PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
2:55 AM EDT SEP 18, 2025
Broken Clouds 59°F
Feels Like:	60°F
Dewpoint:	57°F
Rel. Hum.:	93%
Visibility:	10 miles
Wind:	NW at 3 mph
Pressure:	30.00 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 2025 Hurricanes	PORTSMOUTH, NH 03803 Weather Forecast	Snowfall Forecast pages Snow Depth pages

REST OF TONIGHT
Cloudy with scattered showers with isolated thunderstorms. Patchy fog. Lows in the mid 50s. Light and variable winds. Chance of rain 50 percent.

THURSDAY
Partly sunny. Scattered showers with isolated thunderstorms in the morning. Highs in the upper 70s. Light and variable winds. Chance of rain 30 percent.

THURSDAY NIGHT
Mostly clear. Lows in the upper 50s. Light and variable winds.

FRIDAY
Mostly sunny. Highs in the mid 70s. Northwest winds around 10 mph.

FRIDAY NIGHT
Clear. Lows in the mid 40s. Light and variable winds.

SATURDAY
Sunny. Highs in the upper 60s.

SATURDAY NIGHT
Mostly clear. Lows in the mid 40s.

SUNDAY
Mostly sunny. Highs in the upper 60s.

SUNDAY NIGHT
Mostly clear. Lows in the upper 40s.

MONDAY
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 lower 80s.

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

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 9/17/2025

DAY/DATE &
WEATHER FORECAST SUMMARY

Thursday
18 SEP 2025

2 AM

59°

60°

Mostly Cloudy

40%
RAIN
<.01 in

0% Thunder
( 13% severe)

N 1

93%

57°

Low 57°

5 AM

58°

59°

Mostly Cloudy

N 1

96%

57°

High 79°

8 AM

59°

60°

Mostly Cloudy

9%

0% Thunder
( 1% severe)

N 1

96%

58°

Decreasing Clouds

11 AM

71°

71°

Partly Cloudy

N 1

66%

59°

2 PM

77°

79°

Partly Cloudy

4%

0% Thunder
( 0% severe)

S 3

50%

57°

5 PM

75°

75°

Clear

SSE 7

58%

59°

8 PM

66°

66°

Partly Cloudy

1%

0% Thunder
( 0% severe)

S 6

84%

61°

11 PM

63°

64°

Partly Cloudy

WSW 5

84%

58°

Friday
19 SEP 2025

2 AM

62°

62°

Clear

1%

0% Thunder
( 0% severe)

W 6

78%

55°

Low 58°

5 AM

60°

59°

Clear

WNW 7

87%

56°

High 77°

8 AM

63°

63°

Clear

0%

0% Thunder
( 0% severe)

NW 8

84%

58°

Clear

11 AM

73°

73°

Clear

NW 9

49%

53°

2 PM

76°

78°

Clear

0%

0% Thunder
( 0% severe)

NW 9

37%

48°

5 PM

73°

73°

Clear

NW 10

37%

45°

8 PM

64°

64°

Clear

0%

0% Thunder
( 0% severe)

NNW 8

48%

44°

11 PM

58°

57°

Clear

N 7

55%

42°


PORTSMOUTH, NH extended weather forecast
Saturday 20 SEP 2025	Sunday 21 SEP 2025	Monday 22 SEP 2025	Tuesday 23 SEP 2025	Wednesday 24 SEP 2025
Low 47°	Low 44°	Low 48°	Low 54°	Low 59°
High 63°	High 68°	High 71°	High 81°	High 72°

Clear 1% Rain	Clear 6% Rain	Partly Cloudy 11% Rain	Partly Cloudy 28% Rain	Mostly Cloudy 37% Rain

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