December weather forecast
Willis, NE

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Weather in December

The first month of the winter, December, is also a subzero cold month in Willis, Nebraska, with an average temperature fluctuating between 18.7°F (-7.4°C) and 30.7°F (-0.7°C).

Temperature

As November gives way to December, the average high-temperature displays a considerable decrease, falling from a chilly 45.9°F (7.7°C) to a subzero cold 30.7°F (-0.7°C). The nighttime temperature dips to 18.7°F (-7.4°C) on average during December.

Humidity

In Willis, the average relative humidity in December is 81%.

Rainfall

In Willis, in December, during 4.1 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, in Willis, Nebraska, there are 122 rainfall days, and 21.61" (549mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In December, in Willis, it is snowing for 8.4 days. Throughout December, 2.56" (65mm) of snow is accumulated. In Willis, during the entire year, snow falls for 38 days and aggregates up to 13.23" (336mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 6min of daylight.
On the first day of December, sunrise is at 7:37 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:55 am and sunset at 5:03 pm CST.

Sunshine

In Willis, the average sunshine in December is 4.8h.

UV index

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: An average maximum UV index of 2 in December leads to these recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Willis in December?

In Willis, in December, the average high-temperature is 30.7°F (-0.7°C), and the average low-temperature is 18.7°F (-7.4°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is computed to be 87.8°F (31°C).

What is the average humidity in December in Willis?

The average relative humidity in December is 81%.

How much does it rain in Willis in December?

In Willis, Nebraska, in December, it is raining for 4.1 days, with typically 1.22" (31mm) of accumulated precipitation.

How many days does it snow in December in Willis?

In Willis, Nebraska, during December, snow falls for 8.4 days and regularly aggregates up to 2.56" (65mm) of snow.

What is the month with the shortest days in Willis?

With an average of 9h and 6min of daylight, December has the shortest days of the year in Willis, Nebraska.

What is the average length of the day in December in Willis?

The average day length in December in Willis, Nebraska, is 9h and 8min.

When is the sunrise / sunset in December in Willis?

In December, on the first day of the month, sunrise is at 7:37 am and sunset at 4:54 pm. On the last day of the month, in Willis, Nebraska, sunrise is at 7:55 am and sunset at 5:03 pm CST.

How many hours of sunshine does Willis have in December?

In Willis, Nebraska, the average sunshine duration in December is 4.8h.

What is the UV index reading in December in Willis?

In December, the average daily maximum UV index in Willis is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Willis, NE

Average temperature in December - Willis, NE
  • Average high temperature in December: 30.7°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in December: 18.7°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).

Average pressure in December
Willis, NE

Average pressure in December - Willis, NE
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in December
Willis, NE

Average wind speed in December - Willis, NE
  • Average wind speed in December: 10.2mph

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).

Average humidity in December
Willis, NE

Average humidity in December - Willis, NE
  • Average humidity in December: 81%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (65%).

Average rainfall in December
Willis, NE

Average rainfall in December - Willis, NE
  • Average rainfall in December: 1.22"

The wettest months (with the highest rainfall) are May and June (3.03").
The driest month (with the least rainfall) is February (0.67").

Average rainfall days in December
Willis, NE

Average rainfall days in December - Willis, NE
  • Average rainfall days in December: 4.1 days

The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (3.3 days).

Average snowfall in December
Willis, NE

Average snowfall in December - Willis, NE
  • Average snowfall in December: 2.56"

The month with the highest snowfall is January (2.95").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Willis, NE

Average snowfall days in December - Willis, NE
  • Average snowfall days in December: 8.4 days

The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Willis, NE

Average daylight in December / Average sunshine in December - Willis, NE
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

Average sunshine days in December
Willis, NE

Average sunshine days in December - Willis, NE
  • Average sunshine days in December: 20.1 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is June (9.7 days).

Average UV index in December
Willis, NE

Average UV index in December - Willis, NE
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in December
Willis, NE

Average cloud cover in December - Willis, NE
  • Average cloud cover in December: 48

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 26).

Average visibility in December
Willis, NE

Average visibility in December - Willis, 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).

Willis, Nebraska, USA

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