December weather forecast
Napoleon, MO

Weather in December

The first month of the winter, December, is also a wintry month in Napoleon, Missouri, with an average temperature varying between 40.3°F (4.6°C) and 27.1°F (-2.7°C).

Temperature

In December, the average high-temperature drops from a fresh 52.3°F (11.3°C) in November to a cold 40.3°F (4.6°C). In December, in Napoleon, the average low-temperature is 27.1°F (-2.7°C).

Humidity

The average relative humidity in December in Napoleon is 75%.

Rainfall

In Napoleon, it is raining for 5.6 days, with typically 1.54" (39mm) of accumulated precipitation. Throughout the year, there are 136.3 rainfall days, and 27.28" (693mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, May, October through December. In Napoleon, snow falls for 3.5 days, with typically accumulated 1.14" (29mm) of snow. In Napoleon, during the entire year, snow falls for 16.7 days and aggregates up to 8.86" (225mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 28min of daylight.
On the first day of the month, sunrise is at 7:16 am and sunset at 4:54 pm. On the last day of December, in Napoleon, Missouri, sunrise is at 7:35 am and sunset at 5:03 pm CST.

Sunshine

In December, the average sunshine is 5.2h.

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 estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 2 in December transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Napoleon?

In Napoleon, in December, the average high-temperature is 40.3°F (4.6°C), and the average low-temperature is 27.1°F (-2.7°C). in August, the average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 95°F (35°C).

What is the average humidity in December in Napoleon?

The average relative humidity in December in Napoleon is 75%.

How much does it rain in Napoleon in December?

In Napoleon, in December, during 5.6 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

How many days does it snow in December in Napoleon?

In Napoleon, in December, during 3.5 snowfall days, 1.14" (29mm) of snow is typically accumulated.

What is the month with the shortest days in Napoleon?

December has the shortest days of the year in Napoleon, Missouri, with an average of 9h and 28min of daylight.

How many hours of daylight does Napoleon have in December?

In Napoleon, the average day length in December is 9h and 28min.

What time are sunrise and sunset in December in Napoleon?

On the first day of December in Napoleon, Missouri, sunrise is at 7:16 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:03 pm CST.

How long on average sun shines in December in Napoleon?

In December, the average sunshine duration in Napoleon, Missouri, is 5.2h.

What are the months with the lowest UV index in Napoleon?

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

What is the UV index intensity in December in Napoleon?

In Napoleon, Missouri, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health threat 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
Napoleon, MO

Average temperature in December - Napoleon, MO
  • Average high temperature in December: 40.3°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in December: 27.1°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

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Average pressure in December
Napoleon, MO

Average pressure in December - Napoleon, 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 (29.89"Hg).

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Average wind speed in December
Napoleon, MO

Average wind speed in December - Napoleon, MO
  • Average wind speed in December: 9.1mph

The windiest month (with the highest average wind speed) is March (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in December
Napoleon, MO

Average humidity in December - Napoleon, MO
  • Average humidity in December: 75%

The months with the highest relative humidity are May and June (79%).
The months with the lowest relative humidity are October and November (71%).

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Average rainfall in December
Napoleon, MO

Average rainfall in December - Napoleon, MO
  • Average rainfall in December: 1.54"

The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is January (0.94").

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Average rainfall days in December
Napoleon, MO

Average rainfall days in December - Napoleon, MO
  • Average rainfall days in December: 5.6 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (5.4 days).

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Average snowfall in December
Napoleon, MO

Average snowfall in December - Napoleon, MO
  • Average snowfall in December: 1.14"

The month with the highest snowfall is February (3.35").
The months with the least snowfall are April, June, July, August and September (0").

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Average snowfall days in December
Napoleon, MO

Average snowfall days in December - Napoleon, MO
  • Average snowfall days in December: 3.5 days

The month with the highest number of snowfall days is February (4.9 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
Napoleon, MO

Average daylight in December / Average sunshine in December - Napoleon, MO
  • Average daylight in December: 9h and 28min

The month with the longest days is June (Average daylight: 14h and 53min).
The month with the shortest days is December (Average daylight: 9h and 28min).

  • Average sunshine in December: 5h and 12min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).

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Average sunshine days in December
Napoleon, MO

Average sunshine days in December - Napoleon, MO
  • Average sunshine days in December: 22 days

The month with the most sunshine days is December (22 days).
The months with the least sunshine days are May and June (11.6 days).

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Average UV index in December
Napoleon, MO

Average UV index in December - Napoleon, 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
Napoleon, MO

Average cloud cover in December - Napoleon, MO
  • Average cloud cover in December: 42

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 26).

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Average visibility in December
Napoleon, MO

Average visibility in December - Napoleon, 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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