PORTSMOUTH, NH 03803 Weather Forecast & Current Conditions

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03803 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
PORTSMOUTH, NH Current Weather
11:55 PM EDT MAY 19, 2026
Broken Clouds 72°F
Feels Like:	72°F
Dewpoint:	68°F
Rel. Hum.:	87%
Visibility:	10 miles
Wind:	WSW at 5 mph
Pressure:	29.86 inches
Last 72 hours
Local Area Snow Depth
New Hampshire Current Weather
New Hampshire MOS Forecast Weather

Regional Weather Maps

(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

TONIGHT
Partly cloudy with a chance of showers and thunderstorms this evening, then mostly clear after midnight. Some thunderstorms may produce gusty winds and small hail this evening. Lows in the upper 60s. Southwest winds around 10 mph. Chance of rain 40 percent.

WEDNESDAY
Partly sunny. A chance of showers with a slight chance of thunderstorms in the afternoon. Warm with highs in the upper 80s. West winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 30 percent.

WEDNESDAY NIGHT
Partly cloudy. A slight chance of showers in the evening. Less humid with lows in the lower 50s. Northwest winds 10 to 15 mph. Gusts up to 30 mph in the evening. Chance of rain 20 percent.

THURSDAY
Mostly cloudy in the morning, then becoming partly sunny. Cooler with highs in the mid 60s. Light and variable winds.

THURSDAY NIGHT
Mostly clear. Lows in the mid 40s. Light and variable winds.

FRIDAY
Partly sunny. Highs in the mid 60s.

FRIDAY NIGHT
Partly cloudy. Lows in the upper 40s.

SATURDAY
Mostly cloudy with a 30 percent chance of showers. Highs around 60.

SATURDAY NIGHT
Mostly cloudy with a 50 percent chance of showers. Lows in the mid 40s.

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

SUNDAY NIGHT
Mostly cloudy with a 50 percent chance of showers. Lows in the mid 40s.

MEMORIAL DAY
Mostly cloudy with a 50 percent chance of showers. Highs in the lower 60s.

MONDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s.

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 AM EDT 5/19/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Tuesday
19 MAY 2026

2 PM

89°

89°

Clear

31%
RAIN
<.01 in

0% Thunder
( 17% severe)

WSW 14

39%

61°

High 90°

5 PM

86°

87°

Mostly Cloudy

W 12

48%

64°

Partly Cloudy

Chance of Rain

8 PM

78°

80°

Partly Cloudy

2%

0% Thunder
( 6% severe)

WSW 8

62%

64°

11 PM

73°

73°

Clear

WSW 8

73%

64°

Wednesday
20 MAY 2026

2 AM

69°

69°

Partly Cloudy

5%

0% Thunder
( 2% severe)

SW 7

78%

62°

Low 69°

5 AM

69°

69°

Partly Cloudy

SW 8

76%

61°

High 88°

8 AM

74°

74°

Partly Cloudy

10%
RAIN
<.01 in

0% Thunder
( 5% severe)

WSW 9

69%

63°

Partly Cloudy

11 AM

83°

84°

Partly Cloudy

W 13

53%

64°

2 PM

84°

85°

Partly Cloudy

19%
RAIN
<.01 in

0% Thunder
( 8% severe)

W 15

49%

63°

5 PM

81°

82°

Partly Cloudy

W 14

51%

61°

8 PM

73°

73°

Mostly Cloudy

1%

0% Thunder
( 1% severe)

WNW 9

48%

52°

11 PM

65°

65°

Mostly Cloudy

NW 9

50%

46°

Thursday
21 MAY 2026

2 AM

58°

56°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

NW 9

53%

41°

Low 52°

5 AM

53°

50°

Mostly Cloudy

NW 8

57%

38°

High 66°

8 AM

53°

50°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

NNW 8

52%

36°

Partly Cloudy

11 AM

59°

58°

Partly Cloudy

NNW 6

39%

34°

2 PM

63°

63°

Partly Cloudy

0%

0% Thunder
( 0% severe)

WNW 6

34%

34°

5 PM

63°

63°

Partly Cloudy

WSW 8

32%

33°

8 PM

57°

56°

Partly Cloudy

WNW 6

42%

34°


PORTSMOUTH, NH extended weather forecast
Friday 22 MAY 2026	Saturday 23 MAY 2026	Sunday 24 MAY 2026	Monday 25 MAY 2026	Tuesday 26 MAY 2026
Low 42°	Low 48°	Low 45°	Low 46°	Low 50°
High 67°	High 66°	High 64°	High 65°	High 68°

Partly Cloudy 5% Rain	Partly Cloudy 7% Rain	Partly Cloudy 10% Rain	Overcast 50% Rain	Overcast 56% Rain

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