December weather forecastWillow, AK
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Willow, Alaska, with an average temperature fluctuating between 19.4°F (-7°C) and 11.5°F (-11.4°C).Temperature
With the start of December, Willow measures an average high-temperature of a still subzero cold 19.4°F (-7°C), not significantly differing from November's 24.4°F (-4.2°C). Willow's nights throughout December are marked by an average low temperature of 11.5°F (-11.4°C), a minor drop from the day's high.Humidity
In Willow, the average relative humidity in December is 86%.Rainfall
In Willow, during December, the rain falls for 7.3 days and regularly aggregates up to 0.98" (25mm) of precipitation. Throughout the year, there are 134.1 rainfall days, and 13.86" (352mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. December is the month with the most snowfall. Snow falls for 11.4 days and accumulates 5.87" (149mm) of snow.Daylight
The month with the shortest days is December, with an average of 5h and 24min of daylight.On the first day of the month, sunrise is at 9:52 am and sunset at 3:45 pm. On the last day of December, sunrise is at 10:19 am and sunset at 3:46 pm AKST.
Sunshine
The month with the least sunshine is December, with an average of 3.7h of sunshine.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: In December, the maximum UV index of 1 transforms into these recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Willow, AK
- Average high temperature in December: 19.4°F
The warmest month (with the highest average high temperature) is July (67.6°F).
The month with the lowest average high temperature is January (17.8°F).
- Average low temperature in December: 11.5°F
The month with the highest average low temperature is July (50.4°F).
The coldest month (with the lowest average low temperature) is January (8.6°F).
Average pressure in December
Willow, AK
- Average pressure in December: 29.7"Hg
The month with the highest atmospheric pressure is July (29.96"Hg).
The months with the lowest atmospheric pressure are November and December (29.7"Hg).
Average wind speed in December
Willow, AK
- Average wind speed in December: 4.9mph
The windiest month (with the highest average wind speed) is November (5.1mph).
The calmest month (with the lowest average wind speed) is April (4.3mph).
Average humidity in December
Willow, AK
- Average humidity in December: 86%
The month with the highest relative humidity is March (89%).
The month with the lowest relative humidity is May (61%).
Average rainfall in December
Willow, AK
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is September (2.13").
The driest month (with the least rainfall) is April (0.63").
Average rainfall days in December
Willow, AK
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is August (19.3 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in December
Willow, AK
- Average snowfall in December: 5.87"
The month with the highest snowfall is December (5.87").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Willow, AK
- Average snowfall days in December: 11.4 days
The month with the highest number of snowfall days is December (11.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Willow, AK
- Average daylight in December: 5h and 24min
The month with the longest days is June (Average daylight: 19h and 30min).
The month with the shortest days is December (Average daylight: 5h and 24min).
- Average sunshine in December: 3h and 42min
The month with the most sunshine is May (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in December
Willow, AK
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is August (9.7 days).
Average UV index in December
Willow, AK
- Average UV index in December: 1
The months with the highest UV index are May, June and July (UV index 4).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Willow, AK
- Average cloud cover in December: 47
The months with the most cloud cover are April and August (Cloud cover 48).
The month with the least cloud cover is January (Cloud cover 40).
Average visibility in December
Willow, 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).
