PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
6:55 AM EDT SEP 26, 2026
Overcast 63°F
Feels Like:	61°F
Dewpoint:	48°F
Rel. Hum.:	58%
Visibility:	10 miles
Wind:	NNE at 14 mph
Pressure:	29.98 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
Cloudy. A chance of rain this morning, then rain with a slight chance of thunderstorms this afternoon. Highs in the lower 60s. Northeast winds 15 to 20 mph with gusts up to 40 mph. Chance of rain 90 percent.

TONIGHT
Rain. Lows in the lower 50s. Northeast winds 15 to 25 mph with gusts up to 45 mph. Chance of rain 90 percent.

SUNDAY
Rain likely in the morning, then rain with a slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Northeast winds around 20 mph with gusts up to 45 mph. Chance of rain 90 percent.

SUNDAY NIGHT
Rain. Lows in the lower 50s. Northeast winds 15 to 20 mph. Gusts up to 40 mph, decreasing to 30 mph after midnight. Chance of rain near 100 percent.

MONDAY
Rain. Highs in the upper 50s. Northeast winds 10 to 15 mph with gusts up to 30 mph. Chance of rain near 100 percent.

MONDAY NIGHT
Rain. Lows in the lower 50s. Chance of rain 90 percent.

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

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

WEDNESDAY
Partly sunny. Highs in the upper 60s.

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

THURSDAY
Partly sunny. Highs in the lower 70s.

THURSDAY NIGHT
Partly cloudy. Lows in the upper 50s.

FRIDAY
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 PM EDT 9/25/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Saturday
26 SEP 2026

2 AM

56°

53°

Mostly Cloudy

14%
RAIN
<.01 in

0% Thunder
( 0% severe)

NE 12

80%

50°

Low 55°

5 AM

56°

52°

Mostly Cloudy

NE 15

83%

51°

High 64°

8 AM

56°

52°

Mostly Cloudy

48%
RAIN
***

0% Thunder
( 6% severe)

NNE 15

80%

50°

Mostly Cloudy

Rain Likely

Breezy

11 AM

60°

57°

Mostly Cloudy

NE 18

69%

50°

2 PM

60°

57°

Mostly Cloudy

89%
RAIN
***

0% Thunder
( 16% severe)

NE 21

69%

50°

5 PM

58°

54°

Mostly Cloudy

NE 21

75%

50°

8 PM

55°

50°

Mostly Cloudy

89%
RAIN
***

0% Thunder
( 11% severe)

NE 20

86%

51°

11 PM

54°

49°

Overcast

NE 20

96%

53°

Sunday
27 SEP 2026

2 AM

54°

49°

Overcast

85%
RAIN
***

0% Thunder
( 10% severe)

NE 20

100%

54°

Low 53°

5 AM

54°

49°

Overcast

NE 22

100%

54°

High 61°

8 AM

54°

49°

Mostly Cloudy

89%
RAIN
***

0% Thunder
( 9% severe)

NE 21

100%

54°

Mostly Cloudy

Rain

Windy

11 AM

58°

54°

Mostly Cloudy

NE 23

90%

55°

2 PM

58°

54°

Mostly Cloudy

93%
RAIN
***

0% Thunder
( 12% severe)

NE 23

87%

54°

5 PM

57°

52°

Mostly Cloudy

NE 22

86%

53°

8 PM

55°

50°

Mostly Cloudy

87%
RAIN
***

0% Thunder
( 11% severe)

NE 18

96%

54°

11 PM

55°

51°

Mostly Cloudy

NE 17

100%

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 54°	Low 52°	Low 52°	Low 55°	Low 54°
High 57°	High 63°	High 70°	High 74°	High 73°

Overcast 98% Rain	Overcast 89% Rain	Overcast 39% Rain	Partly Cloudy 42% Rain	Mostly Cloudy 31% Rain

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