January weather forecast
Port Royal, VA

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Weather in January

January, like December, in Port Royal, Virginia, is an icy winter month, with an average temperature fluctuating between 42.3°F (5.7°C) and 28.8°F (-1.8°C).

Temperature

Port Royal, Virginia, reaches its lowest average temperatures in January, measuring 42.3°F (5.7°C) at the peak and 28.8°F (-1.8°C) at the lowest.

Humidity

In January, the average relative humidity is 74%.

Rainfall

In Port Royal, Virginia, in January, it is raining for 9.4 days, with typically 2.05" (52mm) of accumulated precipitation. Throughout the year, in Port Royal, Virginia, there are 158.1 rainfall days, and 30.47" (774mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in Port Royal. January is the month with the most snowfall in Port Royal. Snow falls for 4 days and accumulates 1.85" (47mm) of snow.

Daylight

In January, the average length of the day in Port Royal is 9h and 52min.
On the first day of January, sunrise is at 7:25 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:29 pm EST.

Sunshine

In Port Royal, the average sunshine in January is 5.4h.

UV index

The months with the lowest UV index in Port Royal are January, February and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In January, an average UV index of 2 transforms into the following instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. When the Sun is at its strongest around midday, find shade and limit exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest in Port Royal?

January, with its average high-temperature of 42.3°F (5.7°C) and an average low-temperature of 28.8°F (-1.8°C), holds the record as the coldest month in Port Royal, Virginia.

Is it cold in Port Royal during January?

In January, in Port Royal, the average high-temperature is 42.3°F (5.7°C), and the average low-temperature is 28.8°F (-1.8°C).

What is the average humidity in January in Port Royal?

In Port Royal, Virginia, the average relative humidity in January is 74%.

How much does it rain in Port Royal in January?

In Port Royal, in January, it is raining for 9.4 days, with typically 2.05" (52mm) of accumulated precipitation.

What is the snowiest month in Port Royal?

The month with the most snowfall in Port Royal is January, when snow falls for 4 days and typically aggregates up to 1.85" (47mm) of snow.

How much does it snow in Port Royal in January?

In Port Royal, Virginia, in January, during 4 snowfall days, 1.85" (47mm) of snow is typically accumulated.

What is the average length of the day in January in Port Royal?

In Port Royal, Virginia, the average day length in January is 9h and 52min.

What time are sunrise and sunset in January in Port Royal?

In January, on the first day of the month, sunrise is at 7:25 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:29 pm EST.

How long on average sun shines in January in Port Royal?

The average sunshine duration in January in Port Royal, Virginia, is 5.4h.

What are the months with the lowest UV index in Port Royal?

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Port Royal.

What is the UV index reading in January in Port Royal?

The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Port Royal, VA

Average temperature in January - Port Royal, VA
  • Average high temperature in January: 42.3°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (42.3°F).

  • Average low temperature in January: 28.8°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

Average pressure in January
Port Royal, VA

Average pressure in January - Port Royal, VA
  • Average pressure in January: 30.11"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in January
Port Royal, VA

Average wind speed in January - Port Royal, VA
  • Average wind speed in January: 7.4mph

The windiest month (with the highest average wind speed) is April (8mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in January
Port Royal, VA

Average humidity in January - Port Royal, VA
  • Average humidity in January: 74%

The months with the highest relative humidity are May and December (78%).
The month with the lowest relative humidity is April (73%).

Average rainfall in January
Port Royal, VA

Average rainfall in January - Port Royal, VA
  • Average rainfall in January: 2.05"

The wettest months (with the highest rainfall) are July and August (3.19").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in January
Port Royal, VA

Average rainfall days in January - Port Royal, VA
  • Average rainfall days in January: 9.4 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (9.4 days).

Average snowfall in January
Port Royal, VA

Average snowfall in January - Port Royal, VA
  • Average snowfall in January: 1.85"

The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Port Royal, VA

Average snowfall days in January - Port Royal, VA
  • Average snowfall days in January: 4 days

The month with the highest number of snowfall days is January (4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in January /
Average sunshine in January
Port Royal, VA

Average daylight in January / Average sunshine in January - Port Royal, VA
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in January: 5h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).

Average sunshine days in January
Port Royal, VA

Average sunshine days in January - Port Royal, VA
  • Average sunshine days in January: 18.1 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (11.9 days).

Average UV index in January
Port Royal, VA

Average UV index in January - Port Royal, VA
  • Average UV index in January: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in January
Port Royal, VA

Average cloud cover in January - Port Royal, VA
  • Average cloud cover in January: 42

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in January
Port Royal, VA

Average visibility in January - Port Royal, VA
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

Port Royal, Virginia, USA

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