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
December's average high-temperature is a subzero cold 31.5°F (-0.3°C), maintaining a close comparison with November's 34.5°F (1.4°C). A modest decline from daytime high temperatures is noticed in December, marking the average low at a still freezing cold 26.2°F (-3.2°C).Humidity
The average relative humidity in December is 81%.Rainfall
In December, the rain falls for 14.5 days. Throughout December, 8.98" (228mm) of precipitation is accumulated. In Orca, during the entire year, the rain falls for 191.3 days and collects up to 72.4" (1839mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. December is the month with the most snowfall. Snow falls for 12.9 days and accumulates 17.76" (451mm) of snow.Daylight
The month with the shortest days is December, with an average of 5h and 54min of daylight.On the first day of December, sunrise is at 9:24 am and sunset at 3:39 pm. On the last day of the month, sunrise is at 9:50 am and sunset at 3:42 pm AKST.
Sunshine
With an average of 2.1h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Orca are November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the average maximum UV index of 1 translates into the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
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 in Orca?
How much does it rain in Orca in December?
What is the snowiest month?
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 is the sunrise / sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Orca have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Orca, AK
- Average high temperature in December: 31.5°F
The warmest month (with the highest average high temperature) is July (58.6°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in December: 26.2°F
The month with the highest average low temperature is August (50°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in December
Orca, AK
- Average pressure in December: 29.68"Hg
The month with the highest atmospheric pressure is July (30"Hg).
The month with the lowest atmospheric pressure is November (29.65"Hg).
Average wind speed in December
Orca, AK
- Average wind speed in December: 12mph
The windiest months (with the highest average wind speed) are January and November (12.1mph).
The calmest month (with the lowest average wind speed) is June (5.2mph).
Average humidity in December
Orca, AK
- Average humidity in December: 81%
The month with the highest relative humidity is August (84%).
The month with the lowest relative humidity is November (75%).
Average rainfall in December
Orca, AK
- Average rainfall in December: 8.98"
The wettest month (with the highest rainfall) is October (9.09").
The driest month (with the least rainfall) is June (2.72").
Average rainfall days in December
Orca, AK
- Average rainfall days in December: 14.5 days
The month with the highest number of rainy days is August (21 days).
The month with the least rainy days is February (9.6 days).
Average snowfall in December
Orca, AK
- Average snowfall in December: 17.76"
The month with the highest snowfall is December (17.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Orca, AK
- Average snowfall days in December: 12.9 days
The month with the highest number of snowfall days is December (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Orca, AK
- Average daylight in December: 5h and 5min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in December: 2h and 1min
The months with the most sunshine are May, June and July (Average sunshine: 7h and 36min).
The month with the least sunshine is December (Average sunshine: 2h and 6min).
Average sunshine days in December
Orca, AK
- Average sunshine days in December: 9.3 days
The month with the most sunshine days is July (12.1 days).
The month with the least sunshine days is September (8 days).
Average UV index in December
Orca, AK
- Average UV index in December: 1
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in December
Orca, AK
- Average cloud cover in December: 68
The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is May (Cloud cover 57).
Average visibility in December
Orca, AK
- Average visibility in December: 5mi
The months with the highest visibility are February, March, April, May, June, July, September, October and November (6mi).
The months with the lowest visibility are January, August and December (5mi).
Orca, Alaska, USA
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