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As of 14:37 EDT

Weather in Portsmouth, NH

90°Current weather

Portsmouth, Sunday, 9 August, 14:37

Clear. Feels like 94°. High 90°, low 69°.

Pressure29.85 inHg
Wind2 mph NW
Humidity50%
Visibility6.2 mi
Dew point69°

10-day forecast for Portsmouth, NH: 54° to 90°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.

90°
Best day: Sunday, August 9
72° · 1.28 in
Worst day: Sunday, August 16

Tap any day below to see morning, afternoon, evening and overnight.

Mon, 1088° / 67°0.03Light rain
MorningPartly cloudy76°feels 77°
AfternoonOvercast85°feels 87°
EveningLight rain74°feels 76°
OvernightMostly clear70°feels 71°
88 °Light rain

Portsmouth, Monday, 10 August

Light rain. High 88°, low 67°.

Pressure29.94 inHg
Wind9.4 mph SE
Humidity51%
Visibility6.2 mi
Dew point59°
Tue, 1185° / 66°0Mostly clear
MorningPartly cloudy76°feels 77°
AfternoonPartly cloudy84°feels 83°
EveningClear73°feels 72°
OvernightOvercast71°feels 72°
85 °Mostly clear

Portsmouth, Tuesday, 11 August

Mostly clear. High 85°, low 66°.

Pressure29.74 inHg
Wind12 mph NW
Humidity43%
Visibility6.2 mi
Dew point58°
Wed, 1275° / 62°0Light rain
MorningOvercast70°feels 69°
AfternoonOvercast71°feels 71°
EveningOvercast66°feels 66°
OvernightPartly cloudy64°feels 63°
75 °Light rain

Portsmouth, Wednesday, 12 August

Light rain. High 75°, low 62°.

Pressure29.80 inHg
Wind5.5 mph W
Humidity67%
Visibility6.2 mi
Dew point58°
Thu, 1382° / 61°0Overcast
MorningPartly cloudy69°feels 69°
AfternoonPartly cloudy82°feels 81°
EveningOvercast76°feels 76°
OvernightMostly clear61°feels 61°
82 °Overcast

Portsmouth, Thursday, 13 August

Overcast. High 82°, low 61°.

Pressure29.71 inHg
Wind9.6 mph W
Humidity45%
Visibility6.2 mi
Dew point57°
Fri, 1475° / 58°0Partly cloudy
MorningPartly cloudy62°feels 61°
AfternoonPartly cloudy72°feels 70°
EveningPartly cloudy73°feels 72°
OvernightPartly cloudy59°feels 58°
75 °Partly cloudy

Portsmouth, Friday, 14 August

Partly cloudy. High 75°, low 58°.

Pressure30.00 inHg
Wind14.7 mph NW
Humidity38%
Visibility—
Dew point42°
Sat, 1574° / 54°0Overcast
MorningOvercast59°feels 58°
AfternoonOvercast72°feels 71°
EveningOvercast69°feels 69°
OvernightOvercast58°feels 58°
74 °Overcast

Portsmouth, Saturday, 15 August

Overcast. High 74°, low 54°.

Pressure30.18 inHg
Wind11.4 mph S
Humidity41%
Visibility—
Dew point45°
Sun, 1672° / 57°1.28Heavy rain
MorningHeavy rain62°feels 61°
AfternoonHeavy rain72°feels 71°
EveningHeavy rain68°feels 69°
OvernightHeavy rain69°feels 70°
72 °Heavy rain

Portsmouth, Sunday, 16 August

Heavy rain. High 72°, low 57°.

Pressure30.00 inHg
Wind22.3 mph S
Humidity58%
Visibility—
Dew point55°
Mon, 1772° / 59°0.17Light rain
MorningLight rain62°feels 62°
AfternoonLight rain71°feels 70°
EveningLight rain64°feels 64°
OvernightLight rain61°feels 61°
72 °Light rain

Portsmouth, Monday, 17 August

Light rain. High 72°, low 59°.

Pressure30.03 inHg
Wind13.3 mph N
Humidity56%
Visibility—
Dew point53°
Tue, 1874° / 61°0.19Light rain
MorningLight rain64°feels 64°
AfternoonLight rain70°feels 70°
EveningLight rain68°feels 68°
OvernightLight rain63°feels 64°
74 °Light rain

Portsmouth, Tuesday, 18 August

Light rain. High 74°, low 61°.

Pressure29.94 inHg
Wind10.3 mph N
Humidity69%
Visibility—
Dew point58°

About this forecast

How reliable is a 10-day forecast?

The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.

What does the time-of-day table show?

Temperature in Portsmouth, NH around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.

How is the best day chosen?

We weigh the daytime high against precipitation: a warm, dry day scores highest.