PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
7:55 PM EDT AUG 16, 2026
Broken Clouds 72°F
Feels Like:	72°F
Dewpoint:	63°F
Rel. Hum.:	73%
Visibility:	10 miles
Wind:	SE at 6 mph
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 2026 Hurricanes	PORTSMOUTH, NH 03803 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TONIGHT
Partly cloudy with a slight chance of showers in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the mid 60s. South winds around 10 mph. Chance of rain 50 percent.

MONDAY
A chance of showers in the morning, then showers likely in the afternoon. Humid with highs in the mid 70s. South winds around 10 mph. Chance of rain 60 percent.

MONDAY NIGHT
Mostly cloudy. A chance of showers in the evening. Patchy fog. Humid with lows in the mid 60s. Light and variable winds. Chance of rain 30 percent.

TUESDAY
Cloudy in the morning, then becoming partly sunny. Patchy fog in the morning. Humid with highs in the upper 70s. 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. A chance of showers in the afternoon. Highs around 80. Chance of rain 40 percent.

THURSDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the upper 50s. Chance of rain 30 percent.

FRIDAY
Mostly sunny. Highs in the upper 70s.

FRIDAY NIGHT
Mostly clear in the evening, then becoming 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 AM EDT 8/16/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Sunday
16 AUG 2026

2 PM

77°

79°

Partly Cloudy

1%

0% Thunder
( 0% severe)

SE 9

52%

58°

High 78°

5 PM

76°

78°

Mostly Cloudy

SE 13

56%

59°

Mostly Cloudy

Chance of Rain

8 PM

72°

72°

Mostly Cloudy

24%
RAIN
<.01 in

0% Thunder
( 1% severe)

SSE 10

66%

60°

11 PM

70°

70°

Mostly Cloudy

S 9

76%

62°

Monday
17 AUG 2026

2 AM

68°

68°

Mostly Cloudy

57%
RAIN
.25–.5 in

0% Thunder
( 5% severe)

S 8

87%

64°

Low 65°

5 AM

67°

67°

Mostly Cloudy

S 10

93%

65°

High 76°

8 AM

67°

67°

Mostly Cloudy

66%
RAIN
>2 in

0% Thunder
( 8% severe)

S 10

93%

65°

Mostly Cloudy

Rain Likely

11 AM

71°

71°

Mostly Cloudy

S 12

84%

66°

2 PM

72°

72°

Mostly Cloudy

34%
RAIN
.25–.5 in

0% Thunder
( 6% severe)

S 10

81%

66°

5 PM

73°

73°

Mostly Cloudy

SSE 9

81%

67°

8 PM

70°

70°

Mostly Cloudy

22%
RAIN
.01–.1 in

0% Thunder
( 8% severe)

SE 6

90%

67°

11 PM

67°

67°

Mostly Cloudy

ENE 2

100%

67°

Tuesday
18 AUG 2026

2 AM

67°

67°

Mostly Cloudy

5%

0% Thunder
( 5% severe)

CALM

100%

67°

Low 64°

5 AM

66°

66°

Mostly Cloudy

NNE 3

100%

66°

High 81°

8 AM

68°

68°

Mostly Cloudy

4%

0% Thunder
( 5% severe)

NNE 6

97%

67°

Mostly Cloudy

11 AM

75°

75°

Mostly Cloudy

NNE 6

79%

68°

2 PM

78°

80°

Mostly Cloudy

8%

0% Thunder
( 8% severe)

ENE 6

69%

67°

5 PM

77°

79°

Mostly Cloudy

E 7

71%

67°

8 PM

70°

70°

Partly Cloudy

E 2

87%

66°


PORTSMOUTH, NH extended weather forecast
Wednesday 19 AUG 2026	Thursday 20 AUG 2026	Friday 21 AUG 2026	Saturday 22 AUG 2026	Sunday 23 AUG 2026
Low 62°	Low 64°	Low 59°	Low 57°	Low 60°
High 82°	High 80°	High 75°	High 74°	High 80°

Overcast 22% Rain	Overcast 44% Rain	Mostly Cloudy 29% Rain	Overcast 31% Rain	Partly Cloudy 34% Rain

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