Portsmouth, NH Weather Forecast and Current Conditions
| Day | Sky | High / Low | Precip | Wind | Humidity | |
|---|---|---|---|---|---|---|
|
Mon Jun 29 |
 |
Mostly Sunny Close Hourly |
77º / 60º | 5% | E 7 mph | 68% |
| 6am |  |
Sunny | 62º | 2% | N 1 mph | 91% |
| 7am | |
Sunny | 65º | 2% | N 1 mph | 86% |
| 8am | |
Sunny | 70º | 2% | NNE 2 mph | 74% |
| 9am | |
Sunny | 74º | 1% | NNE 3 mph | 66% |
| 10am | |
Sunny | 76º | 1% | ENE 3 mph | 62% |
| 11am | |
Sunny | 76º | 2% | E 5 mph | 59% |
| 12pm | |
Sunny | 76º | 3% | ESE 6 mph | 58% |
| 1pm | |
Sunny | 76º | 4% | ESE 7 mph | 58% |
| 2pm | |
Sunny | 76º | 2% | ESE 7 mph | 59% |
| 3pm | |
Sunny | 75º | 2% | SE 7 mph | 59% |
| 4pm | |
Mostly Sunny | 75º | 2% | SE 7 mph | 60% |
| 5pm | |
Mostly Sunny | 74º | 2% | SE 7 mph | 61% |
| 6pm | |
Sunny | 73º | 3% | SSE 6 mph | 63% |
| 7pm | |
Sunny | 71º | 4% | SSE 5 mph | 67% |
| 8pm | |
Sunny | 69º | 5% | SSE 4 mph | 71% |
| 9pm |  |
Clear | 67º | 6% | SSE 4 mph | 73% |
| 10pm |  |
Partly Cloudy | 66º | 7% | S 3 mph | 76% |
| 11pm | |
Partly Cloudy | 65º | 7% | S 3 mph | 77% |
|
Tue Jun 30 |
 |
Partly Cloudy View Hourly |
85º / 69º | 17% | S 9 mph | 62% |
| 12am | |
Partly Cloudy | 64º | 5% | SSW 3 mph | 79% |
| 1am |  |
Mostly Clear | 64º | 7% | SSW 3 mph | 81% |
| 2am | |
Partly Cloudy | 63º | 6% | SSW 3 mph | 85% |
| 3am | |
Clear | 62º | 7% | SW 3 mph | 88% |
| 4am | |
Partly Cloudy | 61º | 7% | SW 2 mph | 90% |
| 5am | |
Mostly Clear | 61º | 8% | SW 2 mph | 92% |
| 6am | |
Mostly Sunny | 62º | 8% | SW 2 mph | 93% |
| 7am | |
Partly Cloudy | 66º | 7% | SSW 2 mph | 87% |
| 8am | |
Partly Cloudy | 69º | 5% | SW 3 mph | 80% |
| 9am | |
Partly Cloudy | 73º | 4% | SW 4 mph | 72% |
| 10am | |
Partly Cloudy | 78º | 2% | SW 5 mph | 63% |
| 11am | |
Partly Cloudy | 81º | 2% | SSW 6 mph | 59% |
| 12pm |  |
Mostly Cloudy | 83º | 2% | S 7 mph | 55% |
| 1pm | |
Mostly Cloudy | 84º | 6% | S 9 mph | 52% |
| 2pm | |
Mostly Cloudy | 83º | 7% | SSE 9 mph | 55% |
| 3pm | |
Mostly Cloudy | 82º | 17% | S 8 mph | 55% |
| 4pm | |
Mostly Cloudy | 82º | 4% | SSE 8 mph | 55% |
| 5pm | |
Partly Cloudy | 82º | 6% | S 9 mph | 56% |
| 6pm | |
Partly Cloudy | 81º | 6% | S 9 mph | 58% |
| 7pm | |
Partly Cloudy | 80º | 7% | S 8 mph | 61% |
| 8pm | |
Mostly Cloudy | 78º | 9% | S 8 mph | 64% |
| 9pm |  |
Mostly Cloudy | 76º | 7% | SSW 7 mph | 69% |
| 10pm | |
Partly Cloudy | 75º | 6% | SSW 8 mph | 71% |
| 11pm |  |
Cloudy | 73º | 6% | SSW 8 mph | 74% |
|
Wed Jul 1 |
|
Partly Cloudy View Hourly |
91º / 74º | 17% | SW 8 mph | 63% |
| 12am | |
Cloudy | 72º | 23% | SSW 7 mph | 75% |
| 1am |  |
Showers | 72º | 44% | SW 8 mph | 77% |
| 2am | |
Showers | 71º | 36% | SW 7 mph | 81% |
| 3am | |
Mostly Cloudy | 71º | 10% | SW 7 mph | 81% |
| 4am | |
Partly Cloudy | 70º | 7% | SW 7 mph | 81% |
| 5am | |
