December weather forecast
Royal Center, IN

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Weather in December

December, the first month of the winter in Royal Center, is also a wintry month, with an average temperature varying between 26.6°F (-3°C) and 36.5°F (2.5°C).

Temperature

Royal Center's December weather shows a moderate shift in high-temperatures, falling from November's chilly 47.7°F (8.7°C) to a cold 36.5°F (2.5°C). In the month of December, an average of 26.6°F (-3°C) marks the low-temperature.

Humidity

In December, the average relative humidity is 82%.

Rainfall

December is the month with the least rainfall in Royal Center, Indiana. Rain falls for 8.4 days and accumulates 1.02" (26mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In Royal Center, in December, snow falls for 7.3 days, with typically accumulated 1.18" (30mm) of snow. In Royal Center, during the entire year, snow falls for 36.1 days and aggregates up to 7.8" (198mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:51 am and sunset at 5:18 pm. On the last day of December, sunrise is at 8:10 am and sunset at 5:28 pm EST.

Sunshine

The average sunshine in December is 4.1h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 1 during December leads to these advisories:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Updated: Jun 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

The high-temperature, in December, in Royal Center, records 36.5°F (2.5°C), while the low-temperature is 26.6°F (-3°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in July is appraised at 87.8°F (31°C).

What is the average humidity in December?

In December, the average relative humidity is 82%.

What is the driest month?

The month with the least rainfall is December, when the rain falls for 8.4 days and typically collects 1.02" (26mm) of precipitation.

How much does it rain in December?

In Royal Center, in December, it is raining for 8.4 days, with typically 1.02" (26mm) of accumulated precipitation.

How many days does it snow in December?

In Royal Center, in December, snow falls for 7.3 days, with typically accumulated 1.18" (30mm) of snow.

What is the month with the shortest days?

With an average of 9h and 18min of daylight, December has the shortest days of the year.

How many hours of daylight does Royal Center have in December?

In Royal Center, the average day length in December is 9h and 18min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:51 am and sunset at 5:18 pm. On the last day of the month, in Royal Center, sunrise is at 8:10 am and sunset at 5:28 pm EST.

How many hours of sunshine does Royal Center have in December?

In December, the average sunshine duration is 4.1h.

When is the lowest UV index?

December is the month with the lowest UV index, with an average maximum UV index of 1.

What is the UV index reading in December?

In Royal Center, the average daily maximum UV index in December is 1. A UV Index estimate 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
Royal Center, IN

Average temperature in December - Royal Center, IN
  • Average high temperature in December: 36.5°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.7°F).

  • Average low temperature in December: 26.6°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in December
Royal Center, IN

Average pressure in December - Royal Center, IN
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Royal Center, IN

Average wind speed in December - Royal Center, IN
  • Average wind speed in December: 9.6mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

Average humidity in December
Royal Center, IN

Average humidity in December - Royal Center, IN
  • Average humidity in December: 82%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (73%).

Average rainfall in December
Royal Center, IN

Average rainfall in December - Royal Center, IN
  • Average rainfall in December: 1.02"

The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is December (1.02").

Average rainfall days in December
Royal Center, IN

Average rainfall days in December - Royal Center, IN
  • Average rainfall days in December: 8.4 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (6.1 days).

Average snowfall in December
Royal Center, IN

Average snowfall in December - Royal Center, IN
  • Average snowfall in December: 1.18"

The month with the highest snowfall is February (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Royal Center, IN

Average snowfall days in December - Royal Center, IN
  • Average snowfall days in December: 7.3 days

The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Royal Center, IN

Average daylight in December / Average sunshine in December - Royal Center, IN
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in December
Royal Center, IN

Average sunshine days in December - Royal Center, IN
  • Average sunshine days in December: 17 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.3 days).

Average UV index in December
Royal Center, IN

Average UV index in December - Royal Center, IN
  • Average UV index in December: 1

The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
Royal Center, IN

Average cloud cover in December - Royal Center, IN
  • Average cloud cover in December: 58

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are June, July, August and September (Cloud cover 34).

Average visibility in December
Royal Center, IN

Average visibility in December - Royal Center, IN
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

Royal Center, Indiana, USA

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