PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
11:55 AM EDT AUG 22, 2026
Overcast 72°F
Feels Like:	72°F
Dewpoint:	59°F
Rel. Hum.:	64%
Visibility:	10 miles
Wind:	NNE at 8 mph
Pressure:	30.07 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
Cloudy. A slight chance of showers this morning, then a chance of showers this afternoon. Highs in the lower 70s. Northeast winds around 10 mph with gusts up to 20 mph. Chance of rain 40 percent.

TONIGHT
Cloudy with a 50 percent chance of showers. Patchy fog. Lows around 60. Northeast winds around 10 mph in the evening, becoming light and variable.

SUNDAY
Patchy fog in the morning. Mostly cloudy with a chance of showers. A slight chance of thunderstorms in the afternoon. Humid with highs in the upper 70s. Light and variable winds. Chance of rain 50 percent.

SUNDAY NIGHT
Partly cloudy. Humid with lows in the lower 60s. Light and variable winds.

MONDAY
Mostly sunny. Highs around 80. Light and variable winds, becoming southwest around 10 mph in the afternoon.

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

TUESDAY
Mostly sunny. Highs in the upper 70s.

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

WEDNESDAY
Mostly sunny. Highs in the lower 80s.

WEDNESDAY NIGHT
Mostly clear. Lows around 60.

THURSDAY
Partly sunny. Highs around 80.

THURSDAY NIGHT
Partly cloudy with a 40 percent chance of showers. Lows in the lower 60s.

FRIDAY
Partly sunny with a chance of showers. Highs around 80. Chance of rain 40 percent.

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 8/21/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Saturday
22 AUG 2026

2 AM

62°

62°

Mostly Cloudy

3%

0% Thunder
( 0% severe)

NNE 5

93%

60°

Low 61°

5 AM

62°

62°

Mostly Cloudy

NNE 7

90%

59°

High 74°

8 AM

64°

64°

Mostly Cloudy

34%
RAIN
.1–.25 in

0% Thunder
( 3% severe)

NE 8

84%

59°

Mostly Cloudy

Chance of Rain

11 AM

70°

70°

Mostly Cloudy

NE 10

68%

59°

2 PM

71°

71°

Mostly Cloudy

38%
RAIN
<.01 in

0% Thunder
( 3% severe)

NE 10

71%

61°

5 PM

70°

70°

Mostly Cloudy

NNE 10

71%

60°

8 PM

66°

66°

Mostly Cloudy

18%
RAIN
.01–.1 in

0% Thunder
( 1% severe)

NE 7

87%

62°

11 PM

64°

65°

Mostly Cloudy

NNE 3

100%

64°

Sunday
23 AUG 2026

2 AM

64°

66°

Overcast

36%
RAIN
>2 in

0% Thunder
( 6% severe)

CALM

100%

64°

Low 62°

5 AM

64°

66°

Overcast

CALM

100%

64°

High 79°

8 AM

65°

65°

Mostly Cloudy

52%
RAIN
***

0% Thunder
( 12% severe)

CALM

100%

65°

Mostly Cloudy

Rain Likely

11 AM

72°

72°

Mostly Cloudy

E 5

84%

67°

2 PM

76°

77°

Mostly Cloudy

20%
RAIN
.01–.1 in

0% Thunder
( 16% severe)

E 7

76%

68°

5 PM

76°

77°

Mostly Cloudy

SE 8

74%

67°

8 PM

71°

71°

Mostly Cloudy

11%
RAIN
<.01 in

0% Thunder
( 11% severe)

SSE 5

90%

68°

11 PM

68°

68°

Mostly Cloudy

S 5

100%

68°


PORTSMOUTH, NH extended weather forecast
Monday 24 AUG 2026	Tuesday 25 AUG 2026	Wednesday 26 AUG 2026	Thursday 27 AUG 2026	Friday 28 AUG 2026
Low 62°	Low 59°	Low 58°	Low 60°	Low 63°
High 83°	High 79°	High 81°	High 80°	High 79°

Mostly Cloudy 59% Rain	Mostly Cloudy 25% Rain	Partly Cloudy 13% Rain	Partly Cloudy 29% Rain	Overcast 62% Rain

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