Partly Cloudy | 71º | 7% | SW 6 mph | 79% |
|
Thu Jul 2 |
|
Mostly Sunny | 96º / 74º | 17% | W 9 mph | 56% |
|
Fri Jul 3 |
|
Mostly Sunny | 95º / 72º | 24% | WNW 10 mph | 53% |
|
Sat Jul 4 |
 |
PM Thunderstorms | 86º / 68º | 52% | SW 8 mph | 62% |
|
Sun Jul 5 |
 |
PM Showers | 86º / 68º | 40% | W 9 mph | 63% |
|
Mon Jul 6 |
|
PM Showers | 77º / 64º | 35% | ENE 9 mph | 73% |
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Buoy Data
For Portsmouth, NH -
Wind Forecast
In Portsmouth, NH -
Radar
In Portsmouth, NH -
Marine Forecast
In Portsmouth, NH
Weather Radar for Portsmouth, NH See Radar
* Playback displays weather for the past 6 hours.
NOAA Weather Marine Forecast for Portsmouth, NH
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.
SW wind around 10 kt. Showers likely, mainly after 11pm. Seas 1 ft or less.
Variable winds 5 kt or less. A chance of showers before 8am. Seas 1 ft or less.
Variable winds 5 kt or less. A chance of showers between 8pm and 2am. Seas 1 ft or less.
Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.
NOAA Buoy Data Near Portsmouth, NH See Map
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Wind Speed Forecast for Portsmouth, NH
| Monday | Tuesday | Wednesday | ||||||||||
| Wind Speed (MPH) | 1 | 3 | 7 | 6 | 3 | 3 | 2 | 5 | 9 | 9 | 8 | 7 |
| 10am | 2pm | 6pm | 10pm | 2am | 6am | 10am | 2pm | 6pm | 10pm | 2am | 6am | |
| MPH | 1 | 3 | 7 | 6 | 3 | 3 | 2 | 5 | 9 | 9 | 8 | 7 |
| DIR | N | ENE | ESE | SSE | S | SSW | SW | SW | SSE | S | SSW | SW |
Current Weather Conditions In Portsmouth, NH
As Of: 25 minutes ago
- 62ºF
- 62ºF
- 1mph
- 0º (N)
- 1mph
- Sunny
- 9mi
- 30.04"
- 91%
- 0ºF
The weather right now in Portsmouth, NH is Sunny. The current temperature is 62°F, and the expected high and low for today, Monday, June 29, 2026, are 77° high temperature and 60°F low temperature. The wind is currently blowing at 1 miles per hour, and coming from the North. The wind is gusting to 1 mph. With the wind and the atmosphere the temperature feels like 62° Fahrenheit. Expected precipitation is 2 percent, with current humidity at 91 percent, and air pressure at 30.04 in. Visibility is 9 nautical miles. There are 1 current weather alert(s).
...EXTREME HEAT WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH FRIDAY EVENING...
WHAT: Dangerously hot conditions with heat index values up to 110
possible.
WHERE: Portions of south central, southwest, and western Maine
and central, northern, and southern New Hampshire.
WHEN: From Wednesday afternoon through Friday evening.
IMPACTS: Heat related illnesses increase significantly during
extreme heat and high humidity events.
ADDITIONAL DETAILS: Overnight low temperatures will only fall
into the 70s, resulting in accumulated heat stress.
PRECAUTIONARY / PREPAREDNESS ACTIONS:
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
&&
