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 2, 2026
Broken Clouds 64°F
Feels Like:	64°F
Dewpoint:	61°F
Rel. Hum.:	90%
Visibility:	10 miles
Wind:	ESE at 7 mph
Pressure:	30.14 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
Mostly cloudy. Rain with a slight chance of thunderstorms after midnight. Patchy fog after midnight. Lows in the lower 60s. Light and variable winds. Chance of rain 90 percent.

THURSDAY
Patchy fog in the morning. Rain with a chance of thunderstorms in the morning, then partly sunny with a chance of showers with a slight chance of thunderstorms in the afternoon. Humid with highs in the mid 70s. South winds around 10 mph with gusts up to 20 mph, becoming southwest in the afternoon. Chance of rain near 100 percent.

THURSDAY NIGHT
Partly cloudy. Humid with lows in the lower 60s. Light and variable winds.

FRIDAY
Partly sunny. Humid with highs around 80. Light and variable winds.

FRIDAY NIGHT
Mostly clear. Lows around 60.

SATURDAY
Partly sunny. A chance of showers in the afternoon. Highs in the lower 70s. Chance of rain 40 percent.

SATURDAY NIGHT
Partly cloudy with a chance of showers in the evening, then mostly clear after midnight. Lows in the mid 50s. Chance of rain 40 percent.

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.

MONDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s.

TUESDAY
Partly sunny. Highs in the upper 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/ 2/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
2 SEP 2026

2 PM

72°

72°

Mostly Cloudy

1%

0% Thunder
( 0% severe)

E 9

59%

57°

High 73°

5 PM

71°

71°

Mostly Cloudy

ESE 9

61%

57°

Mostly Cloudy

Chance of Rain

8 PM

66°

66°

Mostly Cloudy

29%
RAIN
<.01 in

0% Thunder
( 1% severe)

ESE 6

78%

59°

11 PM

63°

63°

Mostly Cloudy

SSE 6

90%

60°

Thursday
3 SEP 2026

2 AM

62°

62°

Overcast

96%
RAIN
***

0% Thunder
( 20% severe)

SE 7

100%

62°

Low 60°

5 AM

63°

63°

Mostly Cloudy

SE 8

100%

63°

High 77°

8 AM

64°

63°

Mostly Cloudy

85%
RAIN
***

0% Thunder
( 24% severe)

SSE 10

100%

64°

Mostly Cloudy

Rain Likely

11 AM

70°

70°

Mostly Cloudy

SSW 10

90%

67°

2 PM

75°

75°

Mostly Cloudy

56%
RAIN
.5–1 in

0% Thunder
( 13% severe)

W 9

82%

69°

5 PM

76°

77°

Partly Cloudy

E 7

76%

68°

8 PM

70°

70°

Partly Cloudy

9%

0% Thunder
( 3% severe)

E 3

90%

67°

11 PM

66°

66°

Partly Cloudy

NNW 2

97%

65°

Friday
4 SEP 2026

2 AM

64°

66°

Partly Cloudy

1%

0% Thunder
( 0% severe)

WNW 2

100%

64°

Low 62°

5 AM

62°

63°

Partly Cloudy

W 3

100%

62°

High 82°

8 AM

65°

65°

Partly Cloudy

1%

0% Thunder
( 1% severe)

WNW 6

93%

63°

Partly Cloudy

11 AM

77°

79°

Partly Cloudy

NW 8

62%

63°

2 PM

81°

82°

Partly Cloudy

6%

0% Thunder
( 4% severe)

WNW 8

51%

61°

5 PM

79°

80°

Partly Cloudy

WNW 9

52%

60°

8 PM

71°

71°

Partly Cloudy

NW 7

68%

60°


PORTSMOUTH, NH extended weather forecast
Saturday 5 SEP 2026	Sunday 6 SEP 2026	Monday 7 SEP 2026	Tuesday 8 SEP 2026	Wednesday 9 SEP 2026
Low 60°	Low 53°	Low 55°	Low 58°	Low 56°
High 71°	High 76°	High 78°	High 78°	High 72°

Mostly Cloudy 34% Rain	Partly Cloudy 6% Rain	Clear 5% Rain	Mostly Cloudy 16% Rain	Overcast 34% Rain

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