PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
3:55 AM EDT SEP 1, 2026
Overcast 61°F
Feels Like:	61°F
Dewpoint:	57°F
Rel. Hum.:	87%
Visibility:	10 miles
Wind:	Calm
Pressure:	30.03 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
Rain. Highs around 70. Light and variable winds. Chance of rain 80 percent.

TONIGHT
Mostly cloudy. A chance of showers, mainly in the evening. Lows in the upper 50s. Light and variable winds. Chance of rain 40 percent.

WEDNESDAY
Mostly cloudy. Highs in the lower 70s. Light and variable winds, becoming east around 10 mph in the afternoon.

WEDNESDAY NIGHT
Showers. Lows in the lower 60s. Light and variable winds. Chance of rain 90 percent.

THURSDAY
Showers with highs in the upper 70s. South winds around 10 mph in the morning, becoming light and variable. Chance of rain 90 percent.

THURSDAY NIGHT
Showers likely in the evening. Lows in the lower 60s. Chance of rain 60 percent.

FRIDAY
Mostly sunny. Highs around 80.

FRIDAY NIGHT
Partly cloudy. Lows in the upper 50s.

SATURDAY
Partly sunny. Highs in the lower 70s.

SATURDAY NIGHT
Partly cloudy. Lows in the mid 50s.

SUNDAY
Mostly sunny. Highs in the lower 70s.

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

LABOR DAY
Mostly sunny. Highs in the mid 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 PM EDT 8/31/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Tuesday
1 SEP 2026

2 AM

63°

64°

Partly Cloudy

57%
RAIN
.25–.5 in

0% Thunder
( 3% severe)

CALM

93%

61°

Low 61°

5 AM

62°

63°

Mostly Cloudy

CALM

97%

61°

High 72°

8 AM

63°

64°

Mostly Cloudy

74%
RAIN
***

0% Thunder
( 6% severe)

NE 1

93%

61°

Mostly Cloudy

Rain Likely

11 AM

67°

67°

Mostly Cloudy

E 7

84%

62°

2 PM

68°

68°

Mostly Cloudy

48%
RAIN
***

0% Thunder
( 3% severe)

ESE 9

78%

61°

5 PM

67°

67°

Mostly Cloudy

SE 9

75%

59°

8 PM

66°

66°

Mostly Cloudy

23%
RAIN
.01–.1 in

0% Thunder
( 5% severe)

SE 6

81%

60°

11 PM

63°

64°

Mostly Cloudy

E 3

93%

61°

Wednesday
2 SEP 2026

2 AM

62°

63°

Mostly Cloudy

6%

0% Thunder
( 2% severe)

ENE 3

93%

60°

Low 60°

5 AM

61°

61°

Overcast

ENE 5

97%

60°

High 74°

8 AM

63°

63°

Mostly Cloudy

4%

0% Thunder
( 2% severe)

ENE 6

87%

59°

Mostly Cloudy

11 AM

69°

69°

Mostly Cloudy

E 9

68%

58°

2 PM

70°

70°

Mostly Cloudy

10%
RAIN
<.01 in

0% Thunder
( 0% severe)

E 9

66%

58°

5 PM

69°

69°

Mostly Cloudy

ESE 9

68%

58°

8 PM

67°

67°

Mostly Cloudy

52%
RAIN
>2 in

0% Thunder
( 5% severe)

ESE 7

81%

61°

11 PM

65°

65°

Mostly Cloudy

SE 6

90%

62°


PORTSMOUTH, NH extended weather forecast
Thursday 3 SEP 2026	Friday 4 SEP 2026	Saturday 5 SEP 2026	Sunday 6 SEP 2026	Monday 7 SEP 2026
Low 61°	Low 61°	Low 60°	Low 54°	Low 54°
High 72°	High 78°	High 73°	High 70°	High 77°

Overcast 82% Rain	Overcast 27% Rain	Mostly Cloudy 49% Rain	Mostly Cloudy 26% Rain	Partly Cloudy 18% Rain

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