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 AM EDT SEP 19, 2026
Scattered Clouds 63°F
Feels Like:	63°F
Dewpoint:	39°F
Rel. Hum.:	41%
Visibility:	10 miles
Wind:	NNE at 5 mph
Pressure:	30.23 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

TODAY
Mostly sunny. Highs in the mid 60s. Light and variable winds.

TONIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. Light and variable winds.

SUNDAY
Mostly cloudy. Rain in the afternoon. Highs in the lower 60s. South winds around 10 mph. Chance of rain 90 percent.

SUNDAY NIGHT
Rain. Lows in the upper 40s. Light and variable winds, becoming north around 10 mph after midnight. Chance of rain 90 percent.

MONDAY
Partly sunny. Highs in the mid 60s. Northeast winds around 10 mph.

MONDAY NIGHT
Partly cloudy. Lows in the mid 40s.

TUESDAY
Mostly cloudy in the morning, then becoming partly sunny. Highs in the lower 60s.

TUESDAY NIGHT
Partly cloudy. Lows in the mid 40s.

WEDNESDAY
Partly sunny. Highs in the lower 60s.

WEDNESDAY NIGHT
Partly cloudy. Lows in the mid 40s.

THURSDAY
Mostly cloudy. A chance of showers in the afternoon. Highs in the lower 60s. Chance of rain 30 percent.

THURSDAY NIGHT
Mostly cloudy with a 30 percent chance of showers. Lows in the upper 40s.

FRIDAY
Mostly cloudy in the morning, then becoming partly sunny. A 30 percent chance of showers. Highs 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 PM EDT 9/18/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Saturday
19 SEP 2026

2 AM

50°

47°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

NA 7

74%

42°

Low 46°

5 AM

47°

44°

Partly Cloudy

N 7

76%

40°

High 65°

8 AM

50°

48°

Clear

0%

0% Thunder
( 0% severe)

NA 6

68%

40°

Partly Cloudy

11 AM

61°

61°

Partly Cloudy

NE 5

42%

38°

2 PM

64°

64°

Partly Cloudy

0%

0% Thunder
( 0% severe)

ESE 6

40%

39°

5 PM

62°

61°

Clear

SE 9

46%

41°

8 PM

54°

53°

Partly Cloudy

0%

0% Thunder
( 0% severe)

SSE 6

61%

41°

11 PM

51°

50°

Partly Cloudy

S 3

74%

43°

Sunday
20 SEP 2026

2 AM

49°

49°

Partly Cloudy

0%

0% Thunder
( 0% severe)

CALM

83%

44°

Low 47°

5 AM

47°

46°

Partly Cloudy

CALM

89%

44°

High 64°

8 AM

51°

51°

Mostly Cloudy

11%
RAIN
<.01 in

0% Thunder
( 2% severe)

CALM

80%

45°

Mostly Cloudy

Rain Likely

11 AM

61°

60°

Mostly Cloudy

SSE 8

58%

46°

2 PM

62°

61°

Mostly Cloudy

77%
RAIN
***

0% Thunder
( 3% severe)

SSE 10

58%

47°

5 PM

60°

59°

Mostly Cloudy

ESE 8

67%

49°

8 PM

56°

55°

Mostly Cloudy

79%
RAIN
***

0% Thunder
( 3% severe)

E 6

83%

51°

11 PM

54°

53°

Mostly Cloudy

ENE 5

96%

53°


PORTSMOUTH, NH extended weather forecast
Monday 21 SEP 2026	Tuesday 22 SEP 2026	Wednesday 23 SEP 2026	Thursday 24 SEP 2026	Friday 25 SEP 2026
Low 49°	Low 46°	Low 45°	Low 47°	Low 47°
High 65°	High 60°	High 57°	High 56°	High 62°

Mostly Cloudy 74% Rain	Partly Cloudy 8% Rain	Overcast 21% Rain	Overcast 72% Rain	Overcast 72% Rain

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