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
With December's arrival, Sterling's weather records an average high-temperature of a still subzero cold 24.3°F (-4.3°C), marking little difference from November's 29.3°F (-1.5°C). In the month of December, Sterling experiences a minor discrepancy from peak daytime temperatures, settling at an average low-temperature of 16.9°F (-8.4°C).Humidity
In December, the average relative humidity is 89%.Rainfall
In Sterling, in December, during 7.7 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. In Sterling, during the entire year, the rain falls for 135.9 days and collects up to 12.4" (315mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In Sterling, in December, snow falls for 13.1 days, with typically accumulated 5.2" (132mm) of snow. In Sterling, during the entire year, snow falls for 65.1 days and aggregates up to 23.27" (591mm) of snow.Daylight
With an average of 5h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 9:44 am and sunset at 4:00 pm. On the last day of December, sunrise is at 10:10 am and sunset at 4:02 pm AKST.
Sunshine
December has the least sunshine of the year, with an average of 3.3h of sunshine.UV index
In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.Note: A daily high UV index of 2 in December leads to these guidelines:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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 Sterling?
How much 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 Sterling have in December?
When are sunrise and sunset in December in Sterling?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the UV index reading in December?
Average temperature in December
Sterling, AK
- Average high temperature in December: 24.3°F
The warmest month (with the highest average high temperature) is July (66.2°F).
The month with the lowest average high temperature is January (21.9°F).
- Average low temperature in December: 16.9°F
The month with the highest average low temperature is July (50°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in December
Sterling, AK
- Average pressure in December: 29.64"Hg
The month with the highest atmospheric pressure is July (29.96"Hg).
The months with the lowest atmospheric pressure are November and December (29.64"Hg).
Average wind speed in December
Sterling, AK
- Average wind speed in December: 6mph
The windiest months (with the highest average wind speed) are November and December (6mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).
Average humidity in December
Sterling, AK
- Average humidity in December: 89%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (64%).
Average rainfall in December
Sterling, AK
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is October (1.77").
The driest month (with the least rainfall) is May (0.55").
Average rainfall days in December
Sterling, AK
- Average rainfall days in December: 7.7 days
The month with the highest number of rainy days is September (17.3 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in December
Sterling, AK
- Average snowfall in December: 5.2"
The month with the highest snowfall is February (5.31").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Sterling, AK
- Average snowfall days in December: 13.1 days
The month with the highest number of snowfall days is December (13.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Sterling, 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: 3h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).
Average sunshine days in December
Sterling, AK
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is May (16.8 days).
The month with the least sunshine days is September (11 days).
Average UV index in December
Sterling, AK
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are February and November (UV index 1).
Average cloud cover in December
Sterling, AK
- Average cloud cover in December: 53
The month with the most cloud cover is December (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 45).
Average visibility in December
Sterling, AK
- Average visibility in December: 5mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and March (4mi).
Sterling, Alaska, USA
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