NNW
NE
NNE
NNE
NE
ENE
NE
NNW
NW
NNW
Radar
Marine Forecast
Synopsis: A COLD FRONT WILL DROP SOUTH THROUGH THE REGION TODAY AND WILL PUSH OFFSHORE THIS EVENING. HIGH PRES WILL BUILD SOUTH FROM CANADA FRIDAY THROUGH SAT. HIGH PRES WILL SHIFT OFFSHORE SAT NIGHT AND WILL REMAIN ANCHORED OFF THE COAST THROUGH MON. A COLD FRONT WILL CROSS THE REGION ON TUE.
This Afternoon
E wind around 10 kt. A chance of showers and thunderstorms, mainly after 5pm. Seas around 1 ft.
Tonight
E wind 5 to 8 kt becoming NE 7 to 10 kt after midnight. A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Seas around 1 ft.
Friday
ENE wind 10 to 15 kt, with gusts as high as 20 kt. Sunny. Seas 3 to 4 ft.
Friday Night
Variable winds 5 kt or less. Clear. Seas around 2 ft.
Saturday
Variable winds 5 kt or less. Sunny. Seas around 2 ft.
Saturday Night
Variable winds 5 kt or less. Clear. Seas around 2 ft.
Sunday
Variable winds 5 kt or less. Sunny. Seas 1 to 2 ft.
Sunday Night
S wind 5 to 10 kt becoming SW after midnight. Mostly clear. Seas around 2 ft.
Labor Day
SSW wind 5 to 10 kt. Sunny. Seas around 2 ft.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.

*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.