PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

9:55 AM EST JAN 19, 2026
Overcast
Light Snow
Mist
28°F
Feels Like: 28°F
Dewpoint: 25°F
Rel. Hum.: 88%
Visibility: 4 miles
Wind: Calm
Pressure:
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

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Snow Depth pages
TODAY
Mostly cloudy. Snow likely, mainly this morning. Additional snow accumulation around an inch. Total snow accumulation around 5 inches. Highs in the mid 30s. Light and variable winds, becoming southwest around 10 mph with gusts up to 20 mph this afternoon. Chance of snow 70 percent.
TONIGHT
Partly cloudy in the evening, then clearing. Lows around 16. Southwest winds 10 to 15 mph with gusts up to 25 mph.
TUESDAY
Mostly sunny. Highs in the mid 20s. West winds 10 to 15 mph with gusts up to 25 mph.
TUESDAY NIGHT
Mostly clear. Lows around 10 above. West winds around 10 mph with gusts up to 25 mph.
WEDNESDAY
Mostly sunny in the morning, then becoming mostly cloudy. Highs in the lower 30s. Southwest winds around 10 mph.
WEDNESDAY NIGHT
Cloudy in the evening, then becoming partly cloudy. Lows in the lower 20s.
THURSDAY
Partly sunny. Highs around 40.
THURSDAY NIGHT
Partly cloudy. Lows around 20.
FRIDAY
Partly sunny. Highs in the mid 20s.
FRIDAY NIGHT
Partly cloudy. Lows zero to 5 above zero.
SATURDAY
Mostly sunny. Highs 10 to 15.
SATURDAY NIGHT
Mostly clear. Lows around zero.
SUNDAY
Mostly sunny. Highs around 15.

Visible Weather Satellite
PORTSMOUTH, NH 03803
Infrared Weather Satellite
PORTSMOUTH, NH 03803
NEXRAD Weather Radar
PORTSMOUTH, NH 03803

PORTSMOUTH, NH 3 hourly weather forecast

weather forecast created  7:00 PM EST  1/18/2026
Monday
19 JAN 2026
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 1 AM 30° 24° Mostly Cloudy 67%
SNOW
5–10 in
0% Thunder
( 2% severe)
N   6 88% 27°
Low 25° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 4 AM 28° 24° Overcast NNW   3 88% 25°
High 35° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 7 AM 26° 23° Mostly Cloudy 36%
SNOW
5–10 in
0% Thunder
( 3% severe)
NNW   2 87% 23°

Mostly Cloudy

Chance of Snow

PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 10 AM 29° 25° Mostly Cloudy W   3 84% 25°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 1 PM 33° 25° Mostly Cloudy 3%

0% Thunder
( 2% severe)
SW   9 68% 24°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 4 PM 33° 24° Mostly Cloudy WSW   12 57% 20°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 7 PM 29° 20° Mostly Cloudy 2%

0% Thunder
( 2% severe)
WSW   10 61% 18°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 10 PM 26° 15° Partly Cloudy SW   12 63% 16°
Tuesday
20 JAN 2026
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 1 AM 24° 13° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   12 53% 11°
Low 17° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 4 AM 21° Partly Cloudy WSW   13 52%
High 24° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 7 AM 17° Clear 1%

0% Thunder
( 0% severe)
WSW   12 51%

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 10 AM 20° Partly Cloudy W   14 44%
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 1 PM 23° 10° Partly Cloudy 1%

0% Thunder
( 0% severe)
W   15 37%
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 4 PM 22° Partly Cloudy W   15 34%
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 7 PM 18° Clear 1%

0% Thunder
( 0% severe)
W   10 42%
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 10 PM 17° Clear W   10 44%

PORTSMOUTH, NH extended weather forecast

Wednesday
21 JAN 2026
Thursday
22 JAN 2026
Friday
23 JAN 2026
Saturday
24 JAN 2026
Sunday
25 JAN 2026
Low 10° Low 25° Low 22° Low 5° Low 0°
High 27° High 41° High 31° High 10° High 15°
PORTSMOUTH, NH 03803 weather forecast Day 3 PORTSMOUTH, NH 03803 weather forecast Day 4 PORTSMOUTH, NH 03803 weather forecast Day 5 PORTSMOUTH, NH 03803 weather forecast Day 6 PORTSMOUTH, NH 03803 weather forecast Day 7
Partly Cloudy
7% Snow
Mostly Cloudy
52% Snow
Partly Cloudy
19% Snow
Partly Cloudy
25% Snow
Partly Cloudy
16% Snow
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