Weather forecast for 10 days
Portsmouth, NH

Weather forecast for the weekend

Saturday, Jun 21.

Mostly Sunny
5:02 am

8:27 pm
EDT
Mostly Sunny
81°F / 66°F
  • Wind: 10mph WSW
  • Humidity: 54%
  • Precip. probability: 3%
  • Precipitation: 0.12"
  • UV index: 8
On Saturday, June 21, sun-filled skies will remain for most of the day.
Minimal precipitation is forecasted. The temperature variation is expected to range from a maximum of a warm 80.6°F to a minimum of a comfortable 66.2°F.
On Saturday, expect warmer conditions as the high matches July's average of 76.3°F, not June's.
Sunrise will be at 5:02 am and sunset at 8:27 pm; the daylight will last for 15h and 26min.

Sunday, Jun 22.

AM Thunderstorms
5:02 am

8:27 pm
EDT
AM Thunderstorms
81°F / 66°F
  • Wind: 10mph WSW
  • Humidity: 75%
  • Precip. probability: 66%
  • Precipitation: 0.08"
  • UV index: 8
On Sunday, June 22, thunder and lightning are expected in the morning, accompanied by rain showers.
Minimal precipitation is forecasted. Temperatures are predicted to peak at a warm 80.6°F and drop to a minimum of a comfortable 66.2°F.
The weather on Sunday is warmer, with a maximum expected near 76.3°F - more like July than June.
Sunrise will be at 5:02 am and sunset at 8:27 pm; the daylight will last for 15h and 26min.

Frequently asked questions

What is the weather forecast for Portsmouth for Saturday?
On Saturday, in Portsmouth, bright conditions and mild breezes are expected.
Will it rain on Saturday?
On Saturday, there is a low chance of minimal precipitation in Portsmouth.
What will be the highest temperature on Saturday?
On Saturday, the maximum temperature in Portsmouth will be 80.6°F, while the minimum temperature will be 66.2°F.
What is the weather forecast for Portsmouth for Sunday?
On Sunday, in Portsmouth, expect a stormy morning, with occasional thunder and brief periods of heavy rain.
Will it rain on Sunday?
There is a high chance of rainfall on Sunday, but precipitation will be minimal.
What will be the highest temperature on Sunday?
On Sunday, the maximum temperature will be 80.6°F, while the minimum temperature will be 66.2°F.
What is the weather forecast for Portsmouth for the next ten days?
In Portsmouth, weather will be unstable, and a combination of gloomy, bright, stormy and wet weather is anticipated for the next ten days.
Will it rain in the next ten days in Portsmouth?
Rainfall is expected on Sunday, next Thursday through next Saturday in Portsmouth. With light precipitation of 0.39", next Friday will be the day with the most rainfall.
How hot will it be in the next ten days?
The maximum temperature will range between 68°F and 95°F, as the minimum temperature will be between 60.8°F and 73.4°F.
Taking the humidity into consideration, the maximum feel-like temperature will range between 68°F and 107.6°F.
What will be the hottest and the coldest days?
The hottest day will be Tuesday, with a maximum of 95°F. The coldest day will be next Friday, with a maximum of 68°F.

Long-term weather forecast

ThuJun 19.
  • min.
  • 68°F
Partly Cloudy
Partly Cloudy
  • Wind: 11mph SSW
  • Humidity: 81%
  • UV index: 0
  • Precip. probability: 24%
  • Precipitation: 0"
  • 5:01 am 8:27 pm EDT
FriJun 20.
  • 81°F
  • 61°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Wind: 22mph W
  • Humidity: 53%
  • UV index: 8
  • Precip. probability: 6%
  • Precipitation: 0"
  • 5:01 am 8:27 pm EDT
SatJun 21.
  • 81°F
  • 66°F
Mostly Sunny
Mostly Sunny
  • Wind: 10mph WSW
  • Humidity: 54%
  • UV index: 8
  • Precip. probability: 3%
  • Precipitation: 0.12"
  • 5:02 am 8:27 pm EDT
SunJun 22.
  • 81°F
  • 66°F
AM Thunderstorms
AM Thunderstorms
  • Wind: 10mph WSW
  • Humidity: 75%
  • UV index: 8
  • Precip. probability: 66%
  • Precipitation: 0.08"
  • 5:02 am 8:27 pm EDT
MonJun 23.
  • 86°F
  • 73°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph SSE
  • Humidity: 71%
  • UV index: 8
  • Precip. probability: 7%
  • Precipitation: 0"
  • 5:02 am 8:28 pm EDT
TueJun 24.
  • 95°F
  • 73°F
Mostly Sunny
Mostly Sunny
  • Wind: 9mph W
  • Humidity: 54%
  • UV index: 8
  • Precip. probability: 7%
  • Precipitation: 0"
  • 5:03 am 8:28 pm EDT
WedJun 25.
  • 79°F
  • 63°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph E
  • Humidity: 68%
  • UV index: 8
  • Precip. probability: 24%
  • Precipitation: 0"
  • 5:03 am 8:28 pm EDT
ThuJun 26.
  • 70°F
  • 61°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 9mph E
  • Humidity: 65%
  • UV index: 6
  • Precip. probability: 24%
  • Precipitation: 0.04"
  • 5:03 am 8:28 pm EDT
FriJun 27.
  • 68°F
  • 61°F
Showers
Showers
  • Wind: 9mph ESE
  • Humidity: 79%
  • UV index: 7
  • Precip. probability: 43%
  • Precipitation: 0.39"
  • 5:04 am 8:28 pm EDT
SatJun 28.
  • 73°F
  • 63°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 9mph E
  • Humidity: 78%
  • UV index: 7
  • Precip. probability: 45%
  • Precipitation: 0.16"
  • 5:04 am 8:28 pm EDT
And a mix of overcast, sunny, lightning-active and wet weather is expected.
Rainfall is expected on Sunday, next Thursday through next Saturday.
Temperature variation will be noticeable across the forecast period. Highs will range from 68°F to 95°F, while the fluctuation in night temperatures will be also significant, as nighttime lows are forecast to fall between 60.8°F and 73.4°F.
With the highest temperature of 95°F, Tuesday will be the hottest day; with the highest temperature of 68°F, next Friday will be the coldest day.
Combining with the humidity, the maximum feel-like temperature may increase considerably and range between 68°F and a torridly hot 107.6°F.
Updated: Jun 19, 2025 @ 22:47:01 UTC
Published by: Weather U.S. | About Us
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