Portsmouth Weather

Current Conditions for Portsmouth NH and the Seacoast

Longitude W70.8 – Latitude N43.1 • Rockingham County, New Hampshire, USA

 

Forecast

Today: Mostly sunny. Highs in the upper 70s. South winds 15 to 20 mph. Gusts up to 45 mph this afternoon.

Tonight: Partly cloudy. Lows in the mid 50s. Southwest winds 10 to 15 mph. Gusts up to 40 mph, decreasing to 25 mph after midnight.

Wednesday: Mostly cloudy. A slight chance of rain in the morning, then rain likely in the afternoon. Highs in the upper 60s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent.

Wednesday Night: Rain. Lows in the upper 40s. South winds 10 to 15 mph, becoming southwest after midnight. Chance of rain 80 percent.

Thursday: Partly sunny with a 40 percent chance of showers. Highs in the lower 60s. Light and variable winds.

Thursday Night: Partly cloudy. Lows in the lower 40s.

Friday: Partly sunny. Highs around 60.

Friday Night: Mostly clear. Lows in the lower 40s.

Saturday: Partly sunny. A chance of showers in the afternoon. Highs in the upper 50s. Chance of rain 30 percent.

Saturday Night: Mostly cloudy in the evening, then becoming partly cloudy. A 30 percent chance of showers. Lows in the mid 40s.

Sunday: Partly sunny. Highs in the mid 60s.

Sunday Night: Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the upper 40s. Chance of rain 30 percent.

Monday: Mostly cloudy with a 50 percent chance of showers. Highs in the lower 60s.

Marine Forecast

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY: S winds 10 to 15 kt, increasing to 15 to 20 kt late this morning and afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 6 seconds.
TONIGHT: S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 7 seconds.
WED: S winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: S 7 ft at 7 seconds. Rain likely in the afternoon.
WED NIGHT: S winds 20 to 25 kt, becoming SW 15 to 20 kt after midnight. Seas 5 to 7 ft. Wave Detail: S 7 ft at 7 seconds. Rain.
THU: W winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: S 5 ft at 7 seconds. A chance of showers.
THU NIGHT: SW winds 5 to 10 kt, becoming NW with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds.
FRI: W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
FRI NIGHT: W winds around 10 kt. Seas 2 to 3 ft.
SAT: SW winds 5 to 10 kt, becoming S 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 3 to 4 ft.
SAT NIGHT: S winds 15 to 20 kt with gusts up to 30 kt, becoming SW 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 4 ft. A chance of showers.