| National Weather Service Forecast for:
Portsmouth NH Issued by: National Weather Service Gray/Portland, ME |
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| Updated: 1:29 pm EDT Oct 6, 2026 | ||||||||||||||||||
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| This Afternoon |
Sunny, with a high near 58. West wind around 15 mph, with gusts as high as 25 mph. |
| Tonight |
Clear, with a low around 37. Northwest wind around 5 mph becoming calm in the evening. |
| Wednesday |
Areas of frost between 7am and 8am. Otherwise, sunny, with a high near 64. Light southwest wind increasing to 5 to 10 mph in the morning. |
| Wednesday Night |
Partly cloudy, 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 |
A 30 percent chance of showers. Partly sunny, with a high near 69. |
Forecast from NOAA-NWS for Portsmouth NH.
