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 PM EDT APR 21, 2026
Few Clouds 39°F
Feels Like:	33°F
Dewpoint:	27°F
Rel. Hum.:	61%
Visibility:	10 miles
Wind:	SE at 9 mph
Pressure:	30.25 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
Mostly clear this evening, then partly cloudy with a slight chance of snow showers after midnight. Lows in the mid 30s. South winds around 10 mph with gusts up to 20 mph this evening, becoming light and variable. Chance of snow 20 percent.

WEDNESDAY
Isolated snow showers in the morning. Cloudy with scattered rain showers. Highs in the mid 40s. South winds around 10 mph. Chance of precipitation 50 percent.

WEDNESDAY NIGHT
Mostly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 30s. Light and variable winds. Chance of rain 30 percent.

THURSDAY
Partly sunny. A chance of showers in the morning. Highs in the mid 50s. Northwest winds around 10 mph. Chance of rain 30 percent.

THURSDAY NIGHT
Mostly clear. Lows in the mid 30s. Northwest winds around 10 mph in the evening, becoming light and variable.

FRIDAY
Partly sunny. Highs in the lower 50s.

FRIDAY NIGHT
Partly cloudy in the evening, then clearing. Lows in the lower 30s.

SATURDAY
Mostly sunny. Highs in the lower 50s.

SATURDAY NIGHT
Partly cloudy. Lows in the mid 30s.

SUNDAY
Partly sunny. Highs in the mid 50s.

SUNDAY NIGHT
Partly cloudy. Lows in the upper 30s.

MONDAY
Partly sunny. Highs in the mid 50s.

MONDAY NIGHT
Partly cloudy. Lows around 40.

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 4/21/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Tuesday
21 APR 2026

2 PM

45°

41°

Partly Cloudy

1%

0% Thunder
( 0% severe)

SE 7

29%

16°

High 46°

5 PM

44°

39°

Clear

SE 9

35%

19°

Partly Cloudy

8 PM

39°

33°

Clear

9%

0% Thunder
( 0% severe)

SSE 8

51%

23°

11 PM

38°

32°

Partly Cloudy

S 8

61%

26°

Wednesday
22 APR 2026

2 AM

37°

32°

Partly Cloudy

14%
RAIN
<.01 in

0% Thunder
( 1% severe)

S 6

66%

27°

Low 35°

5 AM

36°

31°

Mostly Cloudy

S 6

75%

29°

High 47°

8 AM

40°

36°

Mostly Cloudy

25%
RAIN
<.01 in

0% Thunder
( 2% severe)

S 6

70%

31°

Mostly Cloudy

Chance of Rain

11 AM

43°

38°

Mostly Cloudy

S 8

70%

34°

2 PM

45°

40°

Mostly Cloudy

18%
RAIN
.1–.25 in

0% Thunder
( 1% severe)

S 10

71%

36°

5 PM

45°

41°

Mostly Cloudy

S 8

71%

36°

8 PM

43°

40°

Mostly Cloudy

10%
RAIN
<.01 in

0% Thunder
( 2% severe)

S 5

79%

37°

11 PM

42°

40°

Mostly Cloudy

S 3

82%

37°

Thursday
23 APR 2026

2 AM

41°

39°

Mostly Cloudy

14%
RAIN
<.01 in

0% Thunder
( 5% severe)

SSW 2

89%

38°

Low 38°

5 AM

40°

38°

Mostly Cloudy

WSW 2

92%

38°

High 57°

8 AM

43°

41°

Mostly Cloudy

9%

0% Thunder
( 3% severe)

W 3

86%

39°

Partly Cloudy

11 AM

51°

48°

Partly Cloudy

NW 7

59%

37°

2 PM

54°

51°

Partly Cloudy

7%

0% Thunder
( 2% severe)

NW 10

43%

32°

5 PM

54°

51°

Partly Cloudy

NW 10

38%

29°

8 PM

47°

44°

Partly Cloudy

NNW 7

49%

29°


PORTSMOUTH, NH extended weather forecast
Friday 24 APR 2026	Saturday 25 APR 2026	Sunday 26 APR 2026	Monday 27 APR 2026	Tuesday 28 APR 2026
Low 35°	Low 35°	Low 40°	Low 41°	Low 42°
High 53°	High 61°	High 58°	High 59°	High 61°

Partly Cloudy 5% Rain/Snow	Partly Cloudy 10% Rain	Partly Cloudy 24% Rain	Partly Cloudy 24% Rain	Partly Cloudy 30% Rain

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