December weather forecast
Dellwood, MO

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Weather in December

The first month of the winter, December, is also an icy month in Dellwood, Missouri, with an average temperature ranging between min 30°F (-1.1°C) and max 41.9°F (5.5°C).

Temperature

December implies a gentle temperature shift, with average high-temperatures reducing from November's fresh 52.9°F (11.6°C) to a cold 41.9°F (5.5°C). An average nighttime temperature of 30°F (-1.1°C) is recorded in Dellwood during December.

Humidity

The average relative humidity in December is 76%.

Rainfall

In Dellwood, Missouri, in December, it is raining for 8.2 days, with typically 2.05" (52mm) of accumulated precipitation. In Dellwood, during the entire year, the rain falls for 149 days and collects up to 31.61" (803mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. In Dellwood, during December, snow falls for 3.7 days and regularly aggregates up to 2.01" (51mm) of snow. In Dellwood, Missouri, during the entire year, snow falls for 19.5 days and aggregates up to 8.82" (224mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 7:00 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:19 am and sunset at 4:49 pm CST.

Sunshine

The average sunshine in December in Dellwood is 4.9h.

UV index

The months with the lowest UV index in Dellwood 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 the ordinary person.
Note: A daily high UV index of 2 in December leads to these guidelines:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Frequently asked questions

How cold is it in Dellwood in December?

The average high-temperature, in December, in Dellwood, is 41.9°F (5.5°C), while the average low-temperature is 30°F (-1.1°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is evaluated at 95°F (35°C).

What is the average humidity in December in Dellwood?

The average relative humidity in December in Dellwood is 76%.

How many days does it rain in December in Dellwood?

In Dellwood, during December, the rain falls for 8.2 days and regularly aggregates up to 2.05" (52mm) of precipitation.

How much does it snow in Dellwood in December?

In Dellwood, Missouri, in December, during 3.7 snowfall days, 2.01" (51mm) of snow is typically accumulated.

What is the month with the shortest days in Dellwood?

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

How many hours of daylight does Dellwood have in December?

In Dellwood, Missouri, the average day length in December is 9h and 31min.

When is the sunrise / sunset in December in Dellwood?

On the first day of December in Dellwood, sunrise is at 7:00 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:49 pm CST.

How long on average sun shines in December in Dellwood?

The average sunshine duration in December is 4.9h.

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

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

How high is the UV index in December in Dellwood?

In Dellwood, Missouri, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents 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
Dellwood, MO

Average temperature in December - Dellwood, MO
  • Average high temperature in December: 41.9°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 (37.2°F).

  • Average low temperature in December: 30°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).

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Average pressure in December
Dellwood, MO

Average pressure in December - Dellwood, 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
Dellwood, MO

Average wind speed in December - Dellwood, MO
  • Average wind speed in December: 8.7mph

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).

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Average humidity in December
Dellwood, MO

Average humidity in December - Dellwood, 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 (70%).

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Average rainfall in December
Dellwood, MO

Average rainfall in December - Dellwood, MO
  • Average rainfall in December: 2.05"

The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is February (1.69").

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Average rainfall days in December
Dellwood, MO

Average rainfall days in December - Dellwood, MO
  • Average rainfall days in December: 8.2 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (7.3 days).

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Average snowfall in December
Dellwood, MO

Average snowfall in December - Dellwood, MO
  • Average snowfall in December: 2.01"

The month with the highest snowfall is February (2.95").
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
Dellwood, MO

Average snowfall days in December - Dellwood, MO
  • Average snowfall days in December: 3.7 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
Dellwood, MO

Average daylight in December / Average sunshine in December - Dellwood, 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 months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in December
Dellwood, MO

Average sunshine days in December - Dellwood, MO
  • Average sunshine days in December: 18.9 days

The month with the most sunshine days is October (19 days).
The month with the least sunshine days is May (11 days).

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Average UV index in December
Dellwood, MO

Average UV index in December - Dellwood, MO
  • Average UV index in December: 2

The months with the highest UV index are May, 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
Dellwood, MO

Average cloud cover in December - Dellwood, MO
  • Average cloud cover in December: 48

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in December
Dellwood, MO

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

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