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
The transition from November to December sees an average high-temperature of a still cold 32.4°F (0.2°C), indicating a minor variance from the prior month. Port Heiden's nights throughout December are marked by an average low temperature of 27.5°F (-2.5°C), a minor drop from the day's high.Humidity
The average relative humidity in December is 85%.Rainfall
In Port Heiden, during December, the rain falls for 11.2 days and regularly aggregates up to 2.01" (51mm) of precipitation. In Port Heiden, Alaska, during the entire year, the rain falls for 160.7 days and collects up to 16.57" (421mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Port Heiden. December is the month with the most snowfall in Port Heiden. Snow falls for 15.1 days and accumulates 5.71" (145mm) of snow.Daylight
With an average of 6h and 54min of daylight, December has the shortest days of the year in Port Heiden.On the first day of the month, sunrise is at 9:48 am and sunset at 4:58 pm. On the last day of December, sunrise is at 10:11 am and sunset at 5:03 pm AKST.
Sunshine
With an average of 2.4h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Port Heiden are February, March, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: In December, the maximum UV index of 1 suggests this advice:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
How cold is December in Port Heiden?
What is the average humidity in December in Port Heiden?
How much does it rain in Port Heiden in December?
When does it snow the most in Port Heiden?
How many days does it snow in December in Port Heiden?
What is the month with the shortest days in Port Heiden?
What is the average length of the day in December in Port Heiden?
When are sunrise and sunset in December in Port Heiden?
What is the month with the least sunshine in Port Heiden?
How long on average sun shines in December in Port Heiden?
When is the lowest UV index in Port Heiden?
What is the UV index intensity in December in Port Heiden?
Average temperature in December
Port Heiden, AK
- Average high temperature in December: 32.4°F
The warmest month (with the highest average high temperature) is August (56.8°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is August (49.1°F).
The coldest months (with the lowest average low temperature) are January and March (23.4°F).
Average pressure in December
Port Heiden, AK
- Average pressure in December: 29.54"Hg
The month with the highest atmospheric pressure is July (29.97"Hg).
The month with the lowest atmospheric pressure is December (29.54"Hg).
Average wind speed in December
Port Heiden, AK
- Average wind speed in December: 14.8mph
The windiest month (with the highest average wind speed) is December (14.8mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).
Average humidity in December
Port Heiden, AK
- Average humidity in December: 85%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (78%).
Average rainfall in December
Port Heiden, AK
- Average rainfall in December: 2.01"
The wettest month (with the highest rainfall) is October (2.17").
The driest month (with the least rainfall) is June (0.83").
Average rainfall days in December
Port Heiden, AK
- Average rainfall days in December: 11.2 days
The month with the highest number of rainy days is September (19.2 days).
The month with the least rainy days is March (7.6 days).
Average snowfall in December
Port Heiden, AK
- Average snowfall in December: 5.71"
The month with the highest snowfall is December (5.71").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Port Heiden, AK
- Average snowfall days in December: 15.1 days
The month with the highest number of snowfall days is December (15.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Port Heiden, AK
- Average daylight in December: 6h and 5min
The month with the longest days is June (Average daylight: 17h and 48min).
The month with the shortest days is December (Average daylight: 6h and 54min).
- Average sunshine in December: 2h and 2min
The month with the most sunshine is May (Average sunshine: 7h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days in December
Port Heiden, AK
- Average sunshine days in December: 6.7 days
The month with the most sunshine days is May (13 days).
The month with the least sunshine days is November (6 days).
Average UV index in December
Port Heiden, AK
- Average UV index in December: 1
The months with the highest UV index are May, June, July, August and September (UV index 3).
The months with the lowest UV index are February, March, November and December (UV index 1).
Average cloud cover in December
Port Heiden, AK
- Average cloud cover in December: 67
The month with the most cloud cover is July (Cloud cover 69).
The month with the least cloud cover is May (Cloud cover 59).
Average visibility in December
Port Heiden, AK
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (5mi).
Port Heiden, Alaska, USA
Weather forecast for your location
2. Allow the app to use your location
