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 SEP 25, 2026
Broken Clouds 68°F
Feels Like:	68°F
Dewpoint:	46°F
Rel. Hum.:	45%
Visibility:	10 miles
Wind:	NE at 17 mph, gusts to 26
Pressure:	30.20 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 this morning, then becoming mostly cloudy. Highs in the mid 60s. Northeast winds 10 to 15 mph with gusts up to 30 mph.

TONIGHT
Cloudy. A slight chance of rain in the evening, then a chance of rain after midnight. Lows in the lower 50s. Northeast winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 50 percent.

SATURDAY
Cloudy. A chance of rain in the morning, then rain in the afternoon. Highs in the lower 60s. Northeast winds 15 to 20 mph with gusts up to 40 mph. Chance of rain 80 percent.

SATURDAY NIGHT
Rain. Lows in the lower 50s. Northeast winds 15 to 20 mph with gusts up to 40 mph. Chance of rain 90 percent.

SUNDAY
Rain. Highs around 60. Northeast winds 20 to 25 mph with gusts up to 45 mph. Chance of rain 90 percent.

SUNDAY NIGHT
Rain. Lows in the lower 50s. Chance of rain near 100 percent.

MONDAY
Rain. Highs around 60. Chance of rain 90 percent.

MONDAY NIGHT
Rain in the evening, then showers likely after midnight. Lows in the lower 50s. Chance of rain 80 percent.

TUESDAY
Mostly cloudy. A chance of showers in the morning. Highs in the mid 60s. Chance of rain 40 percent.

TUESDAY NIGHT
Partly cloudy. Lows in the lower 50s.

WEDNESDAY
Partly sunny. Highs in the upper 60s.

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

THURSDAY
Partly sunny. Highs in the lower 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 9/25/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Friday
25 SEP 2026

2 PM

68°

68°

Mostly Cloudy

6%

0% Thunder
( 0% severe)

NE 16

49%

48°

High 69°

5 PM

66°

66°

Mostly Cloudy

NE 14

50%

47°

Mostly Cloudy

Chance of Rain

8 PM

62°

61°

Mostly Cloudy

28%
RAIN
<.01 in

0% Thunder
( 1% severe)

ENE 12

60%

48°

11 PM

60°

58°

Mostly Cloudy

NE 12

69%

50°

Saturday
26 SEP 2026

2 AM

58°

56°

Mostly Cloudy

12%
RAIN
<.01 in

0% Thunder
( 1% severe)

NE 12

77%

51°

Low 55°

5 AM

57°

54°

Mostly Cloudy

NE 14

80%

51°

High 65°

8 AM

57°

54°

Mostly Cloudy

34%
RAIN
.5–1 in

0% Thunder
( 6% severe)

NNE 15

77%

50°

Mostly Cloudy

Rain Likely

Breezy

11 AM

61°

58°

Mostly Cloudy

NE 17

67%

50°

2 PM

62°

59°

Overcast

62%
RAIN
***

0% Thunder
( 17% severe)

NE 21

65%

50°

5 PM

60°

57°

Mostly Cloudy

NE 21

72%

51°

8 PM

58°

54°

Mostly Cloudy

77%
RAIN
***

0% Thunder
( 8% severe)

NE 18

80%

52°

11 PM

57°

53°

Mostly Cloudy

NE 18

86%

53°

Sunday
27 SEP 2026

2 AM

56°

52°

Overcast

79%
RAIN
***

0% Thunder
( 7% severe)

NE 20

93%

54°

Low 53°

5 AM

55°

50°

Overcast

NE 21

96%

54°

High 63°

8 AM

55°

50°

Mostly Cloudy

77%
RAIN
***

0% Thunder
( 8% severe)

NE 21

96%

54°

Mostly Cloudy

Rain Likely

Windy

11 AM

59°

55°

Mostly Cloudy

NE 24

83%

54°

2 PM

60°

56°

Mostly Cloudy

86%
RAIN
***

0% Thunder
( 11% severe)

NE 24

84%

55°

5 PM

59°

55°

Mostly Cloudy

NE 23

87%

55°

8 PM

58°

54°

Mostly Cloudy

NE 20

90%

55°


PORTSMOUTH, NH extended weather forecast
Monday 28 SEP 2026	Tuesday 29 SEP 2026	Wednesday 30 SEP 2026	Thursday 1 OCT 2026	Friday 2 OCT 2026
Low 52°	Low 51°	Low 52°	Low 55°	Low 57°
High 57°	High 63°	High 72°	High 73°	High 77°

Overcast 89% Rain	Overcast 80% Rain	Mostly Cloudy 42% Rain	Mostly Cloudy 36% Rain	Partly Cloudy 39% Rain

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