PORTSMOUTH, NH 03801 Weather Forecast & Current Conditions

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PORTSMOUTH, NH
Current Weather

3:55 AM EDT JUN 22, 2025
Broken Clouds
68°F
Feels Like: 68°F
Dewpoint: 61°F
Rel. Hum.: 78%
Visibility: 10 miles
Wind: Calm
Pressure: 29.98 inches
Last 72 hours

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PORTSMOUTH, NH 03801
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly cloudy with showers likely with a chance of thunderstorms this morning, then partly sunny this afternoon. Some thunderstorms may produce gusty winds this morning. Hot with highs around 90. Southwest winds 10 to 15 mph, becoming west this afternoon. Gusts up to 30 mph. Chance of rain 60 percent. Heat index values in the upper 90s this afternoon.
TONIGHT
Mostly clear. Humid with lows in the upper 60s. Northwest winds around 10 mph with gusts up to 20 mph in the evening, becoming light and variable. Heat index values in the mid 90s early in the evening.
MONDAY
Mostly sunny. Humid with highs in the mid 80s. Light and variable winds, becoming southeast around 10 mph with gusts up to 20 mph in the afternoon.
MONDAY NIGHT
Mostly clear. Humid with lows in the upper 60s. South winds around 10 mph in the evening, becoming light and variable.
TUESDAY
Mostly sunny. Hot with highs in the mid 90s. Light and variable winds, becoming west around 10 mph in the afternoon. Heat index values up to 104.
TUESDAY NIGHT
Mostly clear. Lows in the lower 70s.
WEDNESDAY
Mostly sunny. Highs in the mid 80s.
WEDNESDAY NIGHT
Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the lower 60s. Chance of rain 30 percent.
THURSDAY
Mostly cloudy in the morning, then becoming partly sunny. A 40 percent chance of showers. Highs around 70.
THURSDAY NIGHT
Mostly cloudy with a 50 percent chance of showers. Lows in the upper 50s.
FRIDAY
Mostly cloudy with a 50 percent chance of showers. Highs around 70.
FRIDAY NIGHT
Mostly cloudy with a chance of showers. Lows in the upper 50s. Chance of rain 50 percent.
SATURDAY
Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. Highs around 70. Chance of rain 50 percent.

Visible Weather Satellite
PORTSMOUTH, NH 03801
Infrared Weather Satellite
PORTSMOUTH, NH 03801
NEXRAD Weather Radar
PORTSMOUTH, NH 03801

PORTSMOUTH, NH 3 hourly weather forecast

weather forecast created  8:00 PM EDT  6/21/2025
Sunday
22 JUN 2025
PORTSMOUTH, NH 03801 weather forecast Day 1, 0 hours 2 AM 67° 67° Mostly Cloudy 38%
RAIN
<.01 in
0% Thunder
( 6% severe)
S   6 81% 61°
Low 66° PORTSMOUTH, NH 03801 weather forecast Day 1, 3 hours 5 AM 68° 68° Mostly Cloudy SSW   9 81% 62°
High 93° PORTSMOUTH, NH 03801 weather forecast Day 1, 6 hours 8 AM 73° 73° Mostly Cloudy 32%
RAIN
***
0% Thunder
( 10% severe)
SW   12 76% 65°

Partly Cloudy

Chance of Rain

PORTSMOUTH, NH 03801 weather forecast Day 1, 9 hours 11 AM 83° 86° Partly Cloudy WSW   14 61% 68°
PORTSMOUTH, NH 03801 weather forecast Day 1, 12 hours 2 PM 90° 95° Partly Cloudy 7%

0% Thunder
( 3% severe)
W   14 50% 69°
PORTSMOUTH, NH 03801 weather forecast Day 1, 15 hours 5 PM 91° 95° Partly Cloudy WNW   12 47% 68°
PORTSMOUTH, NH 03801 weather forecast Day 1, 18 hours 8 PM 85° 88° Partly Cloudy 2%

0% Thunder
( 2% severe)
NW   7 57% 68°
PORTSMOUTH, NH 03801 weather forecast Day 1, 21 hours 11 PM 78° 80° Partly Cloudy NNW   5 69% 67°
Monday
23 JUN 2025
PORTSMOUTH, NH 03801 weather forecast Day 2, 0 hours 2 AM 72° 72° Partly Cloudy 2%

0% Thunder
( 0% severe)
NNW   2 81% 66°
Low 68° PORTSMOUTH, NH 03801 weather forecast Day 2, 3 hours 5 AM 69° 69° Partly Cloudy NNW   1 87% 65°
High 84° PORTSMOUTH, NH 03801 weather forecast Day 2, 6 hours 8 AM 73° 73° Partly Cloudy 1%

0% Thunder
( 1% severe)
E   1 76% 65°

Partly Cloudy



PORTSMOUTH, NH 03801 weather forecast Day 2, 9 hours 11 AM 80° 82° Partly Cloudy SSE   5 60% 65°
PORTSMOUTH, NH 03801 weather forecast Day 2, 12 hours 2 PM 81° 83° Partly Cloudy 3%

0% Thunder
( 9% severe)
SSE   8 58% 65°
PORTSMOUTH, NH 03801 weather forecast Day 2, 15 hours 5 PM 80° 82° Partly Cloudy SSE   9 58% 64°
PORTSMOUTH, NH 03801 weather forecast Day 2, 18 hours 8 PM 76° 78° Partly Cloudy 2%

0% Thunder
( 8% severe)
SSE   7 69% 65°
PORTSMOUTH, NH 03801 weather forecast Day 2, 21 hours 11 PM 73° 73° Partly Cloudy SSW   5 79% 66°

PORTSMOUTH, NH extended weather forecast

Tuesday
24 JUN 2025
Wednesday
25 JUN 2025
Thursday
26 JUN 2025
Friday
27 JUN 2025
Saturday
28 JUN 2025
Low 68° Low 72° Low 61° Low 56° Low 58°
High 96° High 83° High 70° High 69° High 70°
PORTSMOUTH, NH 03801 weather forecast Day 3 PORTSMOUTH, NH 03801 weather forecast Day 4 PORTSMOUTH, NH 03801 weather forecast Day 5 PORTSMOUTH, NH 03801 weather forecast Day 6 PORTSMOUTH, NH 03801 weather forecast Day 7
Partly Cloudy
8% Rain
Partly Cloudy
14% Rain
Overcast
53% Rain
Overcast
54% Rain
Overcast
65% Rain
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