Coastal Flood Advisory COASTAL FLOOD ADVISORY - Portsmouth Seacoast  - Rockingham
High Surf Advisory HIGH SURF ADVISORY - Portsmouth Seacoast  - Rockingham

High pressure keeps fair weather is place through today, with rain showers arriving across southern zones tonight. Deteriorating marine and surf conditions later today and tonight as northeast winds increase. A strong nor'easter will loop south of New England this weekend. A prolonged period of soaking rain, gusty winds, high surf, and coastal flooding are likely into early next week.
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Updated: @ 09/25/2026 13:20 - next update at 13:25  
Summary / Temperature Wind Rain Outlook
Clear Clear
Currently: 71.2, Max: 71.2, Min: 36.7 71.2°F
Warmer 2.2°F than last hour.

Comfortable

Feels like: 71°F

24-hr difference
5.5°FWarmer 5.5°F than yesterday at this time.
  Today Yesterday
High: 71.2°F
13:09
68.7°F
15:31
Low: 36.7°F
06:59
34°F
06:51
 Wind from N N
1
Gust:
4 mph
0 Bft - Calm
Today: 11 mph 11:40
Gust Month: 16 mph September 14
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
Storm Rain: 0 in
This Month: 4.03 in
Season Total: 25.11 in
11 rain days in September.
Tonight

Tonight: Chance Light Rain
Chance Light Rain
Humidity & Barometer Almanac Moon
Humidity: 49 % Decreased 5.0% since last hour.
Dew Point: 50.9°F Decreased 0.7°F since last hour.
Barometer: 30.09 inHg Falling 0.02  inHg/hr
Baro Trend: Steady
Sunrise: 06:37
Sunset: 18:39
Moonset: 05:20
Moonrise: 18:03
Full Moon
Full Moon, Moon at 13 days in cycle
99%
Illuminated
UV Index Solar Radiation
   5.0     Medium 
High: 7.0 @ 11:50
581 W/m2 (83 %)
High: 816 @  12:38
 NWS Weather Forecast  - Outlook: Today & Tonight
Today

Today: Mostly Sunny
Mostly Sunny

Hi 68 °F
NWS forecast: Mostly sunny, with a high near 68. North wind 0 to 10 mph.
 
Tonight

Tonight: Chance Light Rain
Chance Light Rain

Lo 50 °F
NWS forecast: A chance of rain after 11pm. Cloudy, with a low around 50. Northeast wind 5 to 10 mph. Chance of precipitation is 30%.