December weather forecast
Kansas City, MO

Share
Panorama of Kansas City, Missouri in the US, with an old statue of a scout boy looking towards the city
Panorama of Kansas City, Missouri in the US, with an old statue of a scout boy looking towards the city

Weather in December

As the year concludes, December in Kansas City brings back the full force of winter. The temperature plunges to an average low of 25.6°F (-3.6°C), and the city is often veiled under a thick layer of snow. With the least amount of sunshine, shorter days, and freezing nights, Kansas City immerses itself in a classic winter experience. As snowflakes pattern the cityscape, the city glows under the festive lights, offering the final magic touch to the year.

Temperature

The commencement of December involves a temperature shift, with the average high-temperature dropping from a fresh 54.1°F (12.3°C) in November to a cold 41.7°F (5.4°C). Kansas City's temperature drops to an average low of 25.5°F (-3.6°C) during the nights of December.

Humidity

With an average relative humidity of 71%, December is the most humid month.

Rainfall

In December, in Kansas City, Missouri, the rain falls for 5.4 days. Throughout December, 1.77" (45mm) of precipitation is accumulated. Throughout the year, there are 90.8 rainfall days, and 39.06" (992mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. The month with the most snowfall in Kansas City is December, when snow falls for 2.5 days and typically aggregates up to 4.41" (112mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 7:19 am and sunset at 4:56 pm. On the last day of December, sunrise is at 7:37 am and sunset at 5:05 pm CST.

Sunshine

The month with the least sunshine is December, with an average of 4.7h of sunshine.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In December, the maximum UV index of 2 transforms into these recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Kansas City in December?

Kansas City in December has an average high-temperature of 41.7°F (5.4°C) and an average low-temperature of 25.5°F (-3.6°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 102.2°F (39°C).

What is the most humid month in Kansas City?

The most humid month in Kansas City, Missouri, is December, with an average relative humidity of 71%.

What is the average humidity in December in Kansas City?

The average relative humidity in December in Kansas City is 71%.

How much does it rain in Kansas City in December?

In Kansas City, Missouri, during December, the rain falls for 5.4 days and regularly aggregates up to 1.77" (45mm) of precipitation.

What is the snowiest month in Kansas City?

December is the month with the most snowfall in Kansas City, Missouri. Snow falls for 2.5 days and accumulates 4.41" (112mm) of snow.

How much does it snow in Kansas City in December?

In Kansas City, Missouri, during December, snow falls for 2.5 days and regularly aggregates up to 4.41" (112mm) of snow.

What is the month with the shortest days in Kansas City?

With an average of 9h and 30min of daylight, December has the shortest days of the year in Kansas City.

What is the average length of the day in December in Kansas City?

The average day length in December in Kansas City is 9h and 29min.

What time are sunrise and sunset in December in Kansas City?

In December, on the first day of the month, sunrise is at 7:19 am and sunset at 4:56 pm. On the last day of the month, in Kansas City, Missouri, sunrise is at 7:37 am and sunset at 5:05 pm CST.

What is the month with the least sunshine in Kansas City?

With an average of 4.7h of sunshine, December has the least sunshine of the year in Kansas City.

How many hours of sunshine does Kansas City have in December?

In Kansas City, the average sunshine duration in December is 4.7h.

When is the lowest UV index in Kansas City?

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Kansas City.

What is the UV index reading in December in Kansas City?

In Kansas City, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average UV index

Average temperature in December
Kansas City, MO

Average temperature in December - Kansas City, MO
  • Average high temperature in December: 41.8°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (39.5°F).

  • Average low temperature in December: 25.6°F

The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (22.4°F).

Average humidity in December
Kansas City, MO

Average humidity in December - Kansas City, MO
  • Average humidity in December: 71%

The month with the highest relative humidity is December (71%).
The month with the lowest relative humidity is April (62.9%).

Average rainfall in December
Kansas City, MO

Average rainfall in December - Kansas City, MO
  • Average rainfall in December: 1.8"

The wettest month (with the highest rainfall) is June (5.5").
The driest month (with the least rainfall) is January (1.1").

Average rainfall days in December
Kansas City, MO

Average rainfall days in December - Kansas City, MO
  • Average rainfall days in December: 5.4 days

The month with the highest number of rainy days is May (11 days).
The month with the least rainy days is January (4.8 days).

Average snowfall in December
Kansas City, MO

Average snowfall in December - Kansas City, MO
  • Average snowfall in December: 4.4"

The month with the highest snowfall is December (4.4").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Kansas City, MO

Average snowfall days in December - Kansas City, MO
  • Average snowfall days in December: 2.5 days

The months with the highest number of snowfall days are January and December (2.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Kansas City, MO

Average daylight in December / Average sunshine in December - Kansas City, MO
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).

Average UV index in December
Kansas City, MO

Average UV index in December - Kansas City, MO
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 10).
The months with the lowest UV index are January and December (UV index 2).

Kansas City, Missouri, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location