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
4:55 PM EDT AUG 30, 2026
Broken Clouds 81°F
Feels Like:	81°F
Dewpoint:	57°F
Rel. Hum.:	44%
Visibility:	10 miles
Wind:	WSW at 7 mph
Pressure:	29.97 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
Partly cloudy with a slight chance of showers in the evening, then mostly clear after midnight. Patchy fog after midnight. Lows in the upper 50s. Light and variable winds. Chance of rain 20 percent.

MONDAY
Patchy fog in the morning. Mostly sunny. Highs in the mid 70s. Light and variable winds, becoming southeast around 10 mph in the afternoon.

MONDAY NIGHT
Partly cloudy in the evening, then cloudy with a chance of showers after midnight. Patchy fog after midnight. Lows around 60. Light and variable winds. Chance of rain 50 percent.

TUESDAY
Patchy fog in the morning. Showers with highs in the lower 70s. Light and variable winds, becoming east around 10 mph in the afternoon. Chance of rain 80 percent.

TUESDAY NIGHT
Showers. Lows in the upper 50s. Chance of rain 80 percent.

WEDNESDAY
Mostly cloudy with a chance of showers. Highs in the lower 70s. Chance of rain 50 percent.

WEDNESDAY NIGHT
Showers likely. Lows in the lower 60s. Chance of rain 70 percent.

THURSDAY
Showers likely, mainly in the morning. Highs in the upper 70s. Chance of rain 60 percent.

THURSDAY NIGHT
Partly cloudy with a 50 percent chance of showers. Lows in the lower 60s.

FRIDAY
Partly sunny. Highs in the mid 70s.

FRIDAY NIGHT
Partly cloudy. Lows in the upper 50s.

SATURDAY
Partly sunny. Highs in the lower 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 8/30/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Sunday
30 AUG 2026

2 PM

84°

83°

Mostly Cloudy

15%
RAIN
<.01 in

0% Thunder
( 5% severe)

WSW 12

37%

55°

High 85°

5 PM

82°

81°

Mostly Cloudy

W 10

40%

55°

Mostly Cloudy

8 PM

73°

73°

Mostly Cloudy

11%
RAIN
<.01 in

0% Thunder
( 9% severe)

W 7

55%

56°

11 PM

68°

68°

Partly Cloudy

W 6

73%

59°

Monday
31 AUG 2026

2 AM

64°

65°

Partly Cloudy

0%

0% Thunder
( 0% severe)

NW 5

87%

60°

Low 59°

5 AM

60°

61°

Partly Cloudy

NNW 3

96%

59°

High 78°

8 AM

63°

64°

Clear

0%

0% Thunder
( 0% severe)

N 2

87%

59°

Partly Cloudy

11 AM

73°

73°

Clear

E 5

55%

56°

2 PM

75°

75°

Partly Cloudy

0%

0% Thunder
( 1% severe)

SE 9

50%

55°

5 PM

73°

73°

Partly Cloudy

SSE 10

51%

54°

8 PM

67°

67°

Mostly Cloudy

2%

0% Thunder
( 1% severe)

SSE 7

70%

57°

11 PM

64°

65°

Mostly Cloudy

S 5

87%

60°

Tuesday
1 SEP 2026

2 AM

63°

64°

Mostly Cloudy

39%
RAIN
>2 in

0% Thunder
( 3% severe)

S 2

93%

61°

Low 61°

5 AM

63°

64°

Overcast

CALM

97%

62°

High 73°

8 AM

64°

65°

Mostly Cloudy

70%
RAIN
***

0% Thunder
( 6% severe)

ESE 5

97%

63°

Mostly Cloudy

Rain Likely

11 AM

69°

69°

Mostly Cloudy

E 8

84%

64°

2 PM

70°

70°

Mostly Cloudy

75%
RAIN
***

0% Thunder
( 9% severe)

E 12

78%

63°

5 PM

69°

69°

Mostly Cloudy

ESE 12

76%

61°

8 PM

66°

66°

Mostly Cloudy

ESE 8

84%

61°


PORTSMOUTH, NH extended weather forecast
Wednesday 2 SEP 2026	Thursday 3 SEP 2026	Friday 4 SEP 2026	Saturday 5 SEP 2026	Sunday 6 SEP 2026
Low 59°	Low 62°	Low 61°	Low 56°	Low 54°
High 69°	High 77°	High 78°	High 74°	High 73°

Overcast 43% Rain	Overcast 69% Rain	Partly Cloudy 27% Rain	Partly Cloudy 32% 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