Updated 2026-09-26 09:00 local time · ZIP codes 03801
Overcast
* WHAT...Northeast winds 20 to 30 kt with gusts up to 45 kt and seas 8 to 13 ft. * WHERE...Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out 25 NM. * WHEN...Until 8 PM EDT Sunday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility.
Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions.
59°19% rain60°18% rain59°18% rain
60°17% rain61°18% rain
59°60% rain58°75% rain57°72% rain57°65% rain56°78% rain
56°73% rain56°70% rain
Rain chance reaches about 78% over the next 12 hours.
It feels like 47°F with winds near 22 mph.
61°F, 18% rain chance and 22 mph wind.
Visibility is around 6 mi; gusts may reach 48 mph.
Current temperature is 59°F, wind 22 mph, rain chance up to 78%.
UV index is 0.
New Hampshire has four distinct seasons, cold snowy winters and mild to warm summers. Mountain weather can be much colder and windier than nearby valleys.
Portsmouth is part of the Northeast weather region. The forecast point is near 43.07°N latitude and 70.76°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Overcast and 59°F in Portsmouth, NH. Today's high is 61°F with a 87% rain chance. Winds are around 22 mph with gusts near 36 mph. Relative humidity is 72%, pressure is 29.99 inHg, and visibility is about 6 miles.
Sunrise is at 06:34 AM and sunset is at 06:33 PM. Tomorrow's forecast calls for Light rain shower with a high near 58°F and a low near 56°F. The maximum rain chance is 92%.
