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 JUL 17, 2026
Broken Clouds 82°F
Feels Like:	81°F
Dewpoint:	48°F
Rel. Hum.:	31%
Visibility:	10 miles
Wind:	WNW at 13 mph, gusts to 20
Pressure:	29.96 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 lower 80s. Northwest winds around 10 mph.

TONIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s. Light and variable winds.

SATURDAY
Partly sunny in the morning, then mostly cloudy with scattered showers with isolated thunderstorms in the afternoon. Areas of smoke. Highs in the lower 80s. Light and variable winds, becoming south 10 to 15 mph with gusts up to 25 mph in the afternoon. Chance of rain 50 percent.

SATURDAY NIGHT
Scattered thunderstorms in the evening. Areas of smoke in the evening. Showers likely. Humid with lows in the mid 60s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent.

SUNDAY
Mostly sunny. Less humid with highs in the lower 80s. Northwest winds 10 to 15 mph with gusts up to 25 mph.

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

MONDAY
Mostly sunny. Highs around 80.

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

TUESDAY
Partly sunny. A chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 30 percent.

TUESDAY NIGHT
Showers. Lows in the mid 60s. Chance of rain 80 percent.

WEDNESDAY
Showers likely, mainly in the morning. Warm with highs in the mid 80s. Chance of rain 70 percent.

WEDNESDAY NIGHT
Partly cloudy with a chance of showers in the evening, then mostly clear after midnight. Lows in the lower 60s. Chance of rain 40 percent.

THURSDAY
Mostly sunny. Highs in the lower 80s.

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 7/17/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Friday
17 JUL 2026

2 PM

80°

80°

Partly Cloudy

0%

0% Thunder
( 1% severe)

WNW 10

35%

50°

High 82°

5 PM

81°

80°

Clear

WNW 10

30%

47°

Partly Cloudy

8 PM

73°

73°

Partly Cloudy

0%

0% Thunder
( 1% severe)

WNW 5

44%

50°

11 PM

65°

65°

Partly Cloudy

CALM

58%

50°

Saturday
18 JUL 2026

2 AM

61°

62°

Mostly Cloudy

2%

0% Thunder
( 0% severe)

CALM

72%

52°

Low 59°

5 AM

59°

60°

Partly Cloudy

CALM

78%

52°

High 87°

8 AM

67°

67°

Partly Cloudy

3%

0% Thunder
( 2% severe)

CALM

65%

55°

Partly Cloudy

Chance of Rain

11 AM

80°

81°

Partly Cloudy

S 9

47%

58°

2 PM

85°

86°

Partly Cloudy

46%
RAIN
.1–.25 in

0% Thunder
( 22% severe)

S 15

46%

62°

5 PM

80°

82°

Mostly Cloudy

SSW 17

62%

66°

8 PM

75°

75°

Mostly Cloudy

74%
RAIN
***

0% Thunder
( 22% severe)

SSW 13

76%

67°

11 PM

71°

71°

Mostly Cloudy

SSW 12

97%

70°

Sunday
19 JUL 2026

2 AM

70°

70°

Mostly Cloudy

6%

0% Thunder
( 7% severe)

SW 10

100%

70°

Low 66°

5 AM

67°

67°

Mostly Cloudy

W 12

97%

66°

High 82°

8 AM

69°

69°

Partly Cloudy

0%

0% Thunder
( 0% severe)

WNW 13

73%

60°

Clear

11 AM

77°

79°

Clear

WNW 16

47%

55°

2 PM

80°

80°

Clear

0%

0% Thunder
( 2% severe)

WNW 16

39%

53°

5 PM

79°

79°

Clear

WNW 14

38%

51°

8 PM

72°

72°

Clear

NW 8

49%

52°


PORTSMOUTH, NH extended weather forecast
Monday 20 JUL 2026	Tuesday 21 JUL 2026	Wednesday 22 JUL 2026	Thursday 23 JUL 2026	Friday 24 JUL 2026
Low 57°	Low 61°	Low 64°	Low 63°	Low 63°
High 78°	High 77°	High 82°	High 80°	High 80°

Clear 5% Rain	Mostly Cloudy 34% Rain	Overcast 73% Rain	Partly Cloudy 31% Rain	Mostly Cloudy 37% Rain

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