December weather forecastBirchwood, AK
December
Weather in December
December, the first month of the winter in Birchwood, is also a subzero cold month, with an average temperature ranging between min 12.6°F (-10.8°C) and max 21.6°F (-5.8°C).Temperature
The arrival of December brings an average high-temperature of a still subzero cold 21.6°F (-5.8°C), closely following the temperature pattern of November. Birchwood reports an average nighttime low-temperature of 12.6°F (-10.8°C) in December.Humidity
The average relative humidity in December in Birchwood is 86%.Rainfall
In December, the rain falls for 10.2 days. Throughout December, 1.26" (32mm) of precipitation is accumulated. Throughout the year, there are 147 rainfall days, and 13.27" (337mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. December is the month with the most snowfall. Snow falls for 10.9 days and accumulates 5.98" (152mm) of snow.Daylight
December has the shortest days of the year, with an average of 5h and 36min of daylight.On the first day of December, sunrise is at 9:46 am and sunset at 3:48 pm. On the last day of the month, sunrise is at 10:12 am and sunset at 3:49 pm AKST.
Sunshine
With an average of 3.9h of sunshine, December has the least sunshine of the year.UV index
The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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
Average temperature in December
Birchwood, AK
- Average high temperature in December: 21.6°F
The warmest month (with the highest average high temperature) is July (63.1°F).
The month with the lowest average high temperature is January (19°F).
- Average low temperature in December: 12.6°F
The month with the highest average low temperature is July (48.4°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in December
Birchwood, AK
- Average pressure in December: 29.69"Hg
The month with the highest atmospheric pressure is July (29.96"Hg).
The months with the lowest atmospheric pressure are November and December (29.69"Hg).
Average wind speed in December
Birchwood, AK
- Average wind speed in December: 4.6mph
The windiest months (with the highest average wind speed) are January and December (4.6mph).
The calmest month (with the lowest average wind speed) is July (4.1mph).
Average humidity in December
Birchwood, AK
- Average humidity in December: 86%
The months with the highest relative humidity are February and March (87%).
The month with the lowest relative humidity is May (65%).
Average rainfall in December
Birchwood, AK
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is September (1.81").
The driest month (with the least rainfall) is May (0.63").
Average rainfall days in December
Birchwood, AK
- Average rainfall days in December: 10.2 days
The month with the highest number of rainy days is August (18.3 days).
The month with the least rainy days is January (7.4 days).
Average snowfall in December
Birchwood, AK
- Average snowfall in December: 5.98"
The month with the highest snowfall is December (5.98").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Birchwood, AK
- Average snowfall days in December: 10.9 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Birchwood, AK
- Average daylight in December: 5h and 36min
The month with the longest days is June (Average daylight: 19h and 18min).
The month with the shortest days is December (Average daylight: 5h and 36min).
- Average sunshine in December: 3h and 54min
The month with the most sunshine is May (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in December
Birchwood, AK
- Average sunshine days in December: 15.1 days
The month with the most sunshine days is January (17.2 days).
The month with the least sunshine days is August (10.2 days).
Average UV index in December
Birchwood, AK
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 4).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Birchwood, AK
- Average cloud cover in December: 44
The months with the most cloud cover are April, August and December (Cloud cover 44).
The month with the least cloud cover is May (Cloud cover 37).
Average visibility in December
Birchwood, AK
- Average visibility in December: 5mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is March (4mi).
