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Climate & Weather Averages in Portsmouth, Virginia, USA

Currently: 82 °F. Mostly cloudy. (Weather station: Norfolk Naval Air Station, USA). See more current weather

Annual Weather Averages Near Portsmouth

Averages are for Norfolk Naval Air Station, which is 7 miles from Portsmouth.

Based on weather reports collected during 1992–2021.

All Year Climate & Weather Averages in Portsmouth

High Temp: 89 °F

Low Temp: 35 °F

Mean Temp: 62 °F

Precipitation: 3.65"

Humidity: 68%

Dew Point: 50 °F

Wind: 16 mph

Pressure: 30.06 "Hg

Visibility: 8 mi

January Climate & Weather Averages in Portsmouth

High Temp: 50 °F

Low Temp: 35 °F

Mean Temp: 42 °F

Precipitation: 3.27"

Humidity: 65%

Dew Point: 31 °F

Wind: 18 mph

Pressure: 30.11 "Hg

Visibility: 7 mi

February Climate & Weather Averages in Portsmouth

High Temp: 53 °F

Low Temp: 36 °F

Mean Temp: 44 °F

Precipitation: 2.85"

Humidity: 64%

Dew Point: 32 °F

Wind: 18 mph

Pressure: 30.10 "Hg

Visibility: 7 mi

March Climate & Weather Averages in Portsmouth

High Temp: 60 °F

Low Temp: 42 °F

Mean Temp: 51 °F

Precipitation: 3.34"

Humidity: 63%

Dew Point: 37 °F

Wind: 19 mph

Pressure: 30.07 "Hg

Visibility: 7 mi

April Climate & Weather Averages in Portsmouth

High Temp: 70 °F

Low Temp: 51 °F

Mean Temp: 60 °F

Precipitation: 3.07"

Humidity: 62%

Dew Point: 46 °F

Wind: 19 mph

Pressure: 30.01 "Hg

Visibility: 8 mi

May Climate & Weather Averages in Portsmouth

High Temp: 77 °F

Low Temp: 60 °F

Mean Temp: 69 °F

Precipitation: 3.53"

Humidity: 68%

Dew Point: 56 °F

Wind: 16 mph

Pressure: 30.02 "Hg

Visibility: 7 mi

June Climate & Weather Averages in Portsmouth

High Temp: 85 °F

Low Temp: 69 °F

Mean Temp: 77 °F

Precipitation: 4.02"

Humidity: 70%

Dew Point: 65 °F

Wind: 15 mph

Pressure: 29.99 "Hg

Visibility: 7 mi

July Climate & Weather Averages in Portsmouth

High Temp: 89 °F

Low Temp: 74 °F

Mean Temp: 81 °F

Precipitation: 4.85"

Humidity: 71%

Dew Point: 70 °F

Wind: 14 mph

Pressure: 30.00 "Hg

Visibility: 7 mi

August Climate & Weather Averages in Portsmouth

High Temp: 87 °F

Low Temp: 72 °F

Mean Temp: 80 °F

Precipitation: 5.01"

Humidity: 73%

Dew Point: 69 °F

Wind: 13 mph

Pressure: 30.03 "Hg

Visibility: 8 mi

September Climate & Weather Averages in Portsmouth

High Temp: 81 °F

Low Temp: 68 °F

Mean Temp: 74 °F

Precipitation: 4.65"

Humidity: 73%

Dew Point: 64 °F

Wind: 16 mph

Pressure: 30.05 "Hg

Visibility: 8 mi

October Climate & Weather Averages in Portsmouth

High Temp: 72 °F

Low Temp: 57 °F

Mean Temp: 64 °F

Precipitation: 3.26"

Humidity: 70%

Dew Point: 53 °F

Wind: 16 mph

Pressure: 30.07 "Hg

Visibility: 8 mi

November Climate & Weather Averages in Portsmouth

High Temp: 62 °F

Low Temp: 45 °F

Mean Temp: 54 °F

Precipitation: 3.11"

Humidity: 67%

Dew Point: 42 °F

Wind: 16 mph

Pressure: 30.13 "Hg

Visibility: 8 mi

December Climate & Weather Averages in Portsmouth

High Temp: 54 °F

Low Temp: 39 °F

Mean Temp: 47 °F

Precipitation: 2.86"

Humidity: 68%

Dew Point: 36 °F

Wind: 17 mph

Pressure: 30.13 "Hg

Visibility: 7 mi

Quick Climate Info

Hottest MonthJuly (81 °F avg)
Coldest MonthJanuary (42 °F avg)
Wettest MonthAugust (5.01" avg)
Windiest MonthMarch (19 mph avg)
Annual precip.43.82" (per year)

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