PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

Local Weather
- Local weather by ZIP or City
- Local area snow depth
- CURRENT WEATHER MAPS
- - Fronts & Pressure Centers
- - Current U.S. Temperatures
- - Northwest U.S.
- - Northeast U.S.
- - Mid-Atlantic U.S.
- - Midwest U.S.
- - Central Plains U.S.
- - Southeast U.S.
- - Southern Plains U.S.
- - Southwest U.S.
- - Alaska
10 Day Forecasts
Other Forecasts
- Snowstorm Forecast
- U.S. 6-hourly Snowfall Forecast
- 3 DAY NAM MODEL FORECASTS
- - Clouds & Precipitation
- - Temperature
- 7 DAY NWS FORECASTS
- - Weather Type
- - Precip. Probability
- - High Temperatures
- - Low Temperatures
- - Cloud Cover
- - Wind
- - Relative Humidity
- - Dewpoint
- - Snowfall
- SEASONAL FORECASTS
- - Temperature
- - Precipitation
Severe Weather
Radar
- U.S. RADAR (NWS interactive)
- U.S. RADAR (by state)
Satellite

03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
6:55 AM EDT JUL 21, 2026
Overcast 64°F
Feels Like:	64°F
Dewpoint:	57°F
Rel. Hum.:	78%
Visibility:	10 miles
Wind:	SE at 6 mph
Pressure:	29.94 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 2025 Hurricanes	PORTSMOUTH, NH 03803 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TODAY
Mostly cloudy. A slight chance of showers and thunderstorms this afternoon. Highs in the upper 70s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.

TONIGHT
Showers with a chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Patchy fog. Humid with lows in the mid 60s. South winds around 10 mph. Gusts up to 25 mph in the evening. Chance of rain near 100 percent.

WEDNESDAY
Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the morning, then partly sunny with showers likely with a chance of thunderstorms in the afternoon. Some thunderstorms may produce gusty winds in the afternoon. Humid with highs in the mid 80s. Southwest winds around 10 mph. Chance of rain 60 percent. Heat index values around 90 in the afternoon.

WEDNESDAY NIGHT
Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows around 60. West winds around 10 mph in the evening, becoming light and variable. Chance of rain 50 percent.

THURSDAY
Mostly sunny. Highs in the upper 70s. Light and variable winds.

THURSDAY NIGHT
Clear. Lows in the upper 50s.

FRIDAY
Sunny. Highs in the upper 70s.

FRIDAY NIGHT
Mostly clear. Lows in the upper 50s.

SATURDAY
Mostly sunny. Highs in the upper 70s.

SATURDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s.

SUNDAY
Partly sunny. Highs in the upper 70s.

SUNDAY NIGHT
Partly cloudy. Lows in the lower 60s.

MONDAY
Partly sunny. A chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 40 percent.

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 7/20/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Tuesday
21 JUL 2026

2 AM

64°

64°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

SSW 7

73%

55°

Low 60°

5 AM

61°

61°

Mostly Cloudy

S 6

81%

55°

High 79°

8 AM

66°

66°

Mostly Cloudy

7%

0% Thunder
( 3% severe)

S 7

78%

59°

Mostly Cloudy

Chance of Rain

11 AM

75°

75°

Mostly Cloudy

SSE 13

62%

61°

2 PM

77°

79°

Mostly Cloudy

45%
RAIN
.1–.25 in

0% Thunder
( 36% severe)

SSE 17

56%

60°

5 PM

74°

74°

Mostly Cloudy

SE 16

64%

61°

8 PM

70°

70°

Mostly Cloudy

96%
RAIN
***

0% Thunder
( 34% severe)

SE 13

81%

64°

11 PM

68°

68°

Overcast

S 10

100%

68°

Wednesday
22 JUL 2026

2 AM

69°

69°

Overcast

37%
RAIN
.1–.25 in

0% Thunder
( 12% severe)

S 9

100%

69°

Low 65°

5 AM

68°

68°

Mostly Cloudy

SSW 9

100%

68°

High 84°

8 AM

71°

71°

Mostly Cloudy

26%
RAIN
.1–.25 in

0% Thunder
( 16% severe)

SSW 9

93%

69°

Mostly Cloudy

Chance of Rain

11 AM

78°

80°

Mostly Cloudy

SSW 12

76%

70°

2 PM

82°

86°

Mostly Cloudy

41%
RAIN
.01–.1 in

0% Thunder
( 25% severe)

SSW 12

67%

70°

5 PM

81°

84°

Partly Cloudy

SW 12

69%

70°

8 PM

75°

75°

Mostly Cloudy

6%

0% Thunder
( 7% severe)

WSW 8

74%

66°

11 PM

69°

69°

Partly Cloudy

W 7

84%

64°


PORTSMOUTH, NH extended weather forecast
Thursday 23 JUL 2026	Friday 24 JUL 2026	Saturday 25 JUL 2026	Sunday 26 JUL 2026	Monday 27 JUL 2026
Low 60°	Low 56°	Low 59°	Low 57°	Low 62°
High 78°	High 80°	High 77°	High 78°	High 84°

Partly Cloudy 14% Rain	Partly Cloudy 7% Rain	Partly Cloudy 10% Rain	Partly Cloudy 15% Rain	Partly Cloudy 17% Rain

SELECT BOX EXAMPLES:

for LOCAL WEATHER:
SNOW DEPTH:
LOCAL WEATHER RADAR:
STATE WEATHER MAP:

Portsmouth, NH
Portsmouth, NH snow
Portsmouth, NH radar
NH map

-or-
-or-
-or-

03803
03803 snow
03803 radar

-or-
-or-

NH
NH snow

Copyright © 2024 WeatherStreet.com

Put our free WeatherStreet weather lookup on your web page.

Terms & Conditions
This is not clickable - please e-mail us separately

This is not clickable - please e-mail us separately