| NWS Forecast for: Portsmouth NH Issued by: National Weather Service Gray/Portland, ME Last Update: 6:54 am EDT Oct 6, 2026 |  |
| Today: Sunny, with a high near 58. West wind around 15 mph, with gusts as high as 30 mph. Tonight: Areas of frost after 5am. Otherwise, clear, with a low around 37. West wind around 5 mph becoming calm in the evening. Wednesday: Areas of frost before 8am. Otherwise, sunny, with a high near 64. Light southwest wind becoming south 5 to 10 mph in the morning. Wednesday Night: Mostly clear, with a low around 51. Southwest wind around 5 mph. Thursday: Sunny, with a high near 72. Southwest wind 5 to 10 mph. Thursday Night: Mostly clear, with a low around 48. Friday: Sunny, with a high near 65. Friday Night: Mostly clear, with a low around 44. Saturday: Sunny, with a high near 64. Saturday Night: Mostly clear, with a low around 44. Sunday: Mostly sunny, with a high near 67. Sunday Night: Mostly cloudy, with a low around 52. Columbus Day: Partly sunny, with a high near 69. | |
| Portsmouth NH 43.07°N 70.78°W (Elev. 33 ft) | |
Visit your local NWS office at: https://www.weather.gov/gyx/ |
