December weather forecast
Weldon Spring Heights, MO

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Weather in December

December, the first month of the winter in Weldon Spring Heights, is also a frosty month, with temperature in the range of an average high of 43°F (6.1°C) and an average low of 30°F (-1.1°C).

Temperature

Stepping into December, Weldon Spring Heights observes a temperature decline, with the average high falling from November's fresh 53.6°F (12°C) to a frosty 43°F (6.1°C). During the nights in December, Weldon Spring Heights observes an average low-temperature of 30°F (-1.1°C).

Humidity

The average relative humidity in December is 76%.

Rainfall

In December, the rain falls for 7.2 days. Throughout December, 1.5" (38mm) of precipitation is accumulated. Throughout the year, there are 139.6 rainfall days, and 26.1" (663mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In December, in Weldon Spring Heights, it is snowing for 3.5 days. Throughout December, 1.06" (27mm) of snow is accumulated. Throughout the year, there are 18.9 snowfall days, and 4.92" (125mm) of snow is accumulated.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:02 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:51 pm CST.

Sunshine

In Weldon Spring Heights, Missouri, the average sunshine in December is 4.9h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Weldon Spring Heights. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 2 suggests this advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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Frequently asked questions

How cold is it in Weldon Spring Heights in December?

In Weldon Spring Heights, 43°F (6.1°C) is the average high-temperature and 30°F (-1.1°C) is the average low-temperature during December. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is evaluated at 96.8°F (36°C).

What is the average humidity in December in Weldon Spring Heights?

In December, the average relative humidity in Weldon Spring Heights, Missouri, is 76%.

How much does it rain in Weldon Spring Heights in December?

In Weldon Spring Heights, during December, the rain falls for 7.2 days and regularly aggregates up to 1.5" (38mm) of precipitation.

How many days does it snow in December in Weldon Spring Heights?

In Weldon Spring Heights, Missouri, in December, during 3.5 snowfall days, 1.06" (27mm) of snow is typically accumulated.

What is the month with the shortest days in Weldon Spring Heights?

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

How many hours of daylight does Weldon Spring Heights have in December?

The average day length in December in Weldon Spring Heights is 9h and 31min.

What time are sunrise and sunset in December in Weldon Spring Heights?

On the first day of December, sunrise is at 7:02 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:51 pm CST.

How many hours of sunshine does Weldon Spring Heights have in December?

In Weldon Spring Heights, Missouri, the average sunshine duration in December is 4.9h.

What is the month with the lowest UV index in Weldon Spring Heights?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Weldon Spring Heights, Missouri.

What is the UV index intensity in December in Weldon Spring Heights?

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat from exposure to the Sun's UV radiation.
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
Weldon Spring Heights, MO

Average temperature in December - Weldon Spring Heights, MO
  • Average high temperature in December: 43°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in December: 30°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 (24.1°F).

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Average pressure in December
Weldon Spring Heights, MO

Average pressure in December - Weldon Spring Heights, MO
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in December
Weldon Spring Heights, MO

Average wind speed in December - Weldon Spring Heights, MO
  • Average wind speed in December: 8.3mph

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is July (5.4mph).

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Average humidity in December
Weldon Spring Heights, MO

Average humidity in December - Weldon Spring Heights, MO
  • Average humidity in December: 76%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in December
Weldon Spring Heights, MO

Average rainfall in December - Weldon Spring Heights, MO
  • Average rainfall in December: 1.5"

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is February (1.3").

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Average rainfall days in December
Weldon Spring Heights, MO

Average rainfall days in December - Weldon Spring Heights, MO
  • Average rainfall days in December: 7.2 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (6.8 days).

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Average snowfall in December
Weldon Spring Heights, MO

Average snowfall in December - Weldon Spring Heights, MO
  • Average snowfall in December: 1.06"

The month with the highest snowfall is February (1.69").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Weldon Spring Heights, MO

Average snowfall days in December - Weldon Spring Heights, MO
  • Average snowfall days in December: 3.5 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).

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Average daylight in December /
Average sunshine in December
Weldon Spring Heights, MO

Average daylight in December / Average sunshine in December - Weldon Spring Heights, 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: 4h and 5min

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

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Average sunshine days in December
Weldon Spring Heights, MO

Average sunshine days in December - Weldon Spring Heights, MO
  • Average sunshine days in December: 20.2 days

The months with the most sunshine days are January and December (20.2 days).
The month with the least sunshine days is June (12 days).

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Average UV index in December
Weldon Spring Heights, MO

Average UV index in December - Weldon Spring Heights, MO
  • Average UV index in December: 2

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Weldon Spring Heights, MO

Average cloud cover in December - Weldon Spring Heights, MO
  • Average cloud cover in December: 47

The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 27).

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Average visibility in December
Weldon Spring Heights, MO

Average visibility in December - Weldon Spring Heights, 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).

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Weldon Spring Heights, Missouri, USA

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