PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
10:55 PM EDT SEP 11, 2026
Clear 57°F
Feels Like:	56°F
Dewpoint:	45°F
Rel. Hum.:	64%
Visibility:	10 miles
Wind:	NW at 6 mph
Pressure:	30.01 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
Clear. Lows in the lower 50s. Light and variable winds.

SATURDAY
Sunny in the morning, then becoming partly sunny. Highs in the lower 70s. Light and variable winds, becoming southeast around 10 mph in the afternoon.

SATURDAY NIGHT
Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the upper 50s. South winds around 10 mph in the evening, becoming light and variable. Chance of rain 40 percent.

SUNDAY
Showers with highs in the lower 70s. Light and variable winds. Chance of rain 90 percent.

SUNDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the lower 60s. Chance of rain 50 percent.

MONDAY
Mostly sunny. Highs in the lower 70s.

MONDAY NIGHT
Mostly clear. Lows around 50.

TUESDAY
Mostly sunny. Highs in the upper 60s.

TUESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s.

WEDNESDAY
Partly sunny. Highs in the mid 70s.

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

THURSDAY
Partly sunny with a 30 percent chance of showers. 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 9/11/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Friday
11 SEP 2026

2 PM

73°

73°

Clear

0%

0% Thunder
( 0% severe)

WNW 10

37%

45°

High 74°

5 PM

73°

73°

Clear

WNW 10

37%

45°

Clear

8 PM

63°

63°

Clear

0%

0% Thunder
( 0% severe)

NW 6

56%

47°

11 PM

57°

57°

Clear

NW 5

69%

47°

Saturday
12 SEP 2026

2 AM

53°

53°

Clear

0%

0% Thunder
( 0% severe)

CALM

80%

47°

Low 51°

5 AM

51°

51°

Clear

CALM

86%

47°

High 72°

8 AM

55°

55°

Clear

0%

0% Thunder
( 0% severe)

CALM

80%

49°

Increasing Clouds

11 AM

67°

67°

Clear

SSE 6

52%

49°

2 PM

70°

70°

Partly Cloudy

0%

0% Thunder
( 0% severe)

SSE 10

49%

50°

5 PM

68°

68°

Mostly Cloudy

SSE 12

57%

52°

8 PM

64°

64°

Mostly Cloudy

3%

0% Thunder
( 0% severe)

SSE 8

75%

56°

11 PM

62°

61°

Mostly Cloudy

S 8

84%

57°

Sunday
13 SEP 2026

2 AM

61°

61°

Mostly Cloudy

44%
RAIN
***

0% Thunder
( 10% severe)

S 6

90%

58°

Low 59°

5 AM

61°

61°

Overcast

S 6

93%

59°

High 75°

8 AM

62°

62°

Mostly Cloudy

60%
RAIN
***

0% Thunder
( 16% severe)

S 7

97%

61°

Mostly Cloudy

Rain Likely

11 AM

67°

67°

Mostly Cloudy

S 9

90%

64°

2 PM

72°

72°

Mostly Cloudy

13%
RAIN
.01–.1 in

0% Thunder
( 13% severe)

S 9

79%

65°

5 PM

73°

73°

Mostly Cloudy

SSE 7

79%

66°

8 PM

69°

69°

Mostly Cloudy

S 6

87%

65°


PORTSMOUTH, NH extended weather forecast
Monday 14 SEP 2026	Tuesday 15 SEP 2026	Wednesday 16 SEP 2026	Thursday 17 SEP 2026	Friday 18 SEP 2026
Low 56°	Low 49°	Low 52°	Low 59°	Low 51°
High 72°	High 64°	High 75°	High 73°	High 66°

Partly Cloudy 18% Rain	Partly Cloudy 7% Rain	Mostly Cloudy 26% Rain	Mostly Cloudy 39% Rain	Overcast 52% Rain

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