PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
7:55 AM EDT JUN 21, 2026
Few Clouds 66°F
Feels Like:	66°F
Dewpoint:	57°F
Rel. Hum.:	73%
Visibility:	10 miles
Wind:	W at 7 mph
Pressure:	29.77 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
Partly sunny. A chance of showers and thunderstorms this afternoon. Highs in the mid 70s. Light and variable winds. Chance of rain 50 percent.

TONIGHT
Mostly clear with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 50s. Light and variable winds. Chance of rain 20 percent.

MONDAY
Partly sunny in the morning, then cloudy with a chance of showers in the afternoon. Highs in the mid 70s. Light and variable winds. Chance of rain 30 percent.

MONDAY NIGHT
Showers. Lows in the upper 50s. Light and variable winds. Chance of rain near 100 percent.

TUESDAY
Mostly cloudy with showers likely in the morning, then partly sunny with a chance of showers in the afternoon. Highs in the upper 70s. Light and variable winds. Chance of rain 70 percent.

TUESDAY NIGHT
Partly cloudy in the evening, then clearing. Lows in the upper 50s.

WEDNESDAY
Mostly sunny. Highs in the lower 80s.

WEDNESDAY NIGHT
Mostly clear. Lows around 60.

THURSDAY
Mostly sunny. Highs around 80.

THURSDAY NIGHT
Partly cloudy. A chance of showers after midnight. Lows around 60. Chance of rain 40 percent.

FRIDAY
Partly sunny in the morning, then becoming mostly cloudy. A chance of showers. Highs in the upper 70s. Chance of rain 50 percent.

FRIDAY NIGHT
Partly cloudy with a chance of showers. Lows in the lower 60s. Chance of rain 50 percent.

SATURDAY
Partly sunny. A chance of showers in the afternoon. Warm with highs in the mid 80s. Chance of rain 30 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 6/20/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Sunday
21 JUN 2026

2 AM

61°

61°

Mostly Cloudy

2%

0% Thunder
( 1% severe)

W 5

87%

57°

Low 58°

5 AM

59°

59°

Partly Cloudy

W 5

90%

56°

High 80°

8 AM

66°

66°

Clear

24%
RAIN
<.01 in

0% Thunder
( 10% severe)

W 5

73%

57°

Increasing Clouds

Chance of Rain

11 AM

75°

75°

Partly Cloudy

WNW 6

54%

57°

2 PM

76°

78°

Mostly Cloudy

40%
RAIN
.1–.25 in

0% Thunder
( 30% severe)

NW 6

52%

57°

5 PM

74°

74°

Mostly Cloudy

NW 5

62%

60°

8 PM

70°

70°

Partly Cloudy

4%

0% Thunder
( 7% severe)

CALM

71%

60°

11 PM

63°

64°

Partly Cloudy

W 2

87%

59°

Monday
22 JUN 2026

2 AM

60°

61°

Partly Cloudy

0%

0% Thunder
( 0% severe)

W 2

90%

57°

Low 57°

5 AM

57°

58°

Partly Cloudy

CALM

96%

56°

High 79°

8 AM

66°

66°

Mostly Cloudy

5%

0% Thunder
( 0% severe)

CALM

78%

59°

Mostly Cloudy

Rain Likely

11 AM

75°

75°

Mostly Cloudy

SSE 2

58%

59°

2 PM

74°

74°

Mostly Cloudy

57%
RAIN
***

0% Thunder
( 9% severe)

S 7

59%

59°

5 PM

70°

70°

Overcast

SSE 8

71%

60°

8 PM

67°

67°

Mostly Cloudy

87%
RAIN
***

0% Thunder
( 14% severe)

ESE 6

75%

59°

11 PM

63°

63°

Mostly Cloudy

E 7

90%

60°


PORTSMOUTH, NH extended weather forecast
Tuesday 23 JUN 2026	Wednesday 24 JUN 2026	Thursday 25 JUN 2026	Friday 26 JUN 2026	Saturday 27 JUN 2026
Low 59°	Low 59°	Low 60°	Low 62°	Low 62°
High 74°	High 80°	High 77°	High 76°	High 79°

Overcast 100% Rain	Partly Cloudy 12% Rain	Mostly Cloudy 27% Rain	Overcast 59% Rain	Overcast 63% Rain

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