Jefferson City
Missouri, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Jefferson City, MO

The scenic view of the State Capitol building in Jefferson City, Missouri, surrounded by a beautiful park, reflected in a pool of water nearby
The scenic view of the State Capitol building in Jefferson City, Missouri, surrounded by a beautiful park, reflected in a pool of water nearby
The first month of the winter, December, is still a chilly month in Jefferson City, Missouri, with average temperature ranging between max 42.8°F (6°C) and min 29.1°F (-1.6°C).

Temperature

In December, the average high-temperature decreases, from a fresh 53.8°F (12.1°C) in November, to a frosty 42.8°F (6°C). In December, the average low-temperature is 29.1°F (-1.6°C).

Humidity

In December, the average relative humidity is 76%.

Rainfall

In December, in Jefferson City, the rain falls for 4.6 days. Throughout December, 0.51" (13mm) of precipitation is accumulated. In Jefferson City, during the entire year, the rain falls for 93.7 days and collects up to 9.29" (236mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall in Jefferson City. In Jefferson City, in December, during 2.8 snowfall days, 0.43" (11mm) of snow is typically accumulated. In Jefferson City, during the entire year, snow falls for 14.9 days, and aggregates up to 2.13" (54mm) of snow.

Daylight

With an average of 9.5h of daylight, December has the shortest days of the year in Jefferson City.

Sunshine

In December, the average sunshine in Jefferson City, Missouri, is 5.1h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Jefferson City. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. 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 Jefferson City?

In December, the average high-temperature is 42.8°F (6°C), and the average low-temperature is 29.1°F (-1.6°C).

What is the average humidity in December in Jefferson City?

In December, the average relative humidity in Jefferson City, Missouri, is 76%.

How many days does it rain in December in Jefferson City?

In Jefferson City, Missouri, in December, during 4.6 rainfall days, 0.51" (13mm) of precipitation is typically accumulated.

How many days does it snow in December in Jefferson City?

In Jefferson City, Missouri, during December, snow falls for 2.8 days and regularly aggregates up to 0.43" (11mm) of snow.

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

With an average of 9.5h of daylight, December has the shortest days of the year in Jefferson City.

How many hours of daylight does Jefferson City have in December?

The average length of the day in December in Jefferson City is 9.5h.

How long on average sun shines in December in Jefferson City?

In Jefferson City, the average sunshine in December is 5.1h.

What are the months with the lowest UV index in Jefferson City?

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

What is the UV index intensity in December in Jefferson City?

The average daily maximum UV index in December in Jefferson City is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from unprotected exposure to the UV radiation.
Average temperature in December - Jefferson City, MO
  • Average high temperature in December: 6°C

The warmest month (with the highest average high temperature) is July (31.8°C).
The month with the lowest average high temperature is January (3.6°C).

  • Average low temperature in December: -1.6°C

The month with the highest average low temperature is July (19.9°C).
The coldest month (with the lowest average low temperature) is January (-4.3°C).

Average humidity in December - Jefferson City, MO
  • Average humidity in December: 76%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is October (72%).

Average rainfall in December - Jefferson City, MO
  • Average rainfall in December: 13mm

The wettest month (with the highest rainfall) is May (33mm).
The driest month (with the lowest rainfall) is November (12mm).

Average rainfall days in December - Jefferson City, MO
  • Average rainfall days in December: 4.6 days

The month with the highest number of rainy days is May (11.3 days).
The month with the lowest number of rainy days is January (4 days).

Average snowfall in December - Jefferson City, MO
  • Average snowfall in December: 11mm

The month with the highest snowfall is January (18mm).
Months with the lowest snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in December - Jefferson City, MO
  • Average snowfall days in December: 2.8 days

The month with the highest number of snowfall days is January (5.2 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Jefferson City, MO
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in December: 5.1h

The month with most sunshine is June (Average sunshine: 10.6h).
The month with least sunshine is February (Average sunshine: 4.8h).

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

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