PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
12:55 PM EDT JUL 20, 2026
Broken Clouds 81°F
Feels Like:	80°F
Dewpoint:	52°F
Rel. Hum.:	37%
Visibility:	10 miles
Wind:	W at 9 mph
Pressure:	29.94 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 2025 Hurricanes	PORTSMOUTH, NH 03803 Weather Forecast	Snowfall Forecast pages Snow Depth pages

REST OF TODAY
Mostly sunny. Highs around 80. Southwest winds around 10 mph with gusts up to 20 mph.

TONIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. South winds 10 to 15 mph in the evening, becoming light and variable.

TUESDAY
Partly sunny in the morning, then mostly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.

TUESDAY NIGHT
A chance of thunderstorms. Showers. Some thunderstorms may produce heavy rainfall. Humid with lows in the mid 60s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90 percent.

WEDNESDAY
Mostly cloudy. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Humid with highs in the lower 80s. Southwest winds around 10 mph with gusts up to 20 mph. Chance of rain 70 percent.

WEDNESDAY NIGHT
Showers likely with a chance of thunderstorms in the evening. Lows in the lower 60s. Chance of rain 60 percent.

THURSDAY
Mostly sunny. Highs around 80.

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

FRIDAY
Sunny. Highs around 80.

FRIDAY NIGHT
Mostly clear. Lows around 60.

SATURDAY
Mostly sunny. Highs in the lower 80s.

SATURDAY NIGHT
Mostly clear. Lows in the lower 60s.

SUNDAY
Partly 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 AM EDT 7/20/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Monday
20 JUL 2026

2 PM

81°

80°

Clear

0%

0% Thunder
( 2% severe)

SW 7

35%

51°

High 82°

5 PM

79°

79°

Partly Cloudy

S 10

41%

53°

Partly Cloudy

8 PM

72°

72°

Partly Cloudy

0%

0% Thunder
( 1% severe)

S 8

55%

55°

11 PM

67°

67°

Partly Cloudy

SSW 7

68%

56°

Tuesday
21 JUL 2026

2 AM

64°

64°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

SSW 7

75%

56°

Low 61°

5 AM

61°

61°

Mostly Cloudy

S 6

84%

56°

High 78°

8 AM

66°

66°

Mostly Cloudy

1%

0% Thunder
( 0% severe)

S 7

78%

59°

Mostly Cloudy

Rain Likely

11 AM

75°

75°

Mostly Cloudy

SSE 13

60%

60°

2 PM

76°

78°

Mostly Cloudy

59%
RAIN
***

0% Thunder
( 19% severe)

SSE 16

58%

60°

5 PM

74°

74°

Mostly Cloudy

SSE 16

64%

61°

8 PM

69°

69°

Mostly Cloudy

92%
RAIN
***

0% Thunder
( 46% severe)

SSE 12

84%

64°

11 PM

67°

67°

Mostly Cloudy

SSE 10

100%

67°

Wednesday
22 JUL 2026

2 AM

68°

68°

Overcast

53%
RAIN
.5–1 in

0% Thunder
( 9% severe)

S 8

100%

68°

Low 64°

5 AM

67°

67°

Mostly Cloudy

S 8

100%

67°

High 85°

8 AM

70°

70°

Mostly Cloudy

25%
RAIN
.01–.1 in

0% Thunder
( 12% severe)

SSW 8

97%

69°

Mostly Cloudy

Rain Likely

11 AM

78°

80°

Mostly Cloudy

SSW 12

76%

70°

2 PM

82°

85°

Mostly Cloudy

60%
RAIN
***

0% Thunder
( 26% severe)

SSW 13

65%

69°

5 PM

81°

84°

Mostly Cloudy

SSW 13

67%

69°

8 PM

75°

75°

Mostly Cloudy

SW 9

76%

67°


PORTSMOUTH, NH extended weather forecast
Thursday 23 JUL 2026	Friday 24 JUL 2026	Saturday 25 JUL 2026	Sunday 26 JUL 2026	Monday 27 JUL 2026
Low 61°	Low 57°	Low 59°	Low 61°	Low 62°
High 78°	High 80°	High 82°	High 82°	High 82°

Partly Cloudy 31% Rain	Partly Cloudy 15% Rain	Partly Cloudy 19% Rain	Partly Cloudy 17% Rain	Partly Cloudy 28% Rain

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