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 AM EST DEC 17, 2025
Overcast 39°F
Feels Like:	31°F
Dewpoint:	21°F
Rel. Hum.:	47%
Visibility:	10 miles
Wind:	SSW at 14 mph, gusts to 21
Pressure:	29.73 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

TODAY
Partly sunny. Highs in the lower 40s. Southwest winds 10 to 15 mph with gusts up to 25 mph.

TONIGHT
Mostly clear. Lows in the mid 20s. West winds around 10 mph.

THURSDAY
Partly sunny. Highs in the mid 40s. Light and variable winds, becoming south around 10 mph with gusts up to 20 mph in the afternoon.

THURSDAY NIGHT
Mostly cloudy. Rain likely after midnight. Lows in the mid 30s. Temperatures rising into the mid 40s after midnight. South winds 10 to 15 mph. Gusts up to 30 mph after midnight. Chance of rain 70 percent.

FRIDAY
Rain. Highs in the mid 50s. South winds 15 to 20 mph with gusts up to 40 mph. Chance of rain near 100 percent.

FRIDAY NIGHT
Partly cloudy. A chance of rain in the evening. Lows in the mid 20s. Chance of rain 30 percent.

SATURDAY
Partly sunny. Highs in the upper 30s.

SATURDAY NIGHT
Cloudy. Lows in the upper 20s.

SUNDAY
Mostly cloudy in the morning, then becoming partly sunny. Highs in the mid 40s.

SUNDAY NIGHT
Partly cloudy. Lows in the lower 20s.

MONDAY
Mostly sunny. Highs in the lower 30s.

MONDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows 15 to 20.

TUESDAY
Partly sunny in the morning, then mostly cloudy with a chance of rain and snow in the afternoon. Highs in the mid 30s. Chance of precipitation 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 7:00 AM EST 12/17/2025

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
17 DEC 2025

1 PM

43°

36°

Mostly Cloudy

3%

0% Thunder
( 0% severe)

SW 15

50%

26°

High 44°

4 PM

42°

35°

Partly Cloudy

WSW 13

60%

29°

Decreasing Clouds

7 PM

39°

32°

Partly Cloudy

0%

0% Thunder
( 0% severe)

WSW 10

70%

30°

10 PM

38°

31°

Clear

W 10

70%

29°

Thursday
18 DEC 2025

1 AM

35°

28°

Clear

0%

0% Thunder
( 0% severe)

W 8

69%

26°

Low 25°

4 AM

31°

26°

Partly Cloudy

W 5

71%

23°

High 45°

7 AM

28°

25°

Clear

0%

0% Thunder
( 0% severe)

SW 2

76%

22°

Partly Cloudy

10 AM

35°

31°

Partly Cloudy

SSW 5

66%

25°

1 PM

42°

36°

Partly Cloudy

2%

0% Thunder
( 0% severe)

S 9

55%

27°

4 PM

41°

35°

Partly Cloudy

S 9

65%

30°

7 PM

38°

32°

Mostly Cloudy

12%
RAIN
<.01 in

0% Thunder
( 1% severe)

S 8

85%

34°

10 PM

41°

36°

Mostly Cloudy

S 8

86%

37°

Friday
19 DEC 2025

1 AM

44°

39°

Mostly Cloudy

76%
RAIN
1–2 in

0% Thunder
( 3% severe)

S 9

89%

41°

Low 37°

4 AM

47°

41°

Mostly Cloudy

S 13

93%

45°

High 56°

7 AM

50°

44°

Overcast

98%
RAIN
***

0% Thunder
( 2% severe)

S 16

93%

48°

Overcast

Rain

Breezy

10 AM

54°

49°

Overcast

S 20

90%

51°

1 PM

55°

50°

Mostly Cloudy

60%
RAIN
***

0% Thunder
( 2% severe)

S 18

83%

50°

4 PM

50°

44°

Mostly Cloudy

WSW 16

77%

43°

7 PM

41°

33°

Mostly Cloudy

W 14

73%

33°


PORTSMOUTH, NH extended weather forecast
Saturday 20 DEC 2025	Sunday 21 DEC 2025	Monday 22 DEC 2025	Tuesday 23 DEC 2025	Wednesday 24 DEC 2025
Low 28°	Low 26°	Low 23°	Low 13°	Low 17°
High 38°	High 43°	High 30°	High 29°	High 35°

Partly Cloudy 30% Rain/Snow	Overcast 27% Rain/Snow	Clear 18% Snow	Clear 11% Snow	Partly Cloudy 15% Snow

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