December weather forecast and climate
Rock, KS

December, the first month of the winter, in Rock, is also a frosty month, with average temperature fluctuating between 45.1°F (7.3°C) and 29.7°F (-1.3°C).

Temperature

In December, the average high-temperature drops, from a mild 56.3°F (13.5°C) in November, to a chilly 45.1°F (7.3°C). The average low-temperature, in December, is 29.7°F (-1.3°C).

Humidity

In December, the average relative humidity is 68%.

Rainfall

December is the month with the least rainfall in Rock. Rain falls for 4.5 days and accumulates 0.59" (15mm) of precipitation.

Snowfall

January through March, October through December are months with snowfall in Rock. In Rock, during 2.1 snowfall days, 0.59" (15mm) of snow is typically accumulated. In Rock, during the entire year, snow falls for 10.8 days, and aggregates up to 4.25" (108mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9.6h of daylight.

Sunshine

The average sunshine in Rock, Kansas, is 6.1h.

UV index

Months with the lowest UV index in Rock are January, February and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to the Sun's UV rays for the average person.
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 Rock?

In Rock, Kansas, in December, the average high-temperature is 45.1°F (7.3°C), and the average low-temperature is 29.7°F (-1.3°C).

What is the average humidity in December in Rock?

In December, the average relative humidity in Rock is 68%.

How many days does it rain in December in Rock?

In Rock, during December, the rain falls for 4.5 days and regularly aggregates up to 0.59" (15mm) of precipitation.

What is the driest month in Rock?

December is the month with the least rainfall in Rock. Rain falls for 4.5 days and accumulates 0.59" (15mm) of precipitation.

How much does it snow in Rock in December?

In Rock, during December, snow falls for 2.1 days and regularly aggregates up to 0.59" (15mm) of snow.

What is the month with the shortest days in Rock?

With an average of 9.6h of daylight, December has the shortest days of the year in Rock.

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

The average length of the day in December is 9.6h.

How many hours of sunshine does Rock have in December?

The average sunshine in December is 6.1h.

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

Months with the lowest UV index are January, February and December, with an average maximum UV index of 2.

What is the UV index reading in December in Rock?

In Rock, Kansas, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation.
Average temperature in December - Rock, KS
  • Average high temperature in December: 45.1°F

The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (43.7°F).

  • Average low temperature in December: 29.7°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).

Average pressure in December - Rock, 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 (29.86").

Average wind speed in December - Rock, KS
  • Average wind speed in December: 10.4mph

The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

Average humidity in December - Rock, KS
  • Average humidity in December: 68%

The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is October (65%).

Average rainfall in December - Rock, KS
  • Average rainfall in December: 0.59"

The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is December (0.59").

Average rainfall days in December - Rock, KS
  • Average rainfall days in December: 4.5 days

The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is January (3.8 days).

Average snowfall in December - Rock, KS
  • Average snowfall in December: 0.59"

The month with the highest snowfall is February (1.57").
Months with the least snowfall are April, May, June, July, August and September (0").

Average snowfall days in December - Rock, KS
  • Average snowfall days in December: 2.1 days

The month with the highest number of snowfall days is February (3.3 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Rock, KS
  • Average daylight in December: 9.6h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in December: 6.1h

The month with the most sunshine is August (Average sunshine: 11h).
The month with the least sunshine is January (Average sunshine: 6h).

Average sunshine days in December - Rock, KS
  • Average sunshine days in December: 24.2 days

Months with the most sunshine days are January and December (24.2 days).
The month with the least sunshine days is July (14.3 days).

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

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in December - Rock, KS
  • Average cloud cover in December: 31

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 21).

Average visibility in December - Rock, 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).