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 AM EDT SEP 13, 2026
Overcast 61°F
Feels Like:	61°F
Dewpoint:	59°F
Rel. Hum.:	93%
Visibility:	10 miles
Wind:	Calm
Pressure:	30.01 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
Showers with a slight chance of thunderstorms. Patchy fog. Highs in the upper 60s. Light and variable winds. Chance of rain near 100 percent.

TONIGHT
Mostly cloudy in the evening, then partly cloudy with a chance of showers after midnight. Humid with lows in the lower 60s. Light and variable winds. Chance of rain 30 percent.

MONDAY
Partly sunny with a chance of showers in the morning, then sunny in the afternoon. Highs in the lower 70s. Northwest winds around 10 mph with gusts up to 25 mph. Chance of rain 30 percent.

MONDAY NIGHT
Clear. Lows in the upper 40s. Northwest winds around 10 mph in the evening, becoming light and variable.

TUESDAY
Sunny. Highs in the mid 60s. Light and variable winds.

TUESDAY NIGHT
Mostly clear. Lows in the lower 50s.

WEDNESDAY
Partly sunny. Highs in the mid 70s.

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

THURSDAY
Partly sunny. Highs around 70.

THURSDAY NIGHT
Partly cloudy with a 40 percent chance of showers. Lows in the upper 50s.

FRIDAY
Partly sunny. Highs in the mid 70s.

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

SATURDAY
Partly sunny with a 30 percent chance of showers. Highs in the upper 60s.

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 9/12/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Sunday
13 SEP 2026

2 AM

59°

59°

Mostly Cloudy

12%
RAIN
<.01 in

0% Thunder
( 3% severe)

S 5

93%

57°

Low 58°

5 AM

60°

60°

Mostly Cloudy

S 5

100%

60°

High 69°

8 AM

63°

64°

Mostly Cloudy

97%
RAIN
***

0% Thunder
( 22% severe)

S 5

93%

61°

Mostly Cloudy

Rain

11 AM

66°

66°

Mostly Cloudy

S 7

93%

64°

2 PM

67°

67°

Mostly Cloudy

80%
RAIN
***

0% Thunder
( 14% severe)

SE 8

93%

65°

5 PM

68°

68°

Mostly Cloudy

SSE 6

93%

66°

8 PM

66°

66°

Mostly Cloudy

1%

0% Thunder
( 1% severe)

CALM

97%

65°

11 PM

65°

65°

Mostly Cloudy

SW 1

100%

65°

Monday
14 SEP 2026

2 AM

64°

65°

Mostly Cloudy

19%
RAIN
<.01 in

0% Thunder
( 3% severe)

WSW 5

100%

64°

Low 61°

5 AM

63°

63°

Mostly Cloudy

WNW 8

100%

63°

High 73°

8 AM

62°

61°

Partly Cloudy

2%

0% Thunder
( 0% severe)

WNW 9

93%

60°

Partly Cloudy

11 AM

69°

69°

Partly Cloudy

NW 14

61%

55°

2 PM

73°

73°

Clear

0%

0% Thunder
( 0% severe)

NW 15

43%

49°

5 PM

70°

70°

Clear

NW 13

44%

47°

8 PM

61°

60°

Clear

0%

0% Thunder
( 0% severe)

NW 8

60%

47°

11 PM

56°

55°

Clear

NNW 6

74%

48°


PORTSMOUTH, NH extended weather forecast
Tuesday 15 SEP 2026	Wednesday 16 SEP 2026	Thursday 17 SEP 2026	Friday 18 SEP 2026	Saturday 19 SEP 2026
Low 48°	Low 51°	Low 57°	Low 53°	Low 50°
High 64°	High 76°	High 69°	High 67°	High 67°

Clear 1% Rain	Mostly Cloudy 9% Rain	Overcast 65% Rain	Mostly Cloudy 33% Rain	Partly Cloudy 26% Rain

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