PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
2:55 AM EDT AUG 8, 2026
Overcast 77°F
Feels Like:	78°F
Dewpoint:	72°F
Rel. Hum.:	85%
Visibility:	10 miles
Wind:	SW at 5 mph
Pressure:	29.95 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

REST OF TONIGHT
Mostly cloudy with isolated showers and thunderstorms. Patchy fog. Lows in the lower 70s. Light and variable winds. Chance of rain 20 percent.

SATURDAY
Partly sunny with isolated showers. Isolated thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the afternoon. Warm with highs in the mid 80s. Light and variable winds. Chance of rain 20 percent. Heat index values in the mid 90s.

SATURDAY NIGHT
Partly cloudy with isolated showers and thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may produce heavy rainfall in the evening. Humid with lows in the upper 60s. Light and variable winds. Chance of rain 20 percent.

SUNDAY
Mostly sunny. Warm with highs in the upper 80s. Light and variable winds, becoming west around 10 mph in the afternoon. Heat index values in the mid 90s.

SUNDAY NIGHT
Mostly clear. Lows in the mid 60s. Light and variable winds.

MONDAY
Mostly sunny. Warm with highs in the mid 80s.

MONDAY NIGHT
Partly cloudy. Lows in the upper 60s.

TUESDAY
Mostly sunny. Warm with highs in the upper 80s.

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

WEDNESDAY
Partly sunny. Highs in the lower 80s.

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

THURSDAY
Partly sunny. A chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 30 percent.

THURSDAY NIGHT
Partly cloudy with a chance of showers in the evening, then mostly clear after midnight. Lows 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 PM EDT 8/ 7/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Saturday
8 AUG 2026

2 AM

72°

72°

Mostly Cloudy

49%
RAIN
***

0% Thunder
( 14% severe)

CALM

93%

70°

Low 70°

5 AM

71°

71°

Mostly Cloudy

CALM

97%

70°

High 87°

8 AM

73°

73°

Mostly Cloudy

14%
RAIN
.1–.25 in

0% Thunder
( 8% severe)

CALM

90%

70°

Mostly Cloudy

Chance of Rain

11 AM

82°

86°

Mostly Cloudy

WSW 3

69%

71°

2 PM

84°

90°

Partly Cloudy

41%
RAIN
<.01 in

0% Thunder
( 26% severe)

WSW 7

67%

72°

5 PM

82°

87°

Partly Cloudy

W 6

74%

73°

8 PM

77°

78°

Mostly Cloudy

7%

0% Thunder
( 15% severe)

W 2

85%

72°

11 PM

72°

72°

Partly Cloudy

WSW 2

97%

71°

Sunday
9 AUG 2026

2 AM

71°

71°

Partly Cloudy

2%

0% Thunder
( 1% severe)

WSW 3

97%

70°

Low 70°

5 AM

70°

70°

Partly Cloudy

WSW 5

97%

69°

High 90°

8 AM

74°

74°

Clear

1%

0% Thunder
( 4% severe)

W 6

87%

70°

Clear

11 AM

84°

88°

Clear

W 8

61%

69°

2 PM

89°

92°

Clear

6%

0% Thunder
( 18% severe)

SW 9

48%

67°

5 PM

88°

89°

Partly Cloudy

W 10

45%

64°

8 PM

79°

81°

Clear

0%

0% Thunder
( 7% severe)

W 7

58%

63°

11 PM

73°

73°

Clear

WNW 6

68%

62°


PORTSMOUTH, NH extended weather forecast
Monday 10 AUG 2026	Tuesday 11 AUG 2026	Wednesday 12 AUG 2026	Thursday 13 AUG 2026	Friday 14 AUG 2026
Low 65°	Low 66°	Low 69°	Low 61°	Low 62°
High 84°	High 86°	High 78°	High 83°	High 78°

Mostly Cloudy 17% Rain	Partly Cloudy 32% Rain	Overcast 71% Rain	Partly Cloudy 30% Rain	Overcast 50% Rain

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