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 PM EDT MAY 29, 2026
Broken Clouds 59°F
Feels Like:	58°F
Dewpoint:	50°F
Rel. Hum.:	72%
Visibility:	10 miles
Wind:	ESE at 8 mph
Pressure:	29.81 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
Partly sunny. A chance of rain this afternoon. Highs in the mid 60s. Light and variable winds, becoming southeast around 10 mph this afternoon. Chance of rain 50 percent.

TONIGHT
Rain with a slight chance of thunderstorms. Lows in the mid 40s. South winds around 10 mph with gusts up to 20 mph, becoming east 15 to 20 mph with gusts up to 45 mph after midnight. Chance of rain near 100 percent.

SATURDAY
Rain. Highs in the mid 50s. Northeast winds 15 to 25 mph. Gusts up to 50 mph, decreasing to 40 mph in the afternoon. Chance of rain near 100 percent.

SATURDAY NIGHT
Partly cloudy in the evening, then clearing. Lows in the lower 40s. North winds around 10 mph with gusts up to 20 mph in the evening, becoming light and variable.

SUNDAY
Partly sunny. Highs in the upper 60s. Light and variable winds.

SUNDAY NIGHT
Partly cloudy with a chance of showers. Lows in the upper 40s. Chance of rain 40 percent.

MONDAY
Showers likely, mainly in the morning. Highs in the mid 60s. Chance of rain 60 percent.

MONDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the mid 40s. Chance of rain 50 percent.

TUESDAY
Partly sunny with a 50 percent chance of showers. Highs in the lower 60s.

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

WEDNESDAY
Partly sunny with a 30 percent chance of showers. Highs in the mid 60s.

WEDNESDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows around 50. Chance of rain 30 percent.

THURSDAY
Partly sunny. Highs in the lower 70s.

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 5/29/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Friday
29 MAY 2026

2 PM

65°

65°

Mostly Cloudy

86%
RAIN
.1–.25 in

0% Thunder
( 7% severe)

SE 8

48%

45°

High 66°

5 PM

61°

60°

Mostly Cloudy

SSE 10

67%

50°

Mostly Cloudy

Rain

8 PM

56°

54°

Mostly Cloudy

97%
RAIN
***

0% Thunder
( 22% severe)

S 9

83%

51°

11 PM

54°

51°

Mostly Cloudy

SSE 12

93%

52°

Saturday
30 MAY 2026

2 AM

50°

45°

Mostly Cloudy

95%
RAIN
***

0% Thunder
( 14% severe)

N 13

96%

49°

Low 43°

5 AM

47°

39°

Mostly Cloudy

NE 23

96%

46°

High 55°

8 AM

45°

36°

Mostly Cloudy

94%
RAIN
***

0% Thunder
( 7% severe)

NNE 24

93%

43°

Mostly Cloudy

Rain

Breezy

11 AM

45°

37°

Mostly Cloudy

NNE 21

82%

40°

2 PM

48°

41°

Mostly Cloudy

39%
RAIN
.01–.1 in

0% Thunder
( 3% severe)

NNE 18

74%

40°

5 PM

52°

48°

Mostly Cloudy

N 13

61%

39°

8 PM

51°

50°

Partly Cloudy

0%

0% Thunder
( 0% severe)

N 3

66%

40°

11 PM

46°

45°

Mostly Cloudy

NNW 2

79%

40°

Sunday
31 MAY 2026

2 AM

44°

42°

Partly Cloudy

0%

0% Thunder
( 0% severe)

NW 3

82%

39°

Low 42°

5 AM

42°

39°

Partly Cloudy

WNW 5

89%

39°

High 69°

8 AM

52°

52°

Partly Cloudy

2%

0% Thunder
( 4% severe)

NW 3

69%

42°

Mostly Cloudy

Chance of Rain

11 AM

64°

66°

Partly Cloudy

NNW 2

45%

42°

2 PM

66°

66°

Mostly Cloudy

20%
RAIN
<.01 in

0% Thunder
( 12% severe)

S 7

43%

43°

5 PM

63°

63°

Mostly Cloudy

E 7

54%

46°

8 PM

58°

58°

Mostly Cloudy

SSW 5

67%

47°


PORTSMOUTH, NH extended weather forecast
Monday 1 JUN 2026	Tuesday 2 JUN 2026	Wednesday 3 JUN 2026	Thursday 4 JUN 2026	Friday 5 JUN 2026
Low 52°	Low 51°	Low 53°	Low 53°	Low 55°
High 63°	High 61°	High 66°	High 69°	High 74°

Overcast 82% Rain	Overcast 82% Rain	Overcast 69% Rain	Overcast 55% Rain	Mostly Cloudy 43% Rain

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