December weather forecastAtlanta, MO

December

Weather in December

The first month of the winter, December, is also a wintry month in Atlanta, Missouri, with temperature in the range of an average high of 38.5°F (3.6°C) and an average low of 26.1°F (-3.3°C).

Temperature

The average high-temperature decreases in December, shifting from a fresh 50.4°F (10.2°C) in November to a cold 38.5°F (3.6°C). Atlanta experiences an average low-temperature of 26.1°F (-3.3°C) in month of December.

Humidity

In Atlanta, the average relative humidity in December is 78%.

Rainfall

In Atlanta, in December, it is raining for 6.2 days, with typically 1.3" (33mm) of accumulated precipitation. In Atlanta, Missouri, during the entire year, the rain falls for 134.7 days and collects up to 26.38" (670mm) of precipitation.

Snowfall

Months with snowfall in Atlanta are January through April, October through December. In December, in Atlanta, Missouri, it is snowing for 4 days. Throughout December, 1.57" (40mm) of snow is accumulated. In Atlanta, during the entire year, snow falls for 21.8 days and aggregates up to 11.14" (283mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:12 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 4:55 pm CST.

Sunshine

In December, the average sunshine in Atlanta is 4.8h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 2 during December leads to these instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. When the Sun is at its strongest around midday, find shade and limit exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature in Atlanta during December is 38.5°F (3.6°C) and the low-temperature is 26.1°F (-3.3°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 91.4°F (33°C).

In December, the average relative humidity in Atlanta, Missouri, is 78%.

In Atlanta, Missouri, in December, it is raining for 6.2 days, with typically 1.3" (33mm) of accumulated precipitation.

In Atlanta, Missouri, in December, during 4 snowfall days, 1.57" (40mm) of snow is typically accumulated.

With an average of 9h and 24min of daylight, December has the shortest days of the year.

In Atlanta, the average day length in December is 9h and 24min.

In December, on the first day of the month, sunrise is at 7:12 am and sunset at 4:45 pm. On the last day of the month, in Atlanta, Missouri, sunrise is at 7:31 am and sunset at 4:55 pm CST.

In December, the average sunshine duration in Atlanta, Missouri, is 4.8h.

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

In Atlanta, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Atlanta, MO

  • Average high temperature in December: 38.5°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (33.3°F).

  • Average low temperature in December: 26.1°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

Average pressure in December
Atlanta, MO

  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in December
Atlanta, MO

  • Average wind speed in December: 9.9mph

The windiest month (with the highest average wind speed) is February (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in December
Atlanta, MO

  • Average humidity in December: 78%

The months with the highest relative humidity are May and June (81%).
The month with the lowest relative humidity is October (72%).

Average rainfall in December
Atlanta, MO

  • Average rainfall in December: 1.3"

The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is January (1.1").

Average rainfall days in December
Atlanta, MO

  • Average rainfall days in December: 6.2 days

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (5.3 days).

Average snowfall in December
Atlanta, MO

  • Average snowfall in December: 1.57"

The month with the highest snowfall is January (3.86").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Atlanta, MO

  • Average snowfall days in December: 4 days

The month with the highest number of snowfall days is January (6.7 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
Atlanta, MO

  • Average daylight in December: 9h and 24min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 4h and 48min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

Average sunshine days in December
Atlanta, MO

  • Average sunshine days in December: 21.3 days

The month with the most sunshine days is December (21.3 days).
The month with the least sunshine days is May (11.8 days).

Average UV index in December
Atlanta, MO

  • Average UV index in December: 2

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

Average cloud cover in December
Atlanta, MO

  • Average cloud cover in December: 47

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in December
Atlanta, MO

  • Average visibility in December: 6mi

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