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
Rowan Bay records a slight change with December's average high-temperatures adjusting to a wintry 40.6°F (4.8°C) from November's 44.2°F (6.8°C). Rowan Bay maintains a consistent average nighttime low-temperature of 37.2°F (2.9°C) throughout December.Humidity
In December, the average relative humidity is 80%.Rainfall
In December, the rain falls for 19.7 days. Throughout December, 7.76" (197mm) of precipitation is accumulated. In Rowan Bay, during the entire year, the rain falls for 223.5 days and collects up to 72.17" (1833mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Rowan Bay, in December, during 3.5 snowfall days, 1.61" (41mm) of snow is typically accumulated. In Rowan Bay, during the entire year, snow falls for 27.6 days and aggregates up to 16.02" (407mm) of snow.Daylight
The month with the shortest days is December, with an average of 6h and 54min of daylight.On the first day of the month, sunrise is at 8:09 am and sunset at 3:23 pm. On the last day of December, sunrise is at 8:32 am and sunset at 3:28 pm AKST.
Sunshine
The average sunshine in December is 3.2h.UV index
The months with the lowest UV index in Rowan Bay are January through April, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 2 in December transforms into this advice:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in December?
What is the average humidity in December?
How much does it rain in December?
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?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Rowan Bay, AK
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is August (57.6°F).
The month with the lowest average high temperature is February (39.6°F).
- Average low temperature in December: 37.2°F
The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is February (35.4°F).
Average pressure in December
Rowan Bay, AK
- Average pressure in December: 29.8"Hg
The month with the highest atmospheric pressure is July (30.05"Hg).
The month with the lowest atmospheric pressure is November (29.72"Hg).
Average wind speed in December
Rowan Bay, AK
- Average wind speed in December: 15.9mph
The windiest month (with the highest average wind speed) is January (17mph).
The calmest months (with the lowest average wind speed) are June and July (8.9mph).
Average humidity in December
Rowan Bay, AK
- Average humidity in December: 80%
The month with the highest relative humidity is August (89%).
The months with the lowest relative humidity are February and March (78%).
Average rainfall in December
Rowan Bay, AK
- Average rainfall in December: 7.76"
The wettest month (with the highest rainfall) is November (9.69").
The driest month (with the least rainfall) is May (3.07").
Average rainfall days in December
Rowan Bay, AK
- Average rainfall days in December: 19.7 days
The month with the highest number of rainy days is November (23.1 days).
The month with the least rainy days is February (14.2 days).
Average snowfall in December
Rowan Bay, AK
- Average snowfall in December: 1.61"
The month with the highest snowfall is February (4.88").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Rowan Bay, AK
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is March (8.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Rowan Bay, AK
- Average daylight in December: 6h and 5min
The month with the longest days is June (Average daylight: 17h and 42min).
The month with the shortest days is December (Average daylight: 6h and 54min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is May (Average sunshine: 7h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in December
Rowan Bay, AK
- Average sunshine days in December: 7.5 days
The month with the most sunshine days is May (13.6 days).
The month with the least sunshine days is November (5.3 days).
Average UV index in December
Rowan Bay, AK
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in December
Rowan Bay, AK
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 71).
The months with the least cloud cover are May and September (Cloud cover 55).
Average visibility in December
Rowan Bay, AK
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Rowan Bay, Alaska, USA
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