December weather forecast and climate
Jefferson City, MO

The State Capitol building surrounded by a beautiful park in Jefferson City, Missouri
The State Capitol building surrounded by a beautiful park in Jefferson City, Missouri

Weather in December

December, the first month of the winter, in Jefferson City, is still a chilly month, with average temperature fluctuating between 42.8°F (6°C) and 29.1°F (-1.6°C).

Temperature

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

Humidity

The average relative humidity in December is 76%.

Rainfall

In December, the rain falls for 4.6 days. Throughout December, 0.51" (13mm) of precipitation is accumulated. Throughout the year, there are 93.7 rainfall days, and 9.29" (236mm) of precipitation is accumulated.

Snowfall

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

Daylight

The month with the shortest days in Jefferson City, Missouri, is December, with an average of 9.5h of daylight.

Sunshine

The average sunshine in Jefferson City 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. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Jefferson City?

In December, in Jefferson City, 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?

The average relative humidity in December in Jefferson City is 76%.

How much does it rain in Jefferson City in December?

In Jefferson City, during December, the rain falls for 4.6 days and regularly aggregates up to 0.51" (13mm) of precipitation.

How much does it snow in Jefferson City in December?

In Jefferson City, in December, snow falls for 2.8 days, with typically accumulated 0.43" (11mm) of snow.

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

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

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

In December, the average length of the day is 9.5h.

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

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

What is the month 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.

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

In Jefferson City, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV rays.

Average temperature in December
Jefferson City, MO

Average temperature in December - Jefferson City, MO
  • Average high temperature in December: 42.8°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (38.5°F).

  • Average low temperature in December: 29.1°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in December
Jefferson City, MO

Average pressure in December - Jefferson City, MO
  • 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 (29.92").

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Average wind speed in December
Jefferson City, MO

Average wind speed in December - Jefferson City, MO
  • Average wind speed in December: 8.5mph

The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

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Average humidity in December
Jefferson City, MO

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%).

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Average rainfall in December
Jefferson City, MO

Average rainfall in December - Jefferson City, MO
  • Average rainfall in December: 0.51"

The wettest month (with the highest rainfall) is May (1.3").
The driest month (with the least rainfall) is November (0.47").

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Average rainfall days in December
Jefferson City, MO

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 least rainy days is January (4 days).

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Average snowfall in December
Jefferson City, MO

Average snowfall in December - Jefferson City, MO
  • Average snowfall in December: 0.43"

The month with the highest snowfall is January (0.71").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Jefferson City, MO

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 least snowfall days are May, June, July, August and September (0 days).

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

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 the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in December: 5.1h

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

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Average sunshine days in December
Jefferson City, MO

Average sunshine days in December - Jefferson City, MO
  • Average sunshine days in December: 23.7 days

The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is May (16.7 days).

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Average UV index in December
Jefferson City, MO

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).

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Average cloud cover in December
Jefferson City, MO

Average cloud cover in December - Jefferson City, MO
  • Average cloud cover in December: 46

The month with the most cloud cover is February (Cloud cover 49).
Months with the least cloud cover are June and August (Cloud cover 28).

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Average visibility in December
Jefferson City, MO

Average visibility in December - Jefferson City, MO
  • 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).

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