December weather forecast
Post Oak, MO

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Weather in December

December, the first month of the winter in Post Oak, is still a cold month, with temperature in the range of an average low of 28.6°F (-1.9°C) and an average high of 42.3°F (5.7°C).

Temperature

Post Oak's progression into December involves a drop in the average high-temperature, receding from a fresh 53.1°F (11.7°C) in November to an icy 42.3°F (5.7°C). During December, the temperature in Post Oak is averaged to a low of 28.6°F (-1.9°C) at night.

Humidity

In December, the average relative humidity is 75%.

Rainfall

In Post Oak, during December, the rain falls for 7.1 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, there are 130 rainfall days, and 21.81" (554mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall in Post Oak. In Post Oak, in December, snow falls for 3.7 days, with typically accumulated 1.18" (30mm) of snow. Throughout the year, there are 19.3 snowfall days, and 5.39" (137mm) of snow is accumulated.

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 7:14 am and sunset at 4:54 pm. On the last day of December, in Post Oak, Missouri, sunrise is at 7:32 am and sunset at 5:04 pm CST.

Sunshine

The average sunshine in December is 5.2h.

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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 2 in December converts into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold in Post Oak during December?

The average high-temperature and low-temperature in Post Oak during December are 42.3°F (5.7°C) and 28.6°F (-1.9°C) respectively. In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 95°F (35°C).

What is the average humidity in December in Post Oak?

In December, the average relative humidity is 75%.

How much does it rain in Post Oak in December?

In Post Oak, Missouri, during December, the rain falls for 7.1 days and regularly aggregates up to 1.14" (29mm) of precipitation.

How much does it snow in Post Oak in December?

In Post Oak, Missouri, in December, during 3.7 snowfall days, 1.18" (30mm) of snow is typically accumulated.

What is the month with the shortest days in Post Oak?

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

What is the average length of the day in December in Post Oak?

In December, the average day length in Post Oak, Missouri, is 9h and 32min.

What time are sunrise and sunset in December in Post Oak?

On the first day of December in Post Oak, sunrise is at 7:14 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:04 pm CST.

How many hours of sunshine does Post Oak have in December?

The average sunshine duration in December in Post Oak, Missouri, is 5.2h.

When is the lowest UV index in Post Oak?

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

What is the UV index intensity in December in Post Oak?

The average daily maximum UV index in December in Post Oak is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Post Oak, MO

Average temperature in December - Post Oak, MO
  • Average high temperature in December: 42.3°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in December: 28.6°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).

Average pressure in December
Post Oak, MO

Average pressure in December - Post Oak, MO
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in December
Post Oak, MO

Average wind speed in December - Post Oak, MO
  • Average wind speed in December: 9.6mph

The windiest month (with the highest average wind speed) is March (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

Average humidity in December
Post Oak, MO

Average humidity in December - Post Oak, MO
  • Average humidity in December: 75%

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

Average rainfall in December
Post Oak, MO

Average rainfall in December - Post Oak, MO
  • Average rainfall in December: 1.14"

The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is January (0.87").

Average rainfall days in December
Post Oak, MO

Average rainfall days in December - Post Oak, MO
  • Average rainfall days in December: 7.1 days

The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (5.5 days).

Average snowfall in December
Post Oak, MO

Average snowfall in December - Post Oak, MO
  • Average snowfall in December: 1.18"

The month with the highest snowfall is January (1.77").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Post Oak, MO

Average snowfall days in December - Post Oak, MO
  • Average snowfall days in December: 3.7 days

The month with the highest number of snowfall days is February (6.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Post Oak, MO

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).

Average sunshine days in December
Post Oak, MO

Average sunshine days in December - Post Oak, MO
  • Average sunshine days in December: 20.6 days

The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is May (12.9 days).

Average UV index in December
Post Oak, MO

Average UV index in December - Post Oak, 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
Post Oak, MO

Average cloud cover in December - Post Oak, MO
  • Average cloud cover in December: 44

The month with the most cloud cover is March (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 28).

Average visibility in December
Post Oak, MO

Average visibility in December - Post Oak, 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).

Post Oak, Missouri, USA

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