Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The onset of December introduces a moderate change in Port Clarence's weather, with average high-temperatures falling from November's 26.4°F (-3.1°C) to a still subzero cold 16.7°F (-8.5°C). Port Clarence navigates through December with a barely noticeable decrease in temperature at night, stabilizing at a frigid cold 10.8°F (-11.8°C).Humidity
The average relative humidity in December is 89%.Rainfall
In Port Clarence, in December, during 1.9 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. In Port Clarence, during the entire year, the rain falls for 86.5 days and collects up to 14.25" (362mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In Port Clarence, in December, snow falls for 11.1 days, with typically accumulated 2.48" (63mm) of snow. Throughout the year, there are 90 snowfall days, and 20.51" (521mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 3h and 42min of daylight.On the first day of the month, sunrise is at 11:44 am and sunset at 4:09 pm. On the last day of December, sunrise is at 12:18 pm and sunset at 4:03 pm AKST.
Sunshine
In December, the average sunshine is 1.1h.UV index
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 1 during December leads to these instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Port Clarence have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Port Clarence have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Port Clarence, AK
- Average high temperature in December: 16.7°F
The warmest month (with the highest average high temperature) is August (50°F).
The month with the lowest average high temperature is January (9°F).
- Average low temperature in December: 10.8°F
The month with the highest average low temperature is August (45.3°F).
The coldest months (with the lowest average low temperature) are February and March (1.8°F).
Average pressure in December
Port Clarence, AK
- Average pressure in December: 29.77"Hg
The month with the highest atmospheric pressure is May (29.96"Hg).
The month with the lowest atmospheric pressure is October (29.72"Hg).
Average wind speed in December
Port Clarence, AK
- Average wind speed in December: 17.5mph
The windiest month (with the highest average wind speed) is December (17.5mph).
The calmest month (with the lowest average wind speed) is May (12mph).
Average humidity in December
Port Clarence, AK
- Average humidity in December: 89%
The month with the highest relative humidity is March (93%).
The months with the lowest relative humidity are October and November (79%).
Average rainfall in December
Port Clarence, AK
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is August (2.01").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in December
Port Clarence, AK
- Average rainfall days in December: 1.9 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is January (1.3 days).
Average snowfall in December
Port Clarence, AK
- Average snowfall in December: 2.48"
The month with the highest snowfall is February (3.62").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Port Clarence, AK
- Average snowfall days in December: 11.1 days
The month with the highest number of snowfall days is April (13 days).
The month with the least snowfall days is July (0 days).
Average daylight in December /
Average sunshine in December
Port Clarence, AK
- Average daylight in December: 3h and 4min
The month with the longest days is June (Average daylight: 22h and 0min).
The month with the shortest days is December (Average daylight: 3h and 42min).
- Average sunshine in December: 1h and 1min
The month with the most sunshine is August (Average sunshine: 5h and 42min).
The month with the least sunshine is June (Average sunshine: 0h and 36min).
Average sunshine days in December
Port Clarence, AK
- Average sunshine days in December: 11.2 days
The month with the most sunshine days is June (18.4 days).
The month with the least sunshine days is October (11.1 days).
Average UV index in December
Port Clarence, AK
- Average UV index in December: 1
The month with the highest UV index is July (UV index 3).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in December
Port Clarence, AK
- Average cloud cover in December: 76
The month with the most cloud cover is February (Cloud cover 78).
The month with the least cloud cover is June (Cloud cover 52).
Average visibility in December
Port Clarence, AK
- Average visibility in December: 5mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, November and December (5mi).
Port Clarence, Alaska, USA
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