Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
Port Royal's coldest month, January, registers temperatures that range from a high of 32.9°F (0.5°C) to a low of 19.9°F (-6.7°C).Humidity
The average relative humidity in January in Port Royal is 79%.Rainfall
The months with the least rainfall are January and November Rain falls for 9.2 days and accumulates 1.85" (47mm) of rain.Snowfall
January through May, October through December are months with snowfall in Port Royal. January is the month with the most snowfall. Snow falls for 10.9 days and accumulates 4.49" (114mm) of snow.Daylight
In Port Royal, Pennsylvania, the average length of the day in January is 9h and 40min.On the first day of the month, sunrise is at 7:32 am and sunset at 4:53 pm. On the last day of January, sunrise is at 7:20 am and sunset at 5:25 pm EST.
Sunshine
January has the least sunshine of the year in Port Royal, with an average of 4h of sunshine.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 2 during January morphs into the following directions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. It's recommended to limit sun exposure when its radiation is at its peak during midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What are the coldest months in Port Royal?
How cold is it in Port Royal in January?
What is the average humidity in January in Port Royal?
What is the driest month in Port Royal?
How many days does it rain in January in Port Royal?
What is the snowiest month in Port Royal?
How much does it snow in Port Royal in January?
What is the average length of the day in January in Port Royal?
When are sunrise and sunset in January in Port Royal?
What is the month with the least sunshine in Port Royal?
How many hours of sunshine does Port Royal have in January?
What is the month with the lowest UV index in Port Royal?
What is the UV index reading in January in Port Royal?
Average temperature in January
Port Royal, PA
- Average high temperature in January: 32.9°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in January: 19.9°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in January
Port Royal, PA
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in January
Port Royal, PA
- Average wind speed in January: 7.5mph
The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in January
Port Royal, PA
- Average humidity in January: 79%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is July (75%).
Average rainfall in January
Port Royal, PA
- Average rainfall in January: 1.85"
The wettest month (with the highest rainfall) is May (3.31").
The driest months (with the least rainfall) are January and November (1.85").
Average rainfall days in January
Port Royal, PA
- Average rainfall days in January: 9.2 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in January
Port Royal, PA
- Average snowfall in January: 4.49"
The month with the highest snowfall is January (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Port Royal, PA
- Average snowfall days in January: 10.9 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Port Royal, PA
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 4h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in January
Port Royal, PA
- Average sunshine days in January: 15.2 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in January
Port Royal, PA
- Average UV index in January: 2
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Port Royal, PA
- Average cloud cover in January: 57
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in January
Port Royal, PA
- Average visibility in January: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Port Royal, Pennsylvania, USA
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