PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
6:55 PM EDT SEP 3, 2026
Scattered Clouds 70°F
Feels Like:	70°F
Dewpoint:	64°F
Rel. Hum.:	81%
Visibility:	10 miles
Wind:	SSE at 5 mph
Pressure:	29.86 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 this evening, then becoming mostly cloudy. Patchy fog. Lows in the lower 60s. Light and variable winds.

FRIDAY
Patchy fog in the morning. Partly sunny. Humid with highs in the lower 80s. Light and variable winds.

FRIDAY NIGHT
Mostly clear. Lows around 60. Light and variable winds.

SATURDAY
Partly sunny. A chance of showers in the afternoon. Highs in the lower 70s. Northeast winds around 10 mph. Chance of rain 50 percent.

SATURDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the mid 50s. Light and variable winds, becoming north around 10 mph after midnight. Chance of rain 50 percent.

SUNDAY
Mostly sunny. Highs in the lower 70s.

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

LABOR DAY
Sunny. Highs in the mid 70s.

MONDAY NIGHT
Mostly clear. Lows in the upper 50s.

TUESDAY
Partly sunny. Highs in the upper 70s.

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

WEDNESDAY
Partly sunny. Highs in the mid 70s.

WEDNESDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A 40 percent chance of showers. Lows in the lower 60s.

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/ 3/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Thursday
3 SEP 2026

2 PM

76°

77°

Mostly Cloudy

21%
RAIN
.01–.1 in

0% Thunder
( 13% severe)

WNW 5

76%

68°

High 78°

5 PM

77°

79°

Mostly Cloudy

NE 5

74%

68°

Mostly Cloudy

Chance of Rain

8 PM

69°

69°

Partly Cloudy

35%
RAIN
>2 in

0% Thunder
( 8% severe)

NE 1

93%

67°

11 PM

65°

65°

Mostly Cloudy

CALM

100%

65°

Friday
4 SEP 2026

2 AM

63°

64°

Mostly Cloudy

1%

0% Thunder
( 0% severe)

CALM

100%

63°

Low 62°

5 AM

63°

64°

Mostly Cloudy

CALM

100%

63°

High 84°

8 AM

65°

65°

Mostly Cloudy

2%

0% Thunder
( 1% severe)

W 5

97%

64°

Partly Cloudy

11 AM

78°

80°

Partly Cloudy

WNW 7

62%

64°

2 PM

82°

83°

Clear

7%

0% Thunder
( 5% severe)

WNW 7

49%

61°

5 PM

80°

81°

Partly Cloudy

W 7

52%

61°

8 PM

72°

72°

Partly Cloudy

0%

0% Thunder
( 4% severe)

WNW 5

66%

60°

11 PM

66°

66°

Partly Cloudy

NW 6

81%

60°

Saturday
5 SEP 2026

2 AM

62°

62°

Partly Cloudy

1%

0% Thunder
( 1% severe)

NW 6

90%

59°

Low 59°

5 AM

60°

60°

Partly Cloudy

NNW 6

96%

59°

High 75°

8 AM

63°

63°

Mostly Cloudy

12%
RAIN
<.01 in

0% Thunder
( 6% severe)

NA 7

87%

59°

Mostly Cloudy

Chance of Rain

11 AM

72°

72°

Mostly Cloudy

NNE 10

59%

57°

2 PM

73°

73°

Mostly Cloudy

32%
RAIN
<.01 in

0% Thunder
( 12% severe)

NE 12

57%

57°

5 PM

71°

71°

Mostly Cloudy

ENE 9

57%

55°

8 PM

65°

65°

Mostly Cloudy

NNE 6

73%

56°


PORTSMOUTH, NH extended weather forecast
Sunday 6 SEP 2026	Monday 7 SEP 2026	Tuesday 8 SEP 2026	Wednesday 9 SEP 2026	Thursday 10 SEP 2026
Low 53°	Low 52°	Low 56°	Low 55°	Low 58°
High 72°	High 77°	High 77°	High 71°	High 75°

Partly Cloudy 28% Rain	Clear 6% Rain	Partly Cloudy 14% Rain	Mostly Cloudy 24% Rain	Overcast 52% Rain

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