PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

Local Weather
- Local weather by ZIP or City
- Local area snow depth
- CURRENT WEATHER MAPS
- - Fronts & Pressure Centers
- - Current U.S. Temperatures
- - Northwest U.S.
- - Northeast U.S.
- - Mid-Atlantic U.S.
- - Midwest U.S.
- - Central Plains U.S.
- - Southeast U.S.
- - Southern Plains U.S.
- - Southwest U.S.
- - Alaska
10 Day Forecasts
Other Forecasts
- Snowstorm Forecast
- U.S. 6-hourly Snowfall Forecast
- 3 DAY NAM MODEL FORECASTS
- - Clouds & Precipitation
- - Temperature
- 7 DAY NWS FORECASTS
- - Weather Type
- - Precip. Probability
- - High Temperatures
- - Low Temperatures
- - Cloud Cover
- - Wind
- - Relative Humidity
- - Dewpoint
- - Snowfall
- SEASONAL FORECASTS
- - Temperature
- - Precipitation
Severe Weather
Radar
- U.S. RADAR (NWS interactive)
- U.S. RADAR (by state)
Satellite

03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
6:55 PM EDT SEP 1, 2026
Overcast 66°F
Feels Like:	66°F
Dewpoint:	61°F
Rel. Hum.:	84%
Visibility:	10 miles
Wind:	Calm
Pressure:	30.08 inches
Last 72 hours
Local Area Snow Depth
New Hampshire Current Weather
New Hampshire MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

03803 WEATHER FORECAST
10-Day model forecast maps 2026 Hurricanes	PORTSMOUTH, NH 03803 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TONIGHT
Cloudy with a 20 percent chance of showers. Lows in the upper 50s. Light and variable winds.

WEDNESDAY
Mostly cloudy. Highs in the lower 70s. Light and variable winds, becoming east around 10 mph in the afternoon.

WEDNESDAY NIGHT
Cloudy. Showers likely after midnight. Lows around 60. Light and variable winds. Chance of rain 70 percent.

THURSDAY
Showers. A chance of thunderstorms in the afternoon. Humid with highs in the lower 70s. South winds around 10 mph. Chance of rain near 100 percent.

THURSDAY NIGHT
Showers likely with a chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 60s. Chance of rain 60 percent.

FRIDAY
Mostly sunny. Highs in the upper 70s.

FRIDAY NIGHT
Mostly clear. Lows around 60.

SATURDAY
Partly sunny. Highs in the mid 70s.

SATURDAY NIGHT
Partly cloudy. Lows in the mid 50s.

SUNDAY
Mostly sunny. Highs in the lower 70s.

SUNDAY NIGHT
Mostly clear. Lows in the mid 50s.

LABOR DAY
Mostly sunny. Highs in the mid 70s.

03803 WEATHER SATELLITE LOOPS

Visible Weather Satellite
PORTSMOUTH, NH 03803

Infrared Weather Satellite
PORTSMOUTH, NH 03803

03803 WEATHER RADAR LOOP

NEXRAD Weather Radar
PORTSMOUTH, NH 03803

MOS COMPUTER WEATHER FORECAST

PORTSMOUTH, NH 3 hourly weather forecast

weather forecast created 8:00 AM EDT 9/ 1/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Tuesday
1 SEP 2026

2 PM

68°

68°

Mostly Cloudy

47%
RAIN
.1–.25 in

0% Thunder
( 1% severe)

E 7

76%

60°

High 69°

5 PM

68°

68°

Mostly Cloudy

E 7

73%

59°

Mostly Cloudy

Chance of Rain

8 PM

65°

65°

Mostly Cloudy

35%
RAIN
.1–.25 in

0% Thunder
( 1% severe)

E 5

84%

60°

11 PM

63°

64°

Mostly Cloudy

E 1

93%

61°

Wednesday
2 SEP 2026

2 AM

62°

63°

Mostly Cloudy

8%

0% Thunder
( 1% severe)

NE 3

97%

61°

Low 60°

5 AM

61°

61°

Mostly Cloudy

ENE 5

100%

61°

High 73°

8 AM

63°

63°

Mostly Cloudy

13%
RAIN
<.01 in

0% Thunder
( 1% severe)

ENE 6

93%

61°

Mostly Cloudy

11 AM

68°

68°

Mostly Cloudy

E 9

73%

59°

2 PM

70°

70°

Mostly Cloudy

16%
RAIN
.25–.5 in

0% Thunder
( 0% severe)

E 9

66%

58°

5 PM

69°

69°

Mostly Cloudy

ESE 9

66%

57°

8 PM

66°

66°

Mostly Cloudy

59%
RAIN
***

0% Thunder
( 1% severe)

ESE 6

81%

60°

11 PM

64°

65°

Mostly Cloudy

SE 5

93%

62°

Thursday
3 SEP 2026

2 AM

63°

63°

Overcast

79%
RAIN
***

0% Thunder
( 11% severe)

SE 6

100%

63°

Low 61°

5 AM

64°

64°

Overcast

SE 7

100%

64°

High 76°

8 AM

65°

65°

Mostly Cloudy

79%
RAIN
***

0% Thunder
( 18% severe)

SSE 8

100%

65°

Mostly Cloudy

Rain Likely

11 AM

70°

70°

Mostly Cloudy

S 9

90%

67°

2 PM

73°

73°

Mostly Cloudy

62%
RAIN
***

0% Thunder
( 28% severe)

S 8

81%

67°

5 PM

74°

74°

Mostly Cloudy

SW 7

79%

67°

8 PM

69°

69°

Mostly Cloudy

NW 5

90%

66°


PORTSMOUTH, NH extended weather forecast
Friday 4 SEP 2026	Saturday 5 SEP 2026	Sunday 6 SEP 2026	Monday 7 SEP 2026	Tuesday 8 SEP 2026
Low 61°	Low 60°	Low 54°	Low 54°	Low 57°
High 78°	High 73°	High 70°	High 77°	High 75°

Overcast 27% Rain	Mostly Cloudy 49% Rain	Mostly Cloudy 26% Rain	Partly Cloudy 18% Rain	Overcast 37% Rain

WEATHER SELECT BOX EXAMPLES:

for LOCAL WEATHER:
SNOW DEPTH:
LOCAL WEATHER RADAR:
STATE WEATHER MAP:

Portsmouth, NH
Portsmouth, NH snow
Portsmouth, NH radar
NH map

-or-
-or-
-or-

03803
03803 snow
03803 radar

-or-
-or-

NH
NH snow

Copyright © 2026 WeatherStreet.com

Put our free WeatherStreet weather lookup on your web page.

Terms & Conditions
This is not clickable - please e-mail us separately

This is not clickable - please e-mail us separately