| National Weather Service Forecast for:
Portsmouth NH Issued by: National Weather Service Gray/Portland, ME |
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| Updated: 12:45 am EST Feb 2, 2026 | ||||||||||||||||||
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| Overnight |
Mostly cloudy, with a low around 7. Wind chill values as low as -1. Northwest wind around 5 mph. |
| Monday |
Partly sunny, then gradually becoming sunny, with a high near 29. Wind chill values as low as -3. Northwest wind around 5 mph. |
| Monday Night |
Mostly clear, with a low around 4. Northwest wind around 5 mph becoming calm. |
| Tuesday |
Sunny, with a high near 30. Calm wind. |
| Tuesday Night |
Partly cloudy, with a low around 12. Calm wind. |
| Wednesday |
Mostly sunny, with a high near 32. |
| Wednesday Night |
Mostly clear, with a low around 9. |
| Thursday |
Mostly sunny, with a high near 27. |
| Thursday Night |
Mostly clear, with a low around 5. |
| Friday |
Partly sunny, with a high near 28. |
| Friday Night |
A 40 percent chance of snow. Mostly cloudy, with a low around 6. |
| Saturday |
Partly sunny, with a high near 15. |
| Saturday Night |
Partly cloudy, with a low around -1. |
| Sunday |
Mostly sunny, with a high near 16. |
Forecast from NOAA-NWS for Portsmouth NH.
