December weather forecast
Mooresville, NC

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Weather in December

December in Mooresville heralds the arrival of winter in full swing, with temperatures slumping to 51.3°F (10.7°C). It also sees a rise in the amount of both snowfall, at 2.13" (54mm), and rainfall, amounting to 3.23" (82mm). The increase in these precipitations combined with shorter daylight hours and a decrease in sunshine hours lends a typically wintery character to the month. Despite the chill and moisture, the wind speed picks up slightly, offering a fresh, crisp aspect to December's weather.

Temperature

December signals a slight drop in average high-temperature, sliding from November's moderate 58.3°F (14.6°C) to a fresh 51.3°F (10.7°C). An average temperature of 36.5°F (2.5°C) is recorded during the nights in December.

Humidity

May and December, with an average relative humidity of 76%, are the most humid months.

Rainfall

In December, the rain falls for 11.2 days. Throughout December, 3.23" (82mm) of precipitation is accumulated. In Mooresville, during the entire year, the rain falls for 161.6 days and collects up to 32.91" (836mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. The month with the most snowfall is December, when snow falls for 0.8 days and typically aggregates up to 2.13" (54mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 48min of daylight.
On the first day of December in Mooresville, sunrise is at 7:14 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:20 pm EST.

Sunshine

December has the least sunshine of the year, with an average of 5.3h of sunshine.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index, 2 during December, leads to the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in December?

The high-temperature during December is 51.3°F (10.7°C) and the low-temperature is 36.5°F (2.5°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 87.8°F (31°C).

What are the most humid months?

The months with the highest humidity are May and December, with an average relative humidity of 76%.

What is the average humidity in December in Mooresville?

The average relative humidity in December is 76%.

How many days does it rain in December?

In Mooresville, in December, during 11.2 rainfall days, 3.23" (82mm) of precipitation is typically accumulated.

When does it snow the most?

December is the month with the most snowfall. Snow falls for 0.8 days and accumulates 2.13" (54mm) of snow.

How many days does it snow in December?

In Mooresville, in December, snow falls for 0.8 days, with typically accumulated 2.13" (54mm) of snow.

What is the month with the shortest days?

With an average of 9h and 48min of daylight, December has the shortest days of the year.

How many hours of daylight does Mooresville have in December?

In December, the average day length is 9h and 48min.

What time are sunrise and sunset in December in Mooresville?

On the first day of December in Mooresville, sunrise is at 7:14 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:20 pm EST.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 5.3h of sunshine.

How long on average sun shines in December?

In Mooresville, the average sunshine duration in December is 5.3h.

What is the month with the lowest UV index?

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

What is the UV index reading in December?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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
Mooresville, NC

Average temperature in December - Mooresville, NC
  • Average high temperature in December: 51.3°F

The warmest month (with the highest average high temperature) is July (89.8°F).
The month with the lowest average high temperature is January (46.9°F).

  • Average low temperature in December: 36.5°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).

Average pressure in December
Mooresville, NC

Average pressure in December - Mooresville, NC
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in December
Mooresville, NC

Average wind speed in December - Mooresville, NC
  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in December
Mooresville, NC

Average humidity in December - Mooresville, NC
  • Average humidity in December: 76%

The months with the highest relative humidity are May and December (76%).
The month with the lowest relative humidity is July (70%).

Average rainfall in December
Mooresville, NC

Average rainfall in December - Mooresville, NC
  • Average rainfall in December: 3.23"

The wettest month (with the highest rainfall) is April (3.46").
The driest month (with the least rainfall) is October (2.13").

Average rainfall days in December
Mooresville, NC

Average rainfall days in December - Mooresville, NC
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is August (18 days).
The month with the least rainy days is November (9.2 days).

Average snowfall in December
Mooresville, NC

Average snowfall in December - Mooresville, NC
  • Average snowfall in December: 2.13"

The month with the highest snowfall is December (2.13").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Mooresville, NC

Average snowfall days in December - Mooresville, NC
  • Average snowfall days in December: 0.8 days

The month with the highest number of snowfall days is February (2.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Mooresville, NC

Average daylight in December / Average sunshine in December - Mooresville, NC
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days in December
Mooresville, NC

Average sunshine days in December - Mooresville, NC
  • Average sunshine days in December: 17.2 days

The months with the most sunshine days are October and November (19.2 days).
The month with the least sunshine days is August (10.9 days).

Average UV index in December
Mooresville, NC

Average UV index in December - Mooresville, NC
  • 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 and December (UV index 2).

Average cloud cover in December
Mooresville, NC

Average cloud cover in December - Mooresville, NC
  • Average cloud cover in December: 43

The months with the most cloud cover are February and December (Cloud cover 43).
The months with the least cloud cover are June and July (Cloud cover 30).

Average visibility in December
Mooresville, NC

Average visibility in December - Mooresville, NC
  • 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).

Mooresville, North Carolina, USA

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