PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
4:55 PM EDT AUG 18, 2025
Broken Clouds 68°F
Feels Like:	68°F
Dewpoint:	46°F
Rel. Hum.:	45%
Visibility:	10 miles
Wind:	Calm
Pressure:	30.18 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 2025 Hurricanes	PORTSMOUTH, NH 03803 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TONIGHT
Partly cloudy. Lows in the lower 50s. Light and variable winds.

TUESDAY
Partly sunny. Highs in the lower 70s. Light and variable winds.

TUESDAY NIGHT
Partly cloudy. Lows in the mid 50s. Light and variable winds.

WEDNESDAY
Partly sunny. A chance of showers in the afternoon. Highs in the lower 70s. Light and variable winds, becoming southeast around 10 mph in the afternoon. Chance of rain 40 percent.

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

THURSDAY
Mostly sunny. Highs in the mid 70s.

THURSDAY NIGHT
Mostly clear. Lows in the mid 50s.

FRIDAY
Mostly sunny. Highs in the upper 70s.

FRIDAY NIGHT
Mostly clear. Lows around 60.

SATURDAY
Mostly sunny. Highs in the lower 80s.

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

SUNDAY
Partly sunny. A chance of showers in the afternoon. Highs in the lower 80s. 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 AM EDT 8/18/2025

DAY/DATE &
WEATHER FORECAST SUMMARY

Monday
18 AUG 2025

2 PM

72°

72°

Partly Cloudy

0%

0% Thunder
( 0% severe)

E 8

35%

43°

High 73°

5 PM

71°

71°

Partly Cloudy

SE 7

38%

44°

Partly Cloudy

8 PM

63°

64°

Partly Cloudy

0%

0% Thunder
( 0% severe)

SSE 3

56%

47°

11 PM

59°

60°

Partly Cloudy

W 1

69%

49°

Tuesday
19 AUG 2025

2 AM

56°

56°

Partly Cloudy

0%

0% Thunder
( 0% severe)

N 2

77%

49°

Low 53°

5 AM

55°

55°

Mostly Cloudy

N 2

77%

48°

High 73°

8 AM

61°

62°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

NE 3

65%

49°

Mostly Cloudy

11 AM

70°

70°

Mostly Cloudy

E 6

44%

47°

2 PM

72°

72°

Partly Cloudy

1%

0% Thunder
( 1% severe)

ESE 8

39%

46°

5 PM

70°

70°

Partly Cloudy

ESE 9

42%

46°

8 PM

63°

63°

Mostly Cloudy

1%

0% Thunder
( 1% severe)

SE 7

60%

49°

11 PM

61°

62°

Mostly Cloudy

SSE 3

70%

51°

Wednesday
20 AUG 2025

2 AM

58°

59°

Mostly Cloudy

3%

0% Thunder
( 1% severe)

SSW 2

77%

51°

Low 55°

5 AM

57°

58°

Mostly Cloudy

WSW 1

80%

51°

High 74°

8 AM

62°

63°

Mostly Cloudy

6%

0% Thunder
( 0% severe)

E 1

70%

52°

Partly Cloudy

11 AM

71°

71°

Partly Cloudy

SE 6

49%

51°

2 PM

73°

73°

Partly Cloudy

18%
RAIN
<.01 in

0% Thunder
( 4% severe)

SE 10

44%

50°

5 PM

71°

71°

Partly Cloudy

SE 10

47%

50°

8 PM

65°

65°

Mostly Cloudy

SE 7

68%

54°


PORTSMOUTH, NH extended weather forecast
Thursday 21 AUG 2025	Friday 22 AUG 2025	Saturday 23 AUG 2025	Sunday 24 AUG 2025	Monday 25 AUG 2025
Low 56°	Low 56°	Low 59°	Low 62°	Low 62°
High 71°	High 78°	High 79°	High 79°	High 78°

Mostly Cloudy 11% Rain	Partly Cloudy 19% Rain	Partly Cloudy 26% Rain	Overcast 55% Rain	Overcast 53% Rain

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