| NWS Forecast for: Portsmouth NH Issued by: National Weather Service Gray/Portland, ME Last Update: 7:55 pm EDT Jul 14, 2025 |  |
| Overnight: A 20 percent chance of showers before 5am. Patchy fog after 1am. Otherwise, cloudy, with a low around 68. Southwest wind around 5 mph becoming calm. Tuesday: A slight chance of showers before 7am, then a slight chance of showers after 2pm. Patchy fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 86. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 20%. 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/ |
