| National Weather Service Forecast for:
Portsmouth NH Issued by: National Weather Service Gray/Portland, ME |
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| Updated: 12:38 am EST Dec 5, 2025 | ||||||||||||||||||
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| Overnight |
Mostly clear, with a low around 10. Wind chill values as low as -1. West wind 5 to 10 mph. |
| Friday |
Sunny, with a high near 26. West wind around 5 mph becoming southwest in the afternoon. |
| Friday Night |
Partly cloudy, with a low around 15. Calm wind. |
| Saturday |
A chance of snow showers, mixing with rain after 1pm, then gradually ending. Mostly cloudy, with a high near 37. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 40%. |
| Saturday Night |
Partly cloudy, with a low around 23. West wind around 5 mph. |
| Sunday |
Partly sunny, with a high near 37. |
| Sunday Night |
A 50 percent chance of snow after 10pm. Mostly cloudy, with a low around 17. |
| Monday |
A 30 percent chance of snow before 7am. Mostly sunny, with a high near 26. |
| Monday Night |
Mostly clear, with a low around 6. |
| Tuesday |
Partly sunny, with a high near 31. |
| Tuesday Night |
A 50 percent chance of snow. Mostly cloudy, with a low around 22. |
| Wednesday |
Mostly cloudy, with a high near 44. |
| Wednesday Night |
Rain likely. Cloudy, with a low around 32. Chance of precipitation is 60%. |
| Thursday |
A 40 percent chance of rain. Mostly cloudy, with a high near 42. |
Forecast from NOAA-NWS for Portsmouth NH.
