December weather forecast
Miller City, IL

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Weather in December

The first month of the winter, December, is still a chilly month in Miller City, Illinois, with an average temperature fluctuating between 33.8°F (1°C) and 45.5°F (7.5°C).

Temperature

The commencement of December indicates a shift in the average high-temperature, receding from November's refreshing 55.4°F (13°C) to a chilly 45.5°F (7.5°C). Miller City's average low-temperature for the month of December records at a wintry 33.8°F (1°C).

Humidity

The months with the highest humidity in Miller City are February, March, May and December, with an average relative humidity of 78%.

Rainfall

In Miller City, Illinois, in December, during 10.5 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. Throughout the year, in Miller City, there are 156.3 rainfall days, and 36.65" (931mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Miller City, Illinois, are January through April, October through December. In December, in Miller City, it is snowing for 1.5 days. Throughout December, 0.59" (15mm) of snow is accumulated. Throughout the year, there are 11.5 snowfall days, and 4.88" (124mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 42min of daylight.
On the first day of the month, sunrise is at 6:52 am and sunset at 4:40 pm. On the last day of December, sunrise is at 7:10 am and sunset at 4:50 pm CST.

Sunshine

The average sunshine in December is 4.9h.

UV index

The months with the lowest UV index in Miller City are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: During December, 2 as the daily maximum UV index converts into the following advice:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

What are the temperatures in Miller City in December?

In Miller City, 45.5°F (7.5°C) is the average high-temperature and 33.8°F (1°C) is the average low-temperature during December. In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 86°F (30°C).

What is the most humid month in Miller City?

The months with the highest humidity are February, March, May and December, with an average relative humidity of 78%.

What is the average humidity in December in Miller City?

In December, the average relative humidity in Miller City, Illinois, is 78%.

How much does it rain in Miller City in December?

In Miller City, Illinois, during December, the rain falls for 10.5 days and regularly aggregates up to 2.91" (74mm) of precipitation.

How much does it snow in Miller City in December?

In December, in Miller City, it is snowing for 1.5 days. Throughout December, 0.59" (15mm) of snow is accumulated.

What is the month with the shortest days in Miller City?

The month with the shortest days is December, with an average of 9h and 42min of daylight.

How many hours of daylight does Miller City have in December?

The average day length in December in Miller City is 9h and 40min.

When are sunrise and sunset in December in Miller City?

On the first day of December in Miller City, Illinois, sunrise is at 6:52 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 4:50 pm CST.

How many hours of sunshine does Miller City have in December?

In Miller City, Illinois, the average sunshine duration in December is 4.9h.

When is the lowest UV index in Miller City?

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

What is the UV index intensity in December in Miller City?

The average daily maximum UV index in December in Miller City is 2. A UV Index reading of 2, and below, represents a low health risk 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
Miller City, IL

Average temperature in December - Miller City, IL
  • Average high temperature in December: 45.5°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41.2°F).

  • Average low temperature in December: 33.8°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

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Average pressure in December
Miller City, IL

Average pressure in December - Miller City, IL
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in December
Miller City, IL

Average wind speed in December - Miller City, IL
  • Average wind speed in December: 8.5mph

The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in December
Miller City, IL

Average humidity in December - Miller City, IL
  • Average humidity in December: 78%

The months with the highest relative humidity are February, March, May and December (78%).
The month with the lowest relative humidity is October (69%).

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Average rainfall in December
Miller City, IL

Average rainfall in December - Miller City, IL
  • Average rainfall in December: 2.91"

The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (1.42").

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Average rainfall days in December
Miller City, IL

Average rainfall days in December - Miller City, IL
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.8 days).

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Average snowfall in December
Miller City, IL

Average snowfall in December - Miller City, IL
  • Average snowfall in December: 0.59"

The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Miller City, IL

Average snowfall days in December - Miller City, IL
  • Average snowfall days in December: 1.5 days

The month with the highest number of snowfall days is February (3.8 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
Miller City, IL

Average daylight in December / Average sunshine in December - Miller City, IL
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in December
Miller City, IL

Average sunshine days in December - Miller City, IL
  • Average sunshine days in December: 18.4 days

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (12.3 days).

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Average UV index in December
Miller City, IL

Average UV index in December - Miller City, IL
  • 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 and December (UV index 2).

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Average cloud cover in December
Miller City, IL

Average cloud cover in December - Miller City, IL
  • Average cloud cover in December: 47

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 26).

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Average visibility in December
Miller City, IL

Average visibility in December - Miller City, IL
  • 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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Miller City, Illinois, USA

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