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 AUG 26, 2026
Scattered Clouds 81°F
Feels Like:	81°F
Dewpoint:	59°F
Rel. Hum.:	47%
Visibility:	10 miles
Wind:	S at 10 mph
Pressure:	30.02 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 upper 70s. Light and variable winds, becoming southeast around 10 mph this afternoon.

TONIGHT
Partly cloudy. Lows in the lower 60s. Light and variable winds.

THURSDAY
Partly sunny. A slight chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 80s. Light and variable winds, becoming south around 10 mph with gusts up to 20 mph in the afternoon. Chance of rain 20 percent.

THURSDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers after midnight. Humid with lows in the upper 60s. South winds around 10 mph with gusts up to 20 mph in the evening, becoming light and variable. Chance of rain 40 percent.

FRIDAY
Partly sunny with a chance of showers. Humid with highs in the lower 80s. Light and variable winds. Chance of rain 50 percent.

FRIDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows around 60. Chance of rain 40 percent.

SATURDAY
Mostly sunny. Highs in the upper 70s.

SATURDAY NIGHT
Mostly clear. Lows in the upper 50s.

SUNDAY
Mostly sunny. Highs in the lower 80s.

SUNDAY NIGHT
Partly cloudy. Lows in the mid 60s.

MONDAY
Partly sunny. Highs in the mid 80s.

MONDAY NIGHT
Partly cloudy. Lows in the mid 60s.

TUESDAY
Partly sunny. Highs around 80.

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 8/26/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
26 AUG 2026

2 PM

79°

80°

Partly Cloudy

0%

0% Thunder
( 1% severe)

SSE 8

52%

60°

High 80°

5 PM

76°

78°

Partly Cloudy

SSE 9

58%

60°

Partly Cloudy

8 PM

70°

70°

Partly Cloudy

0%

0% Thunder
( 0% severe)

S 7

71%

60°

11 PM

66°

66°

Mostly Cloudy

S 5

90%

63°

Thursday
27 AUG 2026

2 AM

65°

65°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

SW 1

93%

63°

Low 63°

5 AM

63°

64°

Mostly Cloudy

SSW 2

97%

62°

High 84°

8 AM

67°

67°

Mostly Cloudy

7%

0% Thunder
( 4% severe)

SSW 3

84%

62°

Mostly Cloudy

11 AM

78°

80°

Mostly Cloudy

S 9

62%

64°

2 PM

81°

83°

Partly Cloudy

11%
RAIN
<.01 in

0% Thunder
( 17% severe)

SSE 13

60%

66°

5 PM

80°

82°

Partly Cloudy

SSE 13

60%

65°

8 PM

75°

75°

Partly Cloudy

12%
RAIN
<.01 in

0% Thunder
( 17% severe)

S 10

66%

63°

11 PM

70°

70°

Partly Cloudy

S 8

87%

66°

Friday
28 AUG 2026

2 AM

70°

70°

Partly Cloudy

16%
RAIN
<.01 in

0% Thunder
( 13% severe)

S 7

90%

67°

Low 68°

5 AM

68°

68°

Mostly Cloudy

S 6

97%

67°

High 83°

8 AM

70°

70°

Mostly Cloudy

34%
RAIN
.25–.5 in

0% Thunder
( 18% severe)

S 6

93%

68°

Mostly Cloudy

Chance of Rain

11 AM

77°

79°

Mostly Cloudy

SSW 6

74%

68°

2 PM

80°

83°

Partly Cloudy

40%
RAIN
.01–.1 in

0% Thunder
( 26% severe)

S 7

67%

68°

5 PM

79°

81°

Partly Cloudy

SSW 6

69%

68°

8 PM

73°

73°

Partly Cloudy

WSW 3

76%

65°


PORTSMOUTH, NH extended weather forecast
Saturday 29 AUG 2026	Sunday 30 AUG 2026	Monday 31 AUG 2026	Tuesday 1 SEP 2026	Wednesday 2 SEP 2026
Low 59°	Low 56°	Low 63°	Low 62°	Low 60°
High 78°	High 83°	High 78°	High 79°	High 74°

Partly Cloudy 15% Rain	Mostly Cloudy 23% Rain	Overcast 35% Rain	Overcast 56% Rain	Overcast 39% Rain

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