PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
9:55 AM EDT AUG 20, 2026
Few Clouds 81°F
Feels Like:	82°F
Dewpoint:	63°F
Rel. Hum.:	54%
Visibility:	10 miles
Wind:	WNW at 7 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

TODAY
Partly sunny. Highs in the lower 80s. Light and variable winds.

TONIGHT
Mostly cloudy. A chance of showers, mainly in the evening. Lows in the upper 50s. Light and variable winds. Chance of rain 30 percent.

FRIDAY
Partly sunny. A chance of showers, mainly in the morning. Highs in the mid 70s. Northeast winds around 10 mph. Chance of rain 30 percent.

FRIDAY NIGHT
Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the upper 50s. Light and variable winds. Chance of rain 40 percent.

SATURDAY
Showers with highs in the lower 70s. Northeast winds around 10 mph. Chance of rain 80 percent.

SATURDAY NIGHT
Showers, mainly in the evening. Lows around 60. Chance of rain 80 percent.

SUNDAY
Mostly cloudy with a chance of showers. Highs in the upper 70s. Chance of rain 50 percent.

SUNDAY NIGHT
Mostly cloudy with a chance of showers in the evening, then partly cloudy after midnight. Lows in the lower 60s. Chance of rain 50 percent.

MONDAY
Partly sunny. Highs in the lower 80s.

MONDAY NIGHT
Mostly clear. Lows in the upper 50s.

TUESDAY
Mostly sunny. Highs around 80.

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

WEDNESDAY
Mostly sunny. Highs in the lower 80s.

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 8/19/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Thursday
20 AUG 2026

2 AM

66°

66°

Partly Cloudy

0%

0% Thunder
( 0% severe)

W 3

84%

61°

Low 63°

5 AM

64°

65°

Partly Cloudy

WNW 3

90%

61°

High 84°

8 AM

68°

68°

Partly Cloudy

2%

0% Thunder
( 0% severe)

NW 5

81%

62°

Mostly Cloudy

11 AM

80°

81°

Partly Cloudy

WNW 3

51%

60°

2 PM

81°

81°

Mostly Cloudy

19%
RAIN
.1–.25 in

0% Thunder
( 1% severe)

SE 7

47%

59°

5 PM

77°

79°

Mostly Cloudy

SSE 6

54%

59°

8 PM

71°

71°

Mostly Cloudy

22%
RAIN
.01–.1 in

0% Thunder
( 1% severe)

SSW 3

71%

61°

11 PM

66°

66°

Mostly Cloudy

CALM

84%

61°

Friday
21 AUG 2026

2 AM

63°

64°

Mostly Cloudy

6%

0% Thunder
( 0% severe)

NW 3

90%

60°

Low 60°

5 AM

61°

61°

Mostly Cloudy

N 5

93%

59°

High 80°

8 AM

65°

65°

Mostly Cloudy

10%
RAIN
<.01 in

0% Thunder
( 0% severe)

NE 6

81%

59°

Partly Cloudy

11 AM

75°

75°

Partly Cloudy

ENE 8

54%

57°

2 PM

77°

79°

Partly Cloudy

16%
RAIN
.1–.25 in

0% Thunder
( 0% severe)

E 9

50%

57°

5 PM

75°

75°

Partly Cloudy

E 8

52%

56°

8 PM

68°

68°

Partly Cloudy

7%

0% Thunder
( 1% severe)

E 3

73%

59°

11 PM

64°

66°

Partly Cloudy

CALM

90%

61°


PORTSMOUTH, NH extended weather forecast
Saturday 22 AUG 2026	Sunday 23 AUG 2026	Monday 24 AUG 2026	Tuesday 25 AUG 2026	Wednesday 26 AUG 2026
Low 58°	Low 60°	Low 62°	Low 54°	Low 55°
High 69°	High 71°	High 78°	High 73°	High 77°

Mostly Cloudy 71% Rain	Overcast 88% Rain	Mostly Cloudy 62% Rain	Partly Cloudy 25% Rain	Partly Cloudy 19% Rain

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