PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

5:55 PM EDT JUN 23, 2025
Broken Clouds
84°F
Feels Like: 88°F
Dewpoint: 70°F
Rel. Hum.: 63%
Visibility: 7 miles
Wind: SE at 12 mph
Pressure: 29.96 inches
Last 72 hours

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PORTSMOUTH, NH 03803
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Partly cloudy this evening, then clearing. Lows in the lower 70s. South winds around 10 mph this evening, becoming light and variable.
TUESDAY
Mostly sunny. Hot with highs in the upper 90s. Light and variable winds, becoming west around 10 mph in the afternoon. Heat index values up to 105.
TUESDAY NIGHT
Mostly clear. Humid with lows in the lower 70s. Light and variable winds. Heat index values up to 100 early in the evening.
WEDNESDAY
Mostly sunny. Scattered showers in the afternoon. Warm with highs in the upper 80s. North winds around 10 mph in the morning, becoming light and variable. Chance of rain 30 percent. Heat index values in the lower 90s.
WEDNESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s. Light and variable winds, becoming northeast around 10 mph after midnight.
THURSDAY
Mostly cloudy with scattered showers. Highs in the lower 70s. Chance of rain 40 percent.
THURSDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Scattered showers. Lows in the upper 50s. Chance of rain 40 percent.
FRIDAY
Mostly cloudy in the morning, then becoming partly sunny. Scattered showers. Highs in the upper 60s. Chance of rain 30 percent.
FRIDAY NIGHT
Mostly cloudy with scattered showers. Lows in the upper 50s. Chance of rain 50 percent.
SATURDAY
Mostly cloudy with scattered showers. Highs around 70. Chance of rain 50 percent.
SATURDAY NIGHT
Mostly cloudy with scattered showers. Lows in the lower 60s. Chance of rain 50 percent.
SUNDAY
Mostly cloudy with scattered showers in the morning, then partly sunny in the afternoon. Highs in the upper 70s. Chance of rain 30 percent.
SUNDAY NIGHT
Partly cloudy. Lows in the mid 60s.

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  8:00 AM EDT  6/23/2025
Monday
23 JUN 2025
PORTSMOUTH, NH 03803 weather forecast Day 1, 12 hours 2 PM 85° 88° Partly Cloudy 1%

0% Thunder
( 10% severe)
SE   8 57% 68°
High 86° PORTSMOUTH, NH 03803 weather forecast Day 1, 15 hours 5 PM 83° 86° Partly Cloudy SSE   10 59% 67°
Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 1, 18 hours 8 PM 78° 80° Partly Cloudy 0%

0% Thunder
( 9% severe)
S   7 69% 67°
PORTSMOUTH, NH 03803 weather forecast Day 1, 21 hours 11 PM 75° 75° Partly Cloudy SSW   6 79% 68°
Tuesday
24 JUN 2025
PORTSMOUTH, NH 03803 weather forecast Day 2, 0 hours 2 AM 74° 74° Partly Cloudy 0%

0% Thunder
( 1% severe)
WSW   6 84% 69°
Low 71° PORTSMOUTH, NH 03803 weather forecast Day 2, 3 hours 5 AM 73° 73° Partly Cloudy WSW   6 87% 69°
High 99° PORTSMOUTH, NH 03803 weather forecast Day 2, 6 hours 8 AM 81° 85° Clear 0%

0% Thunder
( 1% severe)
W   6 72% 71°

Clear



PORTSMOUTH, NH 03803 weather forecast Day 2, 9 hours 11 AM 92° 98° Clear W   8 49% 70°
PORTSMOUTH, NH 03803 weather forecast Day 2, 12 hours 2 PM 97° 102° Clear 2%

0% Thunder
( 10% severe)
W   10 39% 68°
PORTSMOUTH, NH 03803 weather forecast Day 2, 15 hours 5 PM 97° 102° Clear W   9 39% 68°
PORTSMOUTH, NH 03803 weather forecast Day 2, 18 hours 8 PM 89° 94° Partly Cloudy 2%

0% Thunder
( 11% severe)
W   6 54% 70°
PORTSMOUTH, NH 03803 weather forecast Day 2, 21 hours 11 PM 83° 87° Partly Cloudy WNW   5 65% 70°
Wednesday
25 JUN 2025
PORTSMOUTH, NH 03803 weather forecast Day 3, 0 hours 2 AM 78° 80° Partly Cloudy 5%

0% Thunder
( 1% severe)
WNW   5 76% 70°
Low 75° PORTSMOUTH, NH 03803 weather forecast Day 3, 3 hours 5 AM 76° 77° Partly Cloudy NW   3 79% 69°
High 88° PORTSMOUTH, NH 03803 weather forecast Day 3, 6 hours 8 AM 79° 82° Partly Cloudy 10%
RAIN
<.01 in
0% Thunder
( 6% severe)
NNW   5 72% 69°

Partly Cloudy



PORTSMOUTH, NH 03803 weather forecast Day 3, 9 hours 11 AM 84° 87° Partly Cloudy NNE   5 57% 67°
PORTSMOUTH, NH 03803 weather forecast Day 3, 15 hours 2 PM 85° 86° Partly Cloudy 13%
RAIN
<.01 in
0% Thunder
( 11% severe)
E   7 50% 64°
PORTSMOUTH, NH 03803 weather forecast Day 3, 18 hours 5 PM 82° 83° Partly Cloudy SSE   6 51% 62°
PORTSMOUTH, NH 03803 weather forecast Day 3, 21 hours 8 PM 76° 78° Partly Cloudy     SE   3 64% 63°

PORTSMOUTH, NH extended weather forecast

Thursday
26 JUN 2025
Friday
27 JUN 2025
Saturday
28 JUN 2025
Sunday
29 JUN 2025
Monday
30 JUN 2025
Low 64° Low 57° Low 60° Low 61° Low 67°
High 75° High 73° High 74° High 80° High 86°
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 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Overcast
14% Rain
Overcast
31% Rain
Overcast
65% Rain
Overcast
33% Rain
Mostly Cloudy
35% Rain
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