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
As Gustavus steps into December, the average high-temperature holds at a freezing cold 31.8°F (-0.1°C), hinting at a minor fluctuation from the prior month. Gustavus's nighttime average temperature in December drops marginally from the daytime highs, settling at a still subzero cold 27.3°F (-2.6°C).Humidity
In December, the average relative humidity is 87%.Rainfall
In Gustavus, in December, during 12.8 rainfall days, 3.58" (91mm) of precipitation is typically accumulated. In Gustavus, during the entire year, the rain falls for 182.7 days and collects up to 37.4" (950mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Gustavus. In Gustavus, in December, snow falls for 11.9 days, with typically accumulated 11.18" (284mm) of snow. In Gustavus, during the entire year, snow falls for 60.8 days and aggregates up to 53.78" (1366mm) of snow.Daylight
With an average of 6h and 30min of daylight, December has the shortest days of the year in Gustavus.On the first day of the month, sunrise is at 8:27 am and sunset at 3:17 pm. On the last day of December, sunrise is at 8:51 am and sunset at 3:21 pm AKST.
Sunshine
The months with the least sunshine are January and December, with an average of 2.9h of sunshine.UV index
November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 1 translates into these guidelines:
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. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December in Gustavus?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Gustavus have in December?
What time are sunrise and sunset in December?
What are the months with the least sunshine in Gustavus?
How many hours of sunshine does Gustavus have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Gustavus, AK
- Average high temperature in December: 31.8°F
The warmest month (with the highest average high temperature) is July (57.2°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in December: 27.3°F
The month with the highest average low temperature is July (49.5°F).
The coldest month (with the lowest average low temperature) is February (25.9°F).
Average pressure in December
Gustavus, AK
- Average pressure in December: 29.83"Hg
The month with the highest atmospheric pressure is July (30.03"Hg).
The month with the lowest atmospheric pressure is November (29.77"Hg).
Average wind speed in December
Gustavus, AK
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is January (7mph).
The calmest months (with the lowest average wind speed) are June and July (3.7mph).
Average humidity in December
Gustavus, AK
- Average humidity in December: 87%
The month with the highest relative humidity is August (90%).
The month with the lowest relative humidity is November (84%).
Average rainfall in December
Gustavus, AK
- Average rainfall in December: 3.58"
The wettest months (with the highest rainfall) are October and November (4.21").
The driest month (with the least rainfall) is May (1.61").
Average rainfall days in December
Gustavus, AK
- Average rainfall days in December: 12.8 days
The month with the highest number of rainy days is June (18.9 days).
The month with the least rainy days is February (8.2 days).
Average snowfall in December
Gustavus, AK
- Average snowfall in December: 11.18"
The month with the highest snowfall is January (11.22").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Gustavus, AK
- Average snowfall days in December: 11.9 days
The month with the highest number of snowfall days is March (13.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Gustavus, AK
- Average daylight in December: 6h and 3min
The month with the longest days is June (Average daylight: 18h and 12min).
The month with the shortest days is December (Average daylight: 6h and 30min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is June (Average sunshine: 7h and 42min).
The months with the least sunshine are January and December (Average sunshine: 2h and 54min).
Average sunshine days in December
Gustavus, AK
- Average sunshine days in December: 10.5 days
The months with the most sunshine days are February and May (12.5 days).
The month with the least sunshine days is June (7.7 days).
Average UV index in December
Gustavus, 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
Gustavus, AK
- Average cloud cover in December: 70
The month with the most cloud cover is November (Cloud cover 71).
The month with the least cloud cover is May (Cloud cover 56).
Average visibility in December
Gustavus, AK
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (5mi).
The months with the lowest visibility are July and August (4mi).
Gustavus, Alaska, USA
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