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Portsmouth, NH 03801 Weather

Today: Sunny, high 69°F, low 53°F. Hourly and 10-day forecast from the National Weather Service. Times are local (EDT).

Portsmouth, NH 03801 current weather

58°F

Sunny

Forecast for this hour. No recent report from a nearby station.

H 69° / L 53°

  • No rain expected in the next 12 hours

No recent station report. NWS hourly forecast updated 10/29/2026, 3:11 AM PT

Hourly forecast

NWS, updated 10/29/2026, 3:11 AM PT

  1. Now58°
  2. 12 PM62°
  3. 1 PM66°
  4. 2 PM67°
  5. 3 PM68°
  6. 4 PM68°
  7. 5 PM66°
  8. 6 PM64°
  9. 7 PM61°
  10. 8 PM56°
  11. 9 PM55°
  12. 10 PM54°
  13. 11 PM54°
  14. 12 AM54°Fri
  15. 1 AM54°
  16. 2 AM54°
  17. 3 AM54°
  18. 4 AM54°
  19. 5 AM54°
  20. 6 AM53°
  21. 7 AM53°
  22. 8 AM53°
  23. 9 AM56°
  24. 10 AM60°
  25. 11 AM64°
  26. 12 PM65°
  27. 1 PM66°
  28. 2 PM66°
  29. 3 PM65°
  30. 4 PM63°
  31. 5 PM61°
  32. 6 PM56°
  33. 7 PM53°
  34. 8 PM48°
  35. 9 PM47°
  36. 10 PM46°
  37. 11 PM44°
  38. 12 AM43°Sat
  39. 1 AM42°
  40. 2 AM41°
  41. 3 AM40°
  42. 4 AM39°
  43. 5 AM38°
  44. 6 AM37°
  45. 7 AM36°
  46. 8 AM37°
  47. 9 AM41°
  48. 10 AM45°

10-day forecast

Tap a day for details

  • Today10/29Low 53°High 69°

    Today: Sunny, with a high near 69. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Tonight: Partly cloudy, with a low around 53. Southwest wind around 10 mph.

    Sunny
  • Fri10/30Low 36°High 67°

    Friday: Sunny. High near 67, with temperatures falling to around 61 in the afternoon. West wind 10 to 15 mph, with gusts as high as 30 mph.

    Friday Night: Mostly clear, with a low around 36. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Sunny
  • Sat10/31Low 27°High 55°

    Saturday: Sunny, with a high near 55. Northwest wind 5 to 10 mph.

    Saturday Night: Mostly clear, with a low around 27.

    Sunny
  • Sun11/1Low 37°High 60°

    Sunday: Sunny, with a high near 60.

    Sunday Night: Partly cloudy, with a low around 37.

    Sunny
  • Mon11/2Low 40°High 66°

    Monday: Mostly sunny, with a high near 66.

    Monday Night: Partly cloudy, with a low around 40.

    Mostly Sunny
  • Tue11/317% chance of precipitationLow 41°High 59°

    Tuesday: Partly sunny, with a high near 59.

    Tuesday Night: A slight chance of rain showers after 10pm. Mostly cloudy, with a low around 41.

    Partly Sunny
  • Wed11/436% chance of precipitationLow 44°High 63°

    Wednesday: A chance of rain showers. Partly sunny, with a high near 63. Chance of precipitation is 30%.

    Wednesday Night: A chance of rain showers. Mostly cloudy, with a low around 44.

    Chance Rain Showers
  • Thu11/5Model blend46% chance of precipitationLow 50°High 65°

    Thursday: Mostly cloudy, slight chance of rain. High near 65°. Low that night near 50°. About 0.49 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Fri11/6Model blend44% chance of precipitationLow 43°High 64°

    Friday: Chance of rain. High near 64°. Low that night near 43°. About 0.74 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Sat11/7Model blend28% chance of precipitationLow 38°High 59°

    Saturday: Partly cloudy, slight chance of rain. High near 59°. Low that night near 38°. About 0.09 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 43.070, -70.805 from the NWS GYX office, updated 10/29/2026, 3:11 AM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KPSM (Portsmouth Intl, 0 mi), model run 10/29/2026, 4:00 AM EDT

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now58°Sunny1%10 mph
  2. 12 PM62°Sunny1%10 mph
  3. 1 PM66°Sunny1%10 mph
  4. 2 PM67°Sunny1%10 mph
  5. 3 PM68°Sunny1%15 mph
  6. 4 PM68°Sunny1%10 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

What is the high temperature today in Portsmouth, NH 03801?
The National Weather Service forecast for today calls for a high near 69°F. Sunny.
Will it rain in Portsmouth, NH 03801 in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What is the 10-day forecast for Portsmouth, NH 03801?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 5 to Nov 7) come from the NOAA National Blend of Models, with highs of 59°F to 65°F and up to a 46% chance of precipitation. Model guidance this far out often changes.
What time is sunrise and sunset in Portsmouth, NH 03801 today?
Sunrise is about 7:14 AM EDT and sunset is about 5:39 PM EDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Portsmouth, NH 03801?
At Greenland, the 1991 to 2020 normal high in October is 60°F and the normal low is 41°F.

Nearby hazards

New Hampshire hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: Bellevue Pond Fire (1 acre), FD060043 Fire (0 acres), FD060044 Fire (0 acres)

UV and air quality forecast

EPA and AirNow

AQI forecast today (Coastal Rockingham County)
51ModeratePM2.5
AQI forecast tomorrow (Coastal Rockingham County)
GoodPM2.5

UV index guide · Air quality

Drought

By county

Rockingham County, week of 10/20/2026

13% of the county is in moderate drought or worse.

Tides nearby

NOAA tide stations

Beaches nearby

EPA BEACON beaches

Sun and moon

Local time, center of the area

Sunrise
7:14 AM
Sunset
5:39 PM
Daylight
10 hr 25 min
Moon
Waning Gibbous 87% lit
First light (civil dawn)
6:45 AM
Last light (civil dusk)
6:08 PM
Moonrise
7:55 PM
Moonset
11:33 AM

Normal October weather

Climate

Normal October high 60°, low 41°, precipitation 4.95 in for the month. 1991 to 2020 normals at Greenland, 4 mi away.

Other places nearby

Data sources

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About this data

Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.

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