| NWS Forecast for: Portsmouth NH Issued by: National Weather Service Gray/Portland, ME Last Update: 12:51 am EDT Oct 9, 2026 | |
| Overnight: Mostly clear, with a low around 48. Southwest wind around 5 mph. Friday: Sunny, with a high near 67. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph. Friday Night: Mostly clear, with a low around 43. West wind 5 to 10 mph, with gusts as high as 25 mph. Saturday: Sunny, with a high near 62. Northwest wind 5 to 10 mph. Saturday Night: Partly cloudy, with a low around 44. Calm wind. Sunday: Partly sunny, with a high near 68. Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 60%. Columbus Day: Showers likely, mainly before 7am. Mostly cloudy, with a high near 68. Chance of precipitation is 60%. Monday Night: Mostly cloudy, with a low around 52. Tuesday: A 30 percent chance of showers after noon. Partly sunny, with a high near 66. Tuesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 48. Wednesday: Mostly sunny, with a high near 60. Wednesday Night: Partly cloudy, with a low around 42. Thursday: Mostly sunny, with a high near 59. | |
| Portsmouth NH 43.07°N 70.78°W (Elev. 33 ft) | |
Visit your local NWS office at: https://www.weather.gov/gyx/ |