December weather forecast and climate
Willis, KS

December, the first month of the winter, in Willis, is still a cold month, with average temperature ranging between max 38.5°F (3.6°C) and min 25.5°F (-3.6°C).

Temperature

In December, the average high-temperature decreases, from a cool 51.4°F (10.8°C) in November, to a cold 38.5°F (3.6°C). In December, in Willis, the average low-temperature is 25.5°F (-3.6°C).

Humidity

In Willis, the average relative humidity is 74%.

Rainfall

In Willis, during December, the rain falls for 5.1 days and regularly aggregates up to 1.06" (27mm) of precipitation. In Willis, during the entire year, the rain falls for 123.6 days and collects up to 25.47" (647mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Willis, Kansas, snow falls for 4 days, with typically accumulated 1.3" (33mm) of snow. Throughout the year, there are 22.1 snowfall days, and 8.62" (219mm) of snow is accumulated.

Daylight

With an average of 9.4h of daylight, December has the shortest days of the year.

Sunshine

In Willis, the average sunshine in December is 5.5h.

UV index

Months with the lowest UV index in Willis are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Willis?

In Willis, Kansas, in December, the average high-temperature is 38.5°F (3.6°C), and the average low-temperature is 25.5°F (-3.6°C).

What is the average humidity in December in Willis?

The average relative humidity in December is 74%.

How much does it rain in Willis in December?

In December, in Willis, the rain falls for 5.1 days. Throughout December, 1.06" (27mm) of precipitation is accumulated.

How many days does it snow in December in Willis?

In Willis, Kansas, in December, during 4 snowfall days, 1.3" (33mm) of snow is typically accumulated.

What is the month with the shortest days in Willis?

The month with the shortest days in Willis is December, with an average of 9.4h of daylight.

How many hours of daylight does Willis have in December?

In December, the average length of the day in Willis is 9.4h.

How long on average sun shines in December in Willis?

In December, the average sunshine in Willis, Kansas, is 5.5h.

What are the months with the lowest UV index in Willis?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Willis.

How high is the UV index in December in Willis?

In Willis, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to the Sun's UV rays.
Average temperature in December - Willis, KS
  • Average high temperature in December: 38.5°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in December: 25.5°F

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

Average pressure in December - Willis, KS
  • Average pressure in December: 30.13"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.87").

Average wind speed in December - Willis, KS
  • Average wind speed in December: 9.6mph

The windiest months (with the highest average wind speed) are March and April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).

Average humidity in December - Willis, KS
  • Average humidity in December: 74%

The month with the highest relative humidity is June (77%).
The month with the lowest relative humidity is October (67%).

Average rainfall in December - Willis, KS
  • Average rainfall in December: 1.06"

The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is February (0.71").

Average rainfall days in December - Willis, KS
  • Average rainfall days in December: 5.1 days

The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is January (4.2 days).

Average snowfall in December - Willis, KS
  • Average snowfall in December: 1.3"

The month with the highest snowfall is January (2.56").
Months with the least snowfall are June, July, August and September (0").

Average snowfall days in December - Willis, KS
  • Average snowfall days in December: 4 days

The month with the highest number of snowfall days is January (6.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Willis, KS
  • Average daylight in December: 9.4h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in December: 5.5h

Months with the most sunshine are June and July (Average sunshine: 10.4h).
The month with the least sunshine is January (Average sunshine: 5.2h).

Average sunshine days in December - Willis, KS
  • Average sunshine days in December: 21.5 days

The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is May (12.8 days).

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

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December - Willis, KS
  • Average cloud cover in December: 41

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 26).

Average visibility in December - Willis, KS
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).