PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
11:55 AM EST MAR 4, 2026
Clear 46°F
Feels Like:	43°F
Dewpoint:	34°F
Rel. Hum.:	63%
Visibility:	10 miles
Wind:	S at 5 mph
Pressure:	30.20 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 2025 Hurricanes	PORTSMOUTH, NH 03803 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TODAY
Mostly sunny. Highs in the upper 40s. Light and variable winds.

TONIGHT
Partly cloudy. Lows in the mid 20s. Light and variable winds.

THURSDAY
Partly sunny in the morning, then mostly cloudy with a slight chance of rain in the afternoon. Highs in the lower 40s. Light and variable winds, becoming northeast around 10 mph with gusts up to 20 mph in the afternoon. Chance of rain 20 percent.

THURSDAY NIGHT
A chance of rain, snow and sleet in the evening, then snow, sleet and rain after midnight. Light snow accumulation. Lows in the lower 30s. Northeast winds around 10 mph with gusts up to 20 mph. Chance of precipitation 80 percent.

FRIDAY
Cloudy. Sleet, rain and snow likely in the morning, then a chance of rain and sleet in the afternoon. Little or no additional snow accumulation. Highs in the upper 30s. Northeast winds around 10 mph with gusts up to 20 mph. Chance of precipitation 70 percent.

FRIDAY NIGHT
Cloudy. Lows around 30.

SATURDAY
Cloudy in the morning, then becoming partly sunny. Highs in the lower 50s.

SATURDAY NIGHT
Mostly cloudy with a 50 percent chance of rain. Lows in the upper 30s.

SUNDAY
Partly sunny. Highs in the lower 50s.

SUNDAY NIGHT
Partly cloudy. Lows in the lower 30s.

MONDAY
Mostly sunny. Highs in the mid 50s.

MONDAY NIGHT
Mostly clear. Lows in the upper 30s.

TUESDAY
Mostly sunny. Highs around 60.

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 7:00 AM EST 3/ 4/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
4 MAR 2026

1 PM

47°

45°

Clear

0%

0% Thunder
( 0% severe)

WSW 5

51%

30°

High 49°

4 PM

48°

46°

Clear

WSW 5

56%

33°

Partly Cloudy

7 PM

39°

37°

Partly Cloudy

0%

0% Thunder
( 0% severe)

SW 3

76%

32°

10 PM

35°

33°

Partly Cloudy

WSW 2

78%

29°

Thursday
5 MAR 2026

1 AM

31°

28°

Partly Cloudy

1%

0% Thunder
( 0% severe)

WSW 1

81%

26°

Low 24°

4 AM

28°

25°

Partly Cloudy

W 1

84%

24°

High 41°

7 AM

28°

25°

Mostly Cloudy

2%

0% Thunder
( 1% severe)

NNW 2

88%

25°

Mostly Cloudy

10 AM

38°

34°

Mostly Cloudy

NE 6

73%

30°

1 PM

39°

32°

Mostly Cloudy

8%

0% Thunder
( 1% severe)

ENE 12

67%

29°

4 PM

36°

28°

Mostly Cloudy

ENE 12

69%

27°

7 PM

33°

25°

Mostly Cloudy

44%
RAIN/SNOW
***

0% Thunder
( 1% severe)

ENE 9

78%

27°

10 PM

32°

24°

Mostly Cloudy

ENE 10

78%

26°

Friday
6 MAR 2026

1 AM

30°

21°

Mostly Cloudy

80%
SNOW
***

0% Thunder
( 3% severe)

ENE 10

84%

26°

Low 26°

4 AM

30°

21°

Mostly Cloudy

ENE 10

84%

26°

High 35°

7 AM

30°

21°

Mostly Cloudy

75%
SNOW/ICE
***

0% Thunder
( 2% severe)

NE 10

84%

26°

Mostly Cloudy

Snow & Ice Likely, Chance of Rain

10 AM

31°

22°

Mostly Cloudy

NE 10

84%

27°

1 PM

33°

24°

Mostly Cloudy

29%
RAIN/ICE
.01–.1 in

0% Thunder
( 2% severe)

ENE 12

78%

27°

4 PM

34°

27°

Mostly Cloudy

ENE 8

78%

28°

7 PM

32°

27°

Mostly Cloudy

ENE 5

85%

28°


PORTSMOUTH, NH extended weather forecast
Saturday 7 MAR 2026	Sunday 8 MAR 2026	Monday 9 MAR 2026	Tuesday 10 MAR 2026	Wednesday 11 MAR 2026
Low 29°	Low 37°	Low 28°	Low 38°	Low 41°
High 44°	High 54°	High 55°	High 58°	High 51°

Overcast 34% Rain/Ice	Mostly Cloudy 53% Rain	Partly Cloudy 18% Rain	Overcast 43% Rain	Overcast 55% Rain

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