How is the weather in Portsmouth, NH?

At 11:09 AM on Mon, Sep 15, 2025 it is partly cloudy and 69 degrees Fahrenheit, feeling like 69 degrees.

Portsmouth, NH Weather Forecast and Current Conditions (03801)

69°F
Feels Like 69°F

Humidity 63% Dew Point 56°F Wind E 3 MPH Gusts 3 Barometer 30.29 in.769.4 mm

Solar Rad 257 w/m2 UV Index 1.7

Report from 0.4 miles WNW of central Portsmouth at 11:09 AM Mon, Sep 15, 2025

Current Weather

69°F
Feels Like 69°F

Humidity 63% Dew Point 56°F Wind E 3 MPH Gusts 3 Barometer 30.29 in.769.4 mm

Solar Rad 257 w/m2 UV Index 1.7

Report from 0.4 miles WNW of central Portsmouth at 11:09 AM Mon, Sep 15, 2025

Forecast at a Glance

MonSep 15

72°

52°

TueSep 16

20%

74°

52°

WedSep 17

73°

55°

ThuSep 18

10%

80°

59°

FriSep 19

77°

46°

SatSep 20

68°

47°

SunSep 21

69°

52°

This Date in Weather History

1982 - A snowstorm over Wyoming produced 16.9 inches at Lander to esablish a 24 hour record for September for that location.

Portsmouth 7 Day Weather Forecast Details

Monday Sep 15

Day: Mostly Sunny with a high near 72°F. Winds from the NNE at 4 mph

Night: Mostly Clear with a low near 52°F. Winds from the SE at 2 mph. Chance of precipitation is 20%

Tuesday Sep 16

Day: Mostly Sunny with a high near 74°F. Winds from the NW at 1 mph. Chance of precipitation is 20%

Night: Partly Cloudy with a low near 52°F. Winds from the S at 3 mph

Wednesday Sep 17

Day: Partly Cloudy with a high near 73°F. Winds from the WSW at 2 mph

Night: Partly Cloudy with a low near 55°F. Winds from the SSE at 4 mph

Thursday Sep 18

Day: Partly Cloudy with Showers with a high near 80°F. Winds from the SW at 2 mph. Chance of precipitation is 10%

Night: Mostly Clear with a low near 59°F. Winds from the S at 4 mph

Friday Sep 19

Day: Mostly Sunny with a high near 77°F. Winds from the W at 4 mph

Night: Mostly Clear with a low near 46°F. Winds from the NW at 7 mph

Saturday Sep 20

Day: Sunny with a high near 68°F. Winds from the NNW at 7 mph

Night: Mostly Clear with a low near 47°F. Winds from the ENE at 4 mph

Sunday Sep 21

Day: Mostly Sunny with a high near 69°F. Winds from the WSW at 2 mph

Night: Mostly Clear with a low near 52°F. Winds from the S at 6 mph

Monday Sep 22

Day: Partly Cloudy with Showers with a high near 73°F. Winds from the SW at 3 mph. Chance of precipitation is 10%

Night: Partly Cloudy with a low near 58°F. Winds from the S at 5 mph

Tuesday Sep 23

Day: Partly Cloudy with a high near 74°F. Winds from the SW at 3 mph

Night: Partly Cloudy with Showers with a low near 59°F. Winds from the S at 5 mph. Chance of precipitation is 10%

Wednesday Sep 24

Day: Partly Cloudy with Showers with a high near 71°F. Winds from the W at 3 mph. Chance of precipitation is 10%

Night: Partly Cloudy with Showers with a low near 57°F. Winds from the SSE at 5 mph. Chance of precipitation is 10%

Sun & Moon Monthly

First Light 5:55 AM

Sunrise 6:24 AM

Sunset 6:55 PM

Last Light 7:23 PM

Moonrise ------

Moonset 3:49 PM

Moon Phase

Close Tide Stations

Portsmouth
(0.3 miles away)

Seavey Island
(0.9 miles away)

Atlantic Heights
(0.9 miles away)

Lakes Weather - Plan for a Beautiful Day

Data costs money. Servers cost money. Our website is made possible by displaying online advertisements to our visitors. Please consider supporting us by disabling your ad blocker, contribute to WeatherForYou.com by buying me a coffee or subscribe to our ClearSky ad-free service.

Weather Near Portsmouth

Isle Of Shoals Coast Guard Station, NH

North Salem, NH

Pittsfield, NH

Marblehead, MA

Contiguous United States Extremes

Sun's High Temperature
108 at Death Valley, CA

Mon's Low Temperature
27 at 9 Miles East-southeast Of Creede, CO

Weather Folklore

If smoke falls to the ground, it is likely to rain.

Current subscribers - login to your ClearSky account