December weather forecast
Bethany, MO

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Weather in December

December brings in the winter weather full force. Bethany experiences a considerable drop in temperature from November, and colder conditions become more pronounced during this month. The city sees an increment in the average snowfall, with approximately 1.42" (36mm) distributed over around 4.7 days. The marked decrease in daylight and sunshine hours makes days seem significantly shorter, and the winter solstice, the shortest day of the year, occurs in December. As December unfolds, the weather indeed gives a frosty welcome to winter and the New Year.

Temperature

The shift from November to December involves a decrease in the average high-temperature, from a frosty 49.6°F (9.8°C) to an icy 37°F (2.8°C). Bethany's average low-temperature for the month of December records at a subzero cold 24.1°F (-4.4°C).

Humidity

The average relative humidity in December is 78%.

Rainfall

In Bethany, during December, the rain falls for 5.4 days and regularly aggregates up to 0.94" (24mm) of precipitation. In Bethany, during the entire year, the rain falls for 129.2 days and collects up to 25.35" (644mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Bethany, in December, during 4.7 snowfall days, 1.42" (36mm) of snow is typically accumulated. In Bethany, during the entire year, snow falls for 26.5 days and aggregates up to 12.64" (321mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year in Bethany.
On the first day of December in Bethany, sunrise is at 7:20 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 5:00 pm CST.

Sunshine

The average sunshine in December is 5h.

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 value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
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Frequently asked questions

How cold is December in Bethany?

In December, in Bethany, the average high-temperature is 37°F (2.8°C), and the average low-temperature is 24.1°F (-4.4°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, in August is calculated to be 89.6°F (32°C).

What is the average humidity in December in Bethany?

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

How much does it rain in Bethany in December?

In Bethany, in December, during 5.4 rainfall days, 0.94" (24mm) of precipitation is typically accumulated.

How many days does it snow in December in Bethany?

In Bethany, Missouri, in December, snow falls for 4.7 days, with typically accumulated 1.42" (36mm) of snow.

What is the month with the shortest days in Bethany?

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

How many hours of daylight does Bethany have in December?

In December, the average day length in Bethany is 9h and 22min.

When is the sunrise / sunset in December in Bethany?

In December, on the first day of the month, sunrise is at 7:20 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 5:00 pm CST.

How many hours of sunshine does Bethany have in December?

In Bethany, Missouri, the average sunshine duration in December is 5h.

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

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

How high is the UV index in December in Bethany?

The average daily maximum UV index in December in Bethany, Missouri, is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Bethany, MO

Average temperature in December - Bethany, MO
  • Average high temperature in December: 37°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in December: 24.1°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 (18.7°F).

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Average pressure in December
Bethany, MO

Average pressure in December - Bethany, MO
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in December
Bethany, MO

Average wind speed in December - Bethany, MO
  • Average wind speed in December: 9.4mph

The windiest month (with the highest average wind speed) is March (10mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

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Average humidity in December
Bethany, MO

Average humidity in December - Bethany, MO
  • Average humidity in December: 78%

The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in December
Bethany, MO

Average rainfall in December - Bethany, MO
  • Average rainfall in December: 0.94"

The wettest month (with the highest rainfall) is June (3.86").
The driest months (with the least rainfall) are January and February (0.91").

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Average rainfall days in December
Bethany, MO

Average rainfall days in December - Bethany, MO
  • Average rainfall days in December: 5.4 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (4.1 days).

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Average snowfall in December
Bethany, MO

Average snowfall in December - Bethany, MO
  • Average snowfall in December: 1.42"

The month with the highest snowfall is January (3.62").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Bethany, MO

Average snowfall days in December - Bethany, MO
  • Average snowfall days in December: 4.7 days

The month with the highest number of snowfall days is January (8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Bethany, MO

Average daylight in December / Average sunshine in December - Bethany, MO
  • Average daylight in December: 9h and 2min

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: 5h and 0min

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 36min).

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Average sunshine days in December
Bethany, MO

Average sunshine days in December - Bethany, MO
  • Average sunshine days in December: 20.3 days

The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in December
Bethany, MO

Average UV index in December - Bethany, 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).

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Average cloud cover in December
Bethany, MO

Average cloud cover in December - Bethany, MO
  • Average cloud cover in December: 45

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

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Average visibility in December
Bethany, MO

Average visibility in December - Bethany, 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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Bethany, Missouri, USA

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