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 23, 2026
Overcast 70°F
Feels Like:	70°F
Dewpoint:	64°F
Rel. Hum.:	81%
Visibility:	10 miles
Wind:	ENE at 6 mph
Pressure:	29.84 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
Patchy fog this morning. Mostly cloudy with a chance of showers. Isolated thunderstorms this afternoon. Highs in the mid 70s. Light and variable winds. Chance of rain 50 percent.

TONIGHT
Mostly cloudy. A chance of showers with isolated thunderstorms in the evening. Patchy fog. Humid with lows in the lower 60s. Light and variable winds. Chance of rain 50 percent.

MONDAY
Patchy fog in the morning. Mostly sunny. Highs in the lower 80s. Light and variable winds, becoming southwest around 10 mph in the afternoon.

MONDAY NIGHT
Partly cloudy in the evening, then clearing. Lows in the upper 50s. Southwest winds around 10 mph in the evening, becoming light and variable.

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

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 in the lower 80s.

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

FRIDAY
Partly sunny with a chance of showers. Highs in the lower 80s. Chance of rain 50 percent.

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

SATURDAY
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 8/23/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Sunday
23 AUG 2026

2 PM

75°

75°

Mostly Cloudy

25%
RAIN
.25–.5 in

0% Thunder
( 15% severe)

E 7

76%

67°

High 76°

5 PM

75°

75°

Mostly Cloudy

E 8

76%

67°

Mostly Cloudy

Chance of Rain

8 PM

70°

70°

Mostly Cloudy

27%
RAIN
<.01 in

0% Thunder
( 19% severe)

ESE 5

93%

68°

11 PM

68°

68°

Mostly Cloudy

SSE 3

100%

68°

Monday
24 AUG 2026

2 AM

67°

67°

Mostly Cloudy

2%

0% Thunder
( 1% severe)

SW 2

100%

67°

Low 64°

5 AM

65°

65°

Mostly Cloudy

WSW 2

100%

65°

High 83°

8 AM

66°

66°

Partly Cloudy

0%

0% Thunder
( 1% severe)

WSW 3

100%

66°

Partly Cloudy

11 AM

77°

79°

Clear

SW 7

62%

63°

2 PM

82°

82°

Partly Cloudy

3%

0% Thunder
( 8% severe)

SSW 10

44%

58°

5 PM

81°

81°

Partly Cloudy

SW 10

41%

55°

8 PM

72°

72°

Partly Cloudy

3%

0% Thunder
( 3% severe)

WSW 7

57%

56°

11 PM

66°

66°

Partly Cloudy

SW 6

75%

58°

Tuesday
25 AUG 2026

2 AM

62°

62°

Partly Cloudy

0%

0% Thunder
( 1% severe)

SW 5

90%

59°

Low 58°

5 AM

59°

59°

Partly Cloudy

WSW 5

93%

57°

High 81°

8 AM

64°

64°

Partly Cloudy

1%

0% Thunder
( 2% severe)

W 7

78%

57°

Partly Cloudy

11 AM

76°

78°

Clear

WSW 9

52%

57°

2 PM

80°

80°

Partly Cloudy

4%

0% Thunder
( 7% severe)

WSW 10

45%

57°

5 PM

80°

80°

Partly Cloudy

WSW 9

44%

56°

8 PM

72°

72°

Partly Cloudy

W 7

59%

57°


PORTSMOUTH, NH extended weather forecast
Wednesday 26 AUG 2026	Thursday 27 AUG 2026	Friday 28 AUG 2026	Saturday 29 AUG 2026	Sunday 30 AUG 2026
Low 59°	Low 60°	Low 63°	Low 61°	Low 55°
High 80°	High 82°	High 78°	High 78°	High 74°

Partly Cloudy 13% Rain	Partly Cloudy 21% Rain	Overcast 48% Rain	Mostly Cloudy 39% Rain	Partly Cloudy 24% Rain

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