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
Whittier's weather in December, with an average high-temperature of a still freezing cold 22.8°F (-5.1°C), subtly shifts from November's 25.5°F (-3.6°C). Throughout the month of December, Whittier witnesses an average low-temperature of 13.6°F (-10.2°C).Humidity
In December, the average relative humidity is 91%.Rainfall
In December, the rain falls for 11.1 days. Throughout December, 12.09" (307mm) of precipitation is accumulated. In Whittier, during the entire year, the rain falls for 199.9 days and collects up to 94.88" (2410mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Whittier. The month with the most snowfall is December, when snow falls for 21.9 days and typically aggregates up to 46.38" (1178mm) of snow.Daylight
December has the shortest days of the year, with an average of 5h and 48min of daylight.On the first day of the month, sunrise is at 9:38 am and sunset at 3:50 pm. On the last day of December, sunrise is at 10:04 am and sunset at 3:52 pm AKST.
Sunshine
The month with the least sunshine is December, with an average of 2h of sunshine.UV index
The months with the lowest UV index are January, February, April, October through December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A maximum UV index of 1 in December translates into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take careful note! The UV radiation of the Sun can be nearly doubled by 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 much does it rain in December?
When does it snow the most?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Whittier have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Whittier, AK
- Average high temperature in December: 22.8°F
The warmest month (with the highest average high temperature) is July (55°F).
The month with the lowest average high temperature is January (20.1°F).
- Average low temperature in December: 13.6°F
The month with the highest average low temperature is July (44.1°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in December
Whittier, AK
- Average pressure in December: 29.66"Hg
The month with the highest atmospheric pressure is July (29.98"Hg).
The month with the lowest atmospheric pressure is November (29.65"Hg).
Average wind speed in December
Whittier, AK
- Average wind speed in December: 6mph
The windiest month (with the highest average wind speed) is November (6.1mph).
The calmest month (with the lowest average wind speed) is July (4.1mph).
Average humidity in December
Whittier, AK
- Average humidity in December: 91%
The months with the highest relative humidity are March and April (92%).
The month with the lowest relative humidity is June (82%).
Average rainfall in December
Whittier, AK
- Average rainfall in December: 12.09"
The wettest month (with the highest rainfall) is October (12.13").
The driest month (with the least rainfall) is June (3.9").
Average rainfall days in December
Whittier, AK
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is February (7.7 days).
Average snowfall in December
Whittier, AK
- Average snowfall in December: 46.38"
The month with the highest snowfall is December (46.38").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Whittier, AK
- Average snowfall days in December: 21.9 days
The month with the highest number of snowfall days is December (21.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Whittier, AK
- Average daylight in December: 5h and 5min
The month with the longest days is June (Average daylight: 19h and 0min).
The month with the shortest days is December (Average daylight: 5h and 48min).
- Average sunshine in December: 2h
The month with the most sunshine is June (Average sunshine: 8h).
The month with the least sunshine is December (Average sunshine: 2h).
Average sunshine days in December
Whittier, AK
- Average sunshine days in December: 5.7 days
The month with the most sunshine days is January (9.3 days).
The month with the least sunshine days is April (5.6 days).
Average UV index in December
Whittier, AK
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 3).
The months with the lowest UV index are January, February, April, October, November and December (UV index 1).
Average cloud cover in December
Whittier, AK
- Average cloud cover in December: 71
The month with the most cloud cover is December (Cloud cover 71).
The months with the least cloud cover are March and June (Cloud cover 60).
Average visibility in December
Whittier, AK
- Average visibility in December: 4mi
The months with the highest visibility are May, June and July (5mi).
The months with the lowest visibility are January, February, March, April, August, September, October, November and December (4mi).
Whittier, Alaska, USA
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