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 shift from November to December corresponds with a decrease in the average high-temperature, down to an icy 36.5°F (2.5°C) from a cool 50°F (10°C). Willow Island experiences an average temperature drop to a subzero cold 22.3°F (-5.4°C) during December nights.Humidity
In Willow Island, the average relative humidity in December is 70%.Rainfall
In December, the rain falls for 3.5 days. Throughout December, 0.83" (21mm) of precipitation is accumulated. Throughout the year, in Willow Island, there are 109.4 rainfall days, and 17.28" (439mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Willow Island, in December, during 6.5 snowfall days, 2.6" (66mm) of snow is typically accumulated. In Willow Island, Nebraska, during the entire year, snow falls for 29.8 days and aggregates up to 13.15" (334mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:46 am and sunset at 5:13 pm. On the last day of December, in Willow Island, sunrise is at 8:04 am and sunset at 5:22 pm CST.
Sunshine
In Willow Island, Nebraska, the average sunshine in December is 6.2h.UV index
The months with the lowest UV index in Willow Island, Nebraska, are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: In December, an average UV index of 2 transforms into the following instructions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Frequently asked questions
How cold is it in Willow Island in December?
What is the average humidity in December in Willow Island?
How many days does it rain in December in Willow Island?
How many days does it snow in December in Willow Island?
What is the month with the shortest days in Willow Island?
What is the average length of the day in December in Willow Island?
When are sunrise and sunset in December in Willow Island?
How long on average sun shines in December in Willow Island?
What is the month with the lowest UV index in Willow Island?
How high is the UV index in December in Willow Island?
Average temperature in December
Willow Island, NE
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in December: 22.3°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in December
Willow Island, NE
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Willow Island, NE
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is April (12.3mph).
The calmest month (with the lowest average wind speed) is July (9.2mph).
Average humidity in December
Willow Island, NE
- Average humidity in December: 70%
The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is October (58%).
Average rainfall in December
Willow Island, NE
- Average rainfall in December: 0.83"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in December
Willow Island, NE
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Willow Island, NE
- Average snowfall in December: 2.6"
The month with the highest snowfall is February (2.95").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Willow Island, NE
- Average snowfall days in December: 6.5 days
The months with the highest number of snowfall days are February and December (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Willow Island, NE
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 6h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).
Average sunshine days in December
Willow Island, NE
- Average sunshine days in December: 22.7 days
The month with the most sunshine days is November (22.9 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in December
Willow Island, NE
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Willow Island, NE
- Average cloud cover in December: 34
The month with the most cloud cover is February (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 22).
Average visibility in December
Willow Island, NE
- 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).
Willow Island, Nebraska, USA
Weather forecast for your location
2. Allow the app to use your location
