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 AUG 27, 2026
Broken Clouds 79°F
Feels Like:	81°F
Dewpoint:	66°F
Rel. Hum.:	64%
Visibility:	10 miles
Wind:	SE at 16 mph
Pressure:	30.01 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
Partly sunny. A slight chance of showers and thunderstorms this afternoon. Highs in the lower 80s. Light and variable winds, becoming south around 10 mph with gusts up to 20 mph this afternoon. Chance of rain 20 percent.

TONIGHT
Partly cloudy with a slight chance of showers and thunderstorms. Humid with lows in the upper 60s. South winds around 10 mph with gusts up to 20 mph in the evening, becoming light and variable. Chance of rain 20 percent.

FRIDAY
Mostly cloudy in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 80s. Light and variable winds. Chance of rain 50 percent.

FRIDAY NIGHT
Partly cloudy. A chance of showers in the evening. Humid with lows in the lower 60s. Light and variable winds. Chance of rain 50 percent.

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

SATURDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows around 60.

SUNDAY
Partly sunny. Highs in the lower 80s.

SUNDAY NIGHT
Partly cloudy. Lows in the mid 60s.

MONDAY
Partly sunny. Highs in the upper 70s.

MONDAY NIGHT
Partly cloudy. Lows around 60.

TUESDAY
Partly sunny. A chance of showers in the afternoon. Highs in the lower 70s. Chance of rain 30 percent.

TUESDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. Lows in the lower 60s. Chance of rain 50 percent.

WEDNESDAY
Mostly cloudy in the morning, then becoming partly sunny. A 40 percent chance of showers. 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 AM EDT 8/27/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Thursday
27 AUG 2026

2 PM

80°

82°

Partly Cloudy

18%
RAIN
<.01 in

0% Thunder
( 15% severe)

SSE 13

62%

66°

High 81°

5 PM

80°

82°

Mostly Cloudy

SSE 13

60%

65°

Mostly Cloudy

Chance of Rain

8 PM

74°

74°

Partly Cloudy

25%
RAIN
<.01 in

0% Thunder
( 19% severe)

S 10

69%

63°

11 PM

70°

70°

Mostly Cloudy

S 8

87%

66°

Friday
28 AUG 2026

2 AM

70°

70°

Mostly Cloudy

11%
RAIN
<.01 in

0% Thunder
( 8% severe)

S 7

93%

68°

Low 68°

5 AM

69°

69°

Mostly Cloudy

SSW 6

97%

68°

High 83°

8 AM

70°

70°

Mostly Cloudy

19%
RAIN
<.01 in

0% Thunder
( 15% severe)

SW 5

97%

69°

Mostly Cloudy

Chance of Rain

11 AM

78°

80°

Mostly Cloudy

WSW 6

74%

69°

2 PM

80°

83°

Partly Cloudy

43%
RAIN
***

0% Thunder
( 22% severe)

SSE 7

69%

69°

5 PM

78°

80°

Partly Cloudy

SSE 7

74%

69°

8 PM

72°

72°

Mostly Cloudy

3%

0% Thunder
( 3% severe)

S 3

87%

68°

11 PM

68°

68°

Partly Cloudy

NW 5

93%

66°

Saturday
29 AUG 2026

2 AM

66°

66°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

NNW 6

90%

63°

Low 61°

5 AM

63°

64°

Partly Cloudy

NNW 5

93%

61°

High 80°

8 AM

64°

65°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

NNW 5

84%

59°

Decreasing Clouds

11 AM

75°

75°

Partly Cloudy

N 2

54%

57°

2 PM

78°

79°

Clear

0%

0% Thunder
( 0% severe)

SSE 7

43%

54°

5 PM

76°

78°

Clear

S 8

46%

54°

8 PM

68°

68°

Clear

S 6

68%

57°


PORTSMOUTH, NH extended weather forecast
Sunday 30 AUG 2026	Monday 31 AUG 2026	Tuesday 1 SEP 2026	Wednesday 2 SEP 2026	Thursday 3 SEP 2026
Low 56°	Low 65°	Low 59°	Low 56°	Low 60°
High 85°	High 75°	High 71°	High 73°	High 76°

Partly Cloudy 7% Rain	Overcast 39% Rain	Mostly Cloudy 58% Rain	Mostly Cloudy 38% Rain	Overcast 55% Rain

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