PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

4:55 AM EDT OCT 29, 2025
Overcast
45°F
Feels Like: 40°F
Dewpoint: 36°F
Rel. Hum.: 71%
Visibility: 10 miles
Wind: N at 10 mph
Pressure: 30.20 inches
Last 72 hours

Local Area Snow Depth

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PORTSMOUTH, NH 03803
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly cloudy with a 20 percent chance of showers. Highs in the lower 50s. North winds 10 to 15 mph with gusts up to 25 mph.
TONIGHT
Mostly cloudy with a 20 percent chance of showers. Lows around 40. North winds around 10 mph in the evening, becoming light and variable.
THURSDAY
Cloudy. A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 50s. Northeast winds 10 to 15 mph. Gusts up to 30 mph in the afternoon. Chance of rain 70 percent.
THURSDAY NIGHT
Rain. Lows in the upper 40s. East winds 15 to 20 mph with gusts up to 35 mph. Chance of rain near 100 percent.
FRIDAY
Mostly cloudy with rain in the morning, then partly sunny with a chance of rain in the afternoon. Highs in the lower 60s. Southeast winds 10 to 15 mph, becoming southwest in the afternoon. Gusts up to 30 mph. Chance of rain 90 percent.
FRIDAY NIGHT
Partly cloudy. Lows in the lower 40s.
SATURDAY
Partly sunny. Highs in the mid 50s.
SATURDAY NIGHT
Mostly clear. Lows in the mid 30s.
SUNDAY
Mostly sunny. Highs in the lower 50s.
SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 30s.
MONDAY
Partly sunny. A chance of rain showers in the afternoon. Highs in the mid 50s. Chance of rain 40 percent.
MONDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A 50 percent chance of showers. Lows in the upper 30s.
TUESDAY
Partly sunny with a 50 percent chance of showers. Highs in the mid 50s.

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 10/28/2025
Wednesday
29 OCT 2025
PORTSMOUTH, NH 03803 weather forecast Day 1, 0 hours 1 AM 45° 40° Mostly Cloudy 7%

0% Thunder
( 2% severe)
NNE   9 76% 38°
Low 42° PORTSMOUTH, NH 03803 weather forecast Day 1, 3 hours 4 AM 44° 38° Mostly Cloudy NNE   12 76% 37°
High 55° PORTSMOUTH, NH 03803 weather forecast Day 1, 6 hours 7 AM 43° 37° Mostly Cloudy 5%

0% Thunder
( 1% severe)
NNE   12 82% 38°

Mostly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 9 hours 10 AM 50° 45° Mostly Cloudy NNE   13 66% 39°
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 1 PM 52° 48° Mostly Cloudy 5%

0% Thunder
( 0% severe)
NE   13 61% 39°
PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 4 PM 51° 47° Mostly Cloudy NE   12 66% 40°
PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 7 PM 48° 45° Mostly Cloudy 9%

0% Thunder
( 0% severe)
NE   7 77% 41°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 10 PM 46° 44° Mostly Cloudy NNE   5 83% 41°
Thursday
30 OCT 2025
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 1 AM 44° 41° Mostly Cloudy 10%
RAIN
<.01 in
0% Thunder
( 0% severe)
N   5 86% 40°
Low 39° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 4 AM 43° 39° Mostly Cloudy NNE   6 86% 39°
High 58° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 7 AM 43° 39° Mostly Cloudy 24%
RAIN
<.01 in
0% Thunder
( 1% severe)
NNE   7 93% 41°

Mostly Cloudy

Rain Likely

PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 10 AM 52° 48° Mostly Cloudy NE   10 74% 44°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 1 PM 54° 50° Mostly Cloudy 66%
RAIN
1–2 in
0% Thunder
( 1% severe)
ENE   13 74% 46°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 4 PM 54° 50° Mostly Cloudy ENE   15 80% 48°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 7 PM 53° 49° Overcast 95%
RAIN
***
0% Thunder
( 4% severe)
ENE   12 93% 51°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 10 PM 54° 51° Overcast ENE   12 96% 53°

PORTSMOUTH, NH extended weather forecast

Friday
31 OCT 2025
Saturday
1 NOV 2025
Sunday
2 NOV 2025
Monday
3 NOV 2025
Tuesday
4 NOV 2025
Low 49° Low 42° Low 33° Low 33° Low 37°
High 56° High 54° High 51° High 51° High 48°
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
Overcast
95% Rain
Partly Cloudy
30% Rain
Clear
8% Rain
Partly Cloudy
15% Rain
Overcast
58% Rain
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