7-Day Forecast 43.05°N 70.78°W (Text-Only)
NWS Forecast for: Portsmouth NH
Issued by: National Weather Service Gray/Portland, ME
Last Update: 1:50 pm EDT Jul 14, 2025


Tonight: Showers likely and possibly a thunderstorm before 7pm, then scattered showers and thunderstorms between 7pm and 11pm, then isolated showers after 11pm. Mostly cloudy, with a low around 69. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday: A 20 percent chance of showers after 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 86. Calm wind becoming southeast around 5 mph in the afternoon.

Tuesday Night: Patchy fog after midnight. Otherwise, mostly clear, with a low around 67. South wind around 5 mph becoming calm.

Wednesday: Mostly sunny, with a high near 89. Calm wind becoming south around 5 mph in the afternoon.

Wednesday Night: Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 71. Southwest wind around 5 mph.

Thursday: A 40 percent chance of showers and thunderstorms after 2pm. Patchy fog before 7am. Otherwise, partly sunny, with a high near 87.

Thursday Night: A 30 percent chance of showers and thunderstorms before 8pm. Patchy fog after 2am. Otherwise, partly cloudy, with a low around 71.

Friday: A 30 percent chance of showers and thunderstorms after 2pm. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 87.

Friday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 65.

Saturday: Mostly sunny, with a high near 81.

Saturday Night: Partly cloudy, with a low around 64.

Sunday: A 30 percent chance of showers. Partly sunny, with a high near 81.

Sunday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 64.

Monday: Mostly sunny, with a high near 81.



Portsmouth NH
 43.05°N 70.78°W (Elev. 49 ft)

Visit your local NWS office at: https://www.weather.gov/gyx/