Portsmouth Weather

Current Conditions for Portsmouth NH and the Seacoast

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

 

Forecast

Rest Of Today: Mostly cloudy late in the morning, then becoming partly sunny. Highs in the upper 70s. Light winds becoming east around 10 mph in the afternoon.

Tonight: Partly cloudy. Areas of fog after midnight. Lows in the mid 60s. Light winds.

Monday: Partly sunny. Areas of fog in the morning. Humid with highs in the lower 80s. Light winds becoming southeast around 10 mph in the afternoon.

Monday Night: Partly cloudy with chance of showers. Areas of fog. Humid with lows in the upper 60s. South winds around 10 mph. Chance of rain 40 percent.

Tuesday: Areas of fog in the morning. Showers likely with chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. Some thunderstorms may produce heavy rainfall. Humid with highs in the mid 80s. Southwest winds 10 to 15 mph. Chance of rain 80 percent. Heat index readings in the lower 90s in the afternoon.

Tuesday Night: Showers and chance of thunderstorms. Patchy fog. Some thunderstorms may produce heavy rainfall. Lows in the upper 60s. Chance of rain 80 percent.

Wednesday: Showers likely. Highs in the lower 80s. Chance of rain 60 percent.

Wednesday Night: Mostly clear. Lows in the upper 50s.

Thursday: Mostly sunny. Highs in the lower 80s.

Thursday Night: Mostly clear. Lows around 60.

Friday: Mostly sunny. Highs in the lower 80s.

Friday Night: Mostly clear. Lows in the lower 60s.

Saturday: Partly sunny with a 30 percent chance of showers. Highs in the lower 80s.

Marine Forecast

REST OF TODAY: SE winds 5 to 10 kt. Seas 2 to 4 ft.
TONIGHT: S winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog after midnight. Vsby Variable to less than one quarter NM after midnight.
MON: S winds around 5 kt, becoming SE in the afternoon. Seas around 3 ft. Patchy fog in the morning. Vsby Variable to less than one quarter NM in the morning.
MON NIGHT: S winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. A chance of showers. Areas of fog. Vsby 1 to 3 NM.
TUE: S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. A chance of showers in the morning, then showers likely with a chance of tstms in the afternoon. Areas of fog. Some tstms may produce heavy rainfall in the afternoon. Vsby 1 to 3 NM.
TUE NIGHT: SW winds 10 to 20 kt with gusts up to 30 kt, becoming W 5 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft. Showers with a chance of tstms in the evening, then showers after midnight. Areas of fog in the evening. Patchy fog after midnight. Some tstms may produce heavy rainfall in the evening. Vsby 1 to 3 NM.
WED: NW winds 5 to 10 kt. Seas around 3 ft. Showers likely. Vsby 1 to 3 NM.
WED NIGHT: NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft.
THU: W winds 5 to 10 kt. Seas 2 to 3 ft.
THU NIGHT: SW winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms.