PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
12:55 AM EDT SEP 13, 2026
Broken Clouds 61°F
Feels Like:	61°F
Dewpoint:	55°F
Rel. Hum.:	81%
Visibility:	10 miles
Wind:	Calm
Pressure:	30.07 inches
Last 72 hours
Local Area Snow Depth
New Hampshire Current Weather
New Hampshire MOS Forecast Weather

Weather Map

(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 in the evening, then becoming mostly cloudy. Patchy fog after midnight. Lows in the upper 50s. South winds around 10 mph in the evening, becoming light and variable.

SUNDAY
Showers. Isolated thunderstorms. Patchy fog. Humid with highs in the upper 60s. Light and variable winds. Chance of rain 90 percent.

SUNDAY NIGHT
Mostly cloudy. Humid with lows around 60. Light and variable winds.

MONDAY
Partly sunny in the morning, then clearing. Highs in the lower 70s. Northwest winds around 10 mph with gusts up to 25 mph.

MONDAY NIGHT
Clear. Lows in the upper 40s.

TUESDAY
Sunny. Highs in the mid 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. Highs in the mid 70s.

THURSDAY NIGHT
Partly cloudy. A chance of showers after midnight. Lows around 60. Chance of rain 40 percent.

FRIDAY
Partly sunny. A chance of showers in the morning. Highs in the mid 70s. Chance of rain 40 percent.

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 PM EDT 9/12/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Sunday
13 SEP 2026

2 AM

59°

59°

Mostly Cloudy

12%
RAIN
<.01 in

0% Thunder
( 3% severe)

S 5

93%

57°

Low 58°

5 AM

60°

60°

Mostly Cloudy

S 5

100%

60°

High 69°

8 AM

63°

64°

Mostly Cloudy

97%
RAIN
***

0% Thunder
( 22% severe)

S 5

93%

61°

Mostly Cloudy

Rain

11 AM

66°

66°

Mostly Cloudy

S 7

93%

64°

2 PM

67°

67°

Mostly Cloudy

80%
RAIN
***

0% Thunder
( 14% severe)

SE 8

93%

65°

5 PM

68°

68°

Mostly Cloudy

SSE 6

93%

66°

8 PM

66°

66°

Mostly Cloudy

1%

0% Thunder
( 1% severe)

CALM

97%

65°

11 PM

65°

65°

Mostly Cloudy

SW 1

100%

65°

Monday
14 SEP 2026

2 AM

64°

65°

Mostly Cloudy

19%
RAIN
<.01 in

0% Thunder
( 3% severe)

WSW 5

100%

64°

Low 61°

5 AM

63°

63°

Mostly Cloudy

WNW 8

100%

63°

High 73°

8 AM

62°

61°

Partly Cloudy

2%

0% Thunder
( 0% severe)

WNW 9

93%

60°

Partly Cloudy

11 AM

69°

69°

Partly Cloudy

NW 14

61%

55°

2 PM

73°

73°

Clear

0%

0% Thunder
( 0% severe)

NW 15

43%

49°

5 PM

70°

70°

Clear

NW 13

44%

47°

8 PM

61°

60°

Clear

0%

0% Thunder
( 0% severe)

NW 8

60%

47°

11 PM

56°

55°

Clear

NNW 6

74%

48°


PORTSMOUTH, NH extended weather forecast
BAD DAY BAD DATE	BAD DAY BAD DATE	BAD DAY BAD DATE	BAD DAY BAD DATE	BAD DAY BAD DATE
Low 59°	Low 49°	Low 51°	Low 56°	Low 59°
High 73°	High 65°	High 74°	High 78°	High 72°

Mostly Cloudy 49% Rain	Clear 2% Rain	Partly Cloudy 23% Rain	Mostly Cloudy 31% Rain	Mostly Cloudy 42% Rain

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