December weather forecast
Westphalia, MO

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Weather in December

The first month of the winter, December, is still a chilly month in Westphalia, Missouri, with an average temperature ranging between min 29.1°F (-1.6°C) and max 42.8°F (6°C).

Temperature

In Westphalia, the average high-temperature in December drops from a cool 53.8°F (12.1°C) in November to a chilly 42.8°F (6°C). December brings Westphalia a consistent average low-temperature of 29.1°F (-1.6°C).

Humidity

The average relative humidity in December is 76%.

Rainfall

In Westphalia, Missouri, during December, the rain falls for 4.6 days and regularly aggregates up to 0.51" (13mm) of precipitation. Throughout the year, in Westphalia, Missouri, 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 Westphalia. In Westphalia, in December, during 2.8 snowfall days, 0.43" (11mm) of snow is typically accumulated. Throughout the year, in Westphalia, Missouri, there are 14.9 snowfall days, and 2.13" (54mm) 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 the month, sunrise is at 7:07 am and sunset at 4:47 pm. On the last day of December, in Westphalia, Missouri, sunrise is at 7:25 am and sunset at 4:57 pm CST.

Sunshine

In December, the average sunshine 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 Westphalia. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 2 in December interprets into the following advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Opt for tightly woven and loose clothing to enhance protection from the Sun. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in Westphalia in December?

During December, Westphalia experiences an average high-temperature of 42.8°F (6°C) and a low-temperature of 29.1°F (-1.6°C). The average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is appraised at 100.4°F (38°C).

What is the average humidity in December in Westphalia?

In December, the average relative humidity in Westphalia is 76%.

How many days does it rain in December in Westphalia?

In December, the rain falls for 4.6 days. Throughout December, 0.51" (13mm) of precipitation is accumulated.

How much does it snow in Westphalia in December?

In Westphalia, in December, during 2.8 snowfall days, 0.43" (11mm) of snow is typically accumulated.

What is the month with the shortest days in Westphalia?

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

What is the average length of the day in December in Westphalia?

The average day length in December is 9h and 32min.

What time are sunrise and sunset in December in Westphalia?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:47 pm. On the last day of the month, in Westphalia, sunrise is at 7:25 am and sunset at 4:57 pm CST.

How many hours of sunshine does Westphalia have in December?

The average sunshine duration in December in Westphalia is 5.1h.

What is the month with the lowest UV index in Westphalia?

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

What is the UV index reading in December in Westphalia?

In December, the average daily maximum UV index in Westphalia, Missouri, is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to 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
Westphalia, MO

Average temperature in December - Westphalia, 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).

Average pressure in December
Westphalia, MO

Average pressure in December - Westphalia, 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).

Average wind speed in December
Westphalia, MO

Average wind speed in December - Westphalia, 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).

Average humidity in December
Westphalia, MO

Average humidity in December - Westphalia, 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
Westphalia, MO

Average rainfall in December - Westphalia, 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").

Average rainfall days in December
Westphalia, MO

Average rainfall days in December - Westphalia, 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).

Average snowfall in December
Westphalia, MO

Average snowfall in December - Westphalia, MO
  • Average snowfall in December: 0.43"

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

Average snowfall days in December
Westphalia, MO

Average snowfall days in December - Westphalia, MO
  • Average snowfall days in December: 2.8 days

The month with the highest number of snowfall days is January (5.2 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
Westphalia, MO

Average daylight in December / Average sunshine in December - Westphalia, 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 month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Westphalia, MO

Average sunshine days in December - Westphalia, 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).

Average UV index in December
Westphalia, MO

Average UV index in December - Westphalia, 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
Westphalia, MO

Average cloud cover in December - Westphalia, MO
  • Average cloud cover in December: 46

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

Average visibility in December
Westphalia, MO

Average visibility in December - Westphalia, 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).

Westphalia, Missouri, USA

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