PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
1:55 PM EDT SEP 28, 2026
Overcast Light Rain Mist 57°F
Feels Like:	55°F
Dewpoint:	55°F
Rel. Hum.:	93%
Visibility:	1 1/2 miles
Wind:	NE at 10 mph
Pressure:	29.89 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
Rain. Patchy fog. Highs in the upper 50s. Northeast winds 15 to 20 mph with gusts up to 35 mph. Chance of rain 90 percent.

TONIGHT
Rain. Patchy fog. Lows in the upper 40s. North winds 10 to 15 mph. Chance of rain 90 percent.

TUESDAY
Mostly cloudy. A slight chance of rain in the morning. Patchy fog in the morning. Highs in the mid 60s. North winds around 10 mph in the morning, becoming light and variable. Chance of rain 20 percent.

TUESDAY NIGHT
Mostly cloudy. Lows in the lower 50s. Light and variable winds.

WEDNESDAY
Partly sunny. Highs in the upper 60s. Light and variable winds.

WEDNESDAY NIGHT
Partly cloudy. Lows in the lower 50s.

THURSDAY
Partly sunny. Highs in the mid 70s.

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

FRIDAY
Partly sunny. Highs in the mid 70s.

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

SATURDAY
Partly sunny. Highs in the mid 60s.

SATURDAY NIGHT
Partly cloudy. Lows in the mid 40s.

SUNDAY
Partly sunny. A chance of showers in the afternoon. Highs in the lower 60s. Chance of rain 30 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 9/28/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Monday
28 SEP 2026

2 PM

59°

56°

Mostly Cloudy

95%
RAIN
***

0% Thunder
( 17% severe)

NE 17

83%

54°

High 60°

5 PM

58°

55°

Mostly Cloudy

NE 15

83%

53°

Mostly Cloudy

Rain

8 PM

54°

51°

Mostly Cloudy

89%
RAIN
***

0% Thunder
( 7% severe)

NNE 12

100%

54°

11 PM

54°

51°

Mostly Cloudy

NNE 10

100%

54°

Tuesday
29 SEP 2026

2 AM

53°

50°

Mostly Cloudy

44%
RAIN
.25–.5 in

0% Thunder
( 4% severe)

N 8

100%

53°

Low 51°

5 AM

53°

50°

Mostly Cloudy

N 8

100%

53°

High 69°

8 AM

54°

52°

Mostly Cloudy

3%

0% Thunder
( 0% severe)

N 7

100%

54°

Mostly Cloudy

11 AM

63°

63°

Mostly Cloudy

N 8

78%

56°

2 PM

67°

67°

Mostly Cloudy

5%

0% Thunder
( 0% severe)

N 7

68%

56°

5 PM

66°

66°

Mostly Cloudy

N 3

73%

57°

8 PM

60°

61°

Mostly Cloudy

1%

0% Thunder
( 0% severe)

CALM

90%

57°

11 PM

57°

58°

Mostly Cloudy

CALM

100%

57°

Wednesday
30 SEP 2026

2 AM

55°

55°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

CALM

100%

55°

Low 54°

5 AM

54°

54°

Mostly Cloudy

CALM

100%

54°

High 72°

8 AM

55°

55°

Mostly Cloudy

0%

0% Thunder
( 1% severe)

CALM

100%

55°

Mostly Cloudy

11 AM

67°

67°

Mostly Cloudy

CALM

68%

56°

2 PM

70°

70°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

S 3

63%

57°

5 PM

67°

67°

Mostly Cloudy

S 7

70%

57°

8 PM

59°

59°

Mostly Cloudy

S 5

93%

57°


PORTSMOUTH, NH extended weather forecast
Thursday 1 OCT 2026	Friday 2 OCT 2026	Saturday 3 OCT 2026	Sunday 4 OCT 2026	Monday 5 OCT 2026
Low 56°	Low 59°	Low 49°	Low 45°	Low 48°
High 79°	High 78°	High 63°	High 63°	High 65°

Partly Cloudy 13% Rain	Mostly Cloudy 33% Rain	Partly Cloudy 25% Rain	Overcast 51% Rain	Mostly Cloudy 69% Rain

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