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 PM EDT AUG 19, 2026
Broken Clouds 72°F
Feels Like:	72°F
Dewpoint:	63°F
Rel. Hum.:	73%
Visibility:	10 miles
Wind:	Calm
Pressure:	29.87 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
Mostly clear in the evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the mid 60s. Light and variable winds.

THURSDAY
Patchy fog in the morning. Partly sunny. Highs in the lower 80s. Light and variable winds.

THURSDAY NIGHT
Mostly cloudy with a chance of showers in the evening, then partly cloudy after midnight. Lows around 60. Light and variable winds. Chance of rain 30 percent.

FRIDAY
Mostly sunny. Highs in the upper 70s. Light and variable winds.

FRIDAY NIGHT
Partly cloudy. A chance of showers after midnight. Lows in the upper 50s. Chance of rain 30 percent.

SATURDAY
Mostly cloudy with a 50 percent chance of showers. Highs in the mid 70s.

SATURDAY NIGHT
Mostly cloudy with a 50 percent chance of showers. Lows in the lower 60s.

SUNDAY
A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 70s. Chance of rain 60 percent.

SUNDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the lower 60s. Chance of rain 50 percent.

MONDAY
Mostly sunny. Highs in the lower 80s.

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

TUESDAY
Mostly sunny. Highs around 80.

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 8/19/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
19 AUG 2026

2 PM

83°

84°

Partly Cloudy

1%

0% Thunder
( 2% severe)

SSE 8

51%

63°

High 84°

5 PM

82°

83°

Partly Cloudy

S 9

53%

63°

Partly Cloudy

8 PM

75°

75°

Clear

1%

0% Thunder
( 1% severe)

SW 6

64%

62°

11 PM

69°

69°

Partly Cloudy

WSW 5

76%

61°

Thursday
20 AUG 2026

2 AM

66°

66°

Partly Cloudy

1%

0% Thunder
( 0% severe)

WSW 3

84%

61°

Low 64°

5 AM

64°

65°

Partly Cloudy

W 3

90%

61°

High 85°

8 AM

69°

69°

Partly Cloudy

1%

0% Thunder
( 0% severe)

WNW 3

78%

62°

Mostly Cloudy

11 AM

80°

81°

Partly Cloudy

NA 3

52%

61°

2 PM

82°

82°

Mostly Cloudy

16%
RAIN
1–2 in

0% Thunder
( 0% severe)

SSE 6

46%

59°

5 PM

79°

80°

Mostly Cloudy

S 7

50%

59°

8 PM

72°

72°

Mostly Cloudy

7%

0% Thunder
( 0% severe)

W 3

68%

61°

11 PM

66°

66°

Mostly Cloudy

CALM

84%

61°

Friday
21 AUG 2026

2 AM

63°

64°

Partly Cloudy

18%
RAIN
<.01 in

0% Thunder
( 0% severe)

NW 3

87%

59°

Low 59°

5 AM

60°

60°

Partly Cloudy

N 5

90%

57°

High 81°

8 AM

65°

65°

Partly Cloudy

2%

0% Thunder
( 0% severe)

NNE 5

78%

58°

Partly Cloudy

11 AM

77°

79°

Partly Cloudy

ENE 8

48%

56°

2 PM

79°

80°

Partly Cloudy

0%

0% Thunder
( 1% severe)

E 9

44%

55°

5 PM

76°

78°

Partly Cloudy

ESE 9

46%

54°

8 PM

68°

68°

Partly Cloudy

ESE 3

68%

57°


PORTSMOUTH, NH extended weather forecast
Saturday 22 AUG 2026	Sunday 23 AUG 2026	Monday 24 AUG 2026	Tuesday 25 AUG 2026	Wednesday 26 AUG 2026
Low 58°	Low 59°	Low 59°	Low 56°	Low 60°
High 74°	High 74°	High 79°	High 76°	High 78°

Mostly Cloudy 18% Rain	Overcast 51% Rain	Partly Cloudy 33% Rain	Partly Cloudy 19% Rain	Overcast 39% Rain

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