PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
9:55 AM EDT AUG 16, 2026
Scattered Clouds 70°F
Feels Like:	70°F
Dewpoint:	54°F
Rel. Hum.:	57%
Visibility:	10 miles
Wind:	SSW at 5 mph
Pressure:	30.15 inches
Last 72 hours
Local Area Snow Depth
New Hampshire Current Weather
New Hampshire MOS Forecast Weather

Weather Map

(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
Partly sunny. Highs in the upper 70s. Light and variable winds, becoming southeast around 10 mph with gusts up to 20 mph this afternoon.

TONIGHT
Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the lower 60s. South winds around 10 mph. Chance of rain 40 percent.

MONDAY
Showers likely. A slight chance of thunderstorms in the afternoon. Humid with highs in the mid 70s. South winds around 10 mph with gusts up to 20 mph. Chance of rain 70 percent.

MONDAY NIGHT
Mostly cloudy. Humid with lows in the lower 60s. Light and variable winds.

TUESDAY
Partly sunny. Humid with highs around 80. Light and variable winds.

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

WEDNESDAY
Partly sunny. Highs in the lower 80s.

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

THURSDAY
Partly sunny with a 40 percent chance of showers. Highs in the lower 80s.

THURSDAY NIGHT
Partly cloudy with a chance of showers in the evening, then mostly clear after midnight. Lows in the upper 50s. Chance of rain 30 percent.

FRIDAY
Mostly sunny. Highs in the upper 70s.

FRIDAY NIGHT
Partly cloudy. Lows in the upper 50s.

SATURDAY
Partly sunny. Highs in the upper 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 PM EDT 8/15/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Sunday
16 AUG 2026

2 AM

60°

60°

Partly Cloudy

0%

0% Thunder
( 0% severe)

NNW 5

81%

54°

Low 56°

5 AM

57°

57°

Partly Cloudy

NNW 3

86%

53°

High 80°

8 AM

63°

64°

Partly Cloudy

0%

0% Thunder
( 0% severe)

CALM

72%

54°

Partly Cloudy

11 AM

75°

75°

Partly Cloudy

SE 5

52%

56°

2 PM

77°

79°

Partly Cloudy

1%

0% Thunder
( 0% severe)

SE 9

50%

57°

5 PM

76°

78°

Partly Cloudy

SSE 12

54%

58°

8 PM

72°

72°

Mostly Cloudy

3%

0% Thunder
( 1% severe)

S 9

66%

60°

11 PM

69°

69°

Mostly Cloudy

S 9

76%

61°

Monday
17 AUG 2026

2 AM

68°

68°

Mostly Cloudy

56%
RAIN
.25–.5 in

0% Thunder
( 4% severe)

S 8

84%

63°

Low 65°

5 AM

67°

67°

Mostly Cloudy

S 10

90%

64°

High 77°

8 AM

67°

67°

Mostly Cloudy

85%
RAIN
***

0% Thunder
( 11% severe)

S 10

90%

64°

Mostly Cloudy

Rain Likely

11 AM

71°

71°

Mostly Cloudy

S 12

84%

66°

2 PM

73°

73°

Mostly Cloudy

67%
RAIN
***

0% Thunder
( 17% severe)

SSE 12

81%

67°

5 PM

74°

74°

Mostly Cloudy

ESE 9

76%

66°

8 PM

70°

70°

Mostly Cloudy

22%
RAIN
.01–.1 in

0% Thunder
( 6% severe)

ENE 7

87%

66°

11 PM

67°

67°

Mostly Cloudy

N 5

100%

67°


PORTSMOUTH, NH extended weather forecast
Tuesday 18 AUG 2026	Wednesday 19 AUG 2026	Thursday 20 AUG 2026	Friday 21 AUG 2026	Saturday 22 AUG 2026
Low 63°	Low 62°	Low 64°	Low 59°	Low 57°
High 74°	High 82°	High 80°	High 75°	High 74°

Overcast 66% Rain	Overcast 22% Rain	Overcast 44% Rain	Mostly Cloudy 29% Rain	Overcast 31% Rain

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