PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
1:55 PM EDT SEP 19, 2026
Broken Clouds 61°F
Feels Like:	60°F
Dewpoint:	43°F
Rel. Hum.:	51%
Visibility:	10 miles
Wind:	SSE at 10 mph
Pressure:	30.19 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

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 AM EDT 9/19/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Saturday
19 SEP 2026

2 PM

64°

64°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

SE 6

41%

40°

High 65°

5 PM

62°

61°

Partly Cloudy

SSE 9

46%

41°

Partly Cloudy

8 PM

55°

54°

Partly Cloudy

0%

0% Thunder
( 0% severe)

SSE 6

61%

42°

11 PM

52°

52°

Partly Cloudy

SSW 3

74%

44°

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

37%
RAIN
.01–.1 in

0% Thunder
( 1% severe)

SSE 1

80%

45°

Mostly Cloudy

Rain Likely

11 AM

61°

60°

Mostly Cloudy

SSE 9

58%

46°

2 PM

61°

60°

Mostly Cloudy

80%
RAIN
***

0% Thunder
( 2% severe)

SSE 9

65%

49°

5 PM

59°

58°

Mostly Cloudy

E 8

75%

51°

8 PM

57°

56°

Mostly Cloudy

81%
RAIN
***

0% Thunder
( 2% severe)

E 7

83%

52°

11 PM

54°

53°

Overcast

NE 5

100%

54°

Monday
21 SEP 2026

2 AM

52°

49°

Overcast

25%
RAIN
.01–.1 in

0% Thunder
( 0% severe)

NNE 8

100%

52°

Low 49°

5 AM

50°

46°

Mostly Cloudy

N 10

100%

50°

High 66°

8 AM

51°

48°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

NA 9

96%

50°

Partly Cloudy

11 AM

61°

60°

Partly Cloudy

NNE 10

60%

47°

2 PM

65°

65°

Partly Cloudy

0%

0% Thunder
( 0% severe)

NE 8

50%

46°

5 PM

63°

63°

Partly Cloudy

ENE 7

52%

45°

8 PM

56°

56°

Partly Cloudy

NE 2

66%

45°


PORTSMOUTH, NH extended weather forecast
Tuesday 22 SEP 2026	Wednesday 23 SEP 2026	Thursday 24 SEP 2026	Friday 25 SEP 2026	Saturday 26 SEP 2026
Low 46°	Low 45°	Low 47°	Low 47°	Low 50°
High 60°	High 57°	High 56°	High 62°	High 70°

Partly Cloudy 8% Rain	Overcast 21% Rain	Overcast 72% Rain	Overcast 72% Rain	Overcast 41% Rain

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