December weather forecastMilan, MO

December

Weather in December

The first month of the winter, December, is also an icy month in Milan, Missouri, with an average temperature varying between 37°F (2.8°C) and 24.6°F (-4.1°C).

Temperature

With the beginning of December, the average high-temperature shows a decrease, transitioning from a frosty 49.5°F (9.7°C) in November to a wintry 37°F (2.8°C). During December, Milan sees a mean low-temperature of 24.6°F (-4.1°C).

Humidity

In Milan, Missouri, the average relative humidity in December is 79%.

Rainfall

In Milan, during December, the rain falls for 6.5 days and regularly aggregates up to 1.02" (26mm) of precipitation. Throughout the year, in Milan, there are 134.1 rainfall days, and 25.75" (654mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Milan are January through May, October through December. In Milan, in December, snow falls for 5.6 days, with typically accumulated 1.38" (35mm) of snow. In Milan, Missouri, during the entire year, snow falls for 27 days and aggregates up to 12.01" (305mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:16 am and sunset at 4:47 pm. On the last day of December, in Milan, sunrise is at 7:34 am and sunset at 4:56 pm CST.

Sunshine

The average sunshine in December in Milan is 4.8h.

UV index

The months with the lowest UV index in Milan are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 2 during December leads to these instructions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in Milan, records 37°F (2.8°C), while the low-temperature is 24.6°F (-4.1°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 89.6°F (32°C).

In December, the average relative humidity in Milan is 79%.

In Milan, Missouri, during December, the rain falls for 6.5 days and regularly aggregates up to 1.02" (26mm) of precipitation.

In December, in Milan, Missouri, it is snowing for 5.6 days. Throughout December, 1.38" (35mm) of snow is accumulated.

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

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

In December, on the first day of the month, sunrise is at 7:16 am and sunset at 4:47 pm. On the last day of the month, in Milan, Missouri, sunrise is at 7:34 am and sunset at 4:56 pm CST.

In December, the average sunshine duration is 4.8h.

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

The average daily maximum UV index in December in Milan, Missouri, is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Milan, MO

  • Average high temperature in December: 37°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (32.2°F).

  • Average low temperature in December: 24.6°F

The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in December
Milan, 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 (29.9"Hg).

Average wind speed in December
Milan, MO

  • Average wind speed in December: 9.6mph

The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in December
Milan, MO

  • Average humidity in December: 79%

The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is October (72%).

Average rainfall in December
Milan, MO

  • Average rainfall in December: 1.02"

The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (0.94").

Average rainfall days in December
Milan, MO

  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.6 days).

Average snowfall in December
Milan, MO

  • Average snowfall in December: 1.38"

The month with the highest snowfall is January (4.02").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Milan, MO

  • Average snowfall days in December: 5.6 days

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

  • Average daylight in December: 9h and 24min

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: 4h and 48min

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 30min).

Average sunshine days in December
Milan, MO

  • Average sunshine days in December: 20.6 days

The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is May (10.8 days).

Average UV index in December
Milan, 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
Milan, MO

  • Average cloud cover in December: 47

The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in December
Milan, 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).