December weather forecast
Melville, LA

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Weather in December

December signals the start of the wintry season in Melville, Louisiana. A sharp decrease in temperature from November introduces winter's chill. Light snow may fall on rare occasions, offering a deviation from the usual weather patterns with snowfall slightly up to 0.16" (4mm). While December welcomes winter's arrival, the decrease in cloud cover allows for clearer skies. The short daylight hours and dramatically cooler temperatures confirm the onset of winter.

Temperature

December's onset brings a negligible change in high-temperatures, falling from an enjoyable 67.3°F (19.6°C) in November to a still refreshing 60.1°F (15.6°C). Throughout the December nights, Melville encounters a low-temperature of 45.5°F (7.5°C).

Humidity

The average relative humidity in December is 81%.

Rainfall

In Melville, during December, the rain falls for 13.9 days and regularly aggregates up to 3.35" (85mm) of precipitation. Throughout the year, there are 182 rainfall days, and 39.09" (993mm) of precipitation is accumulated.

Snowfall

January and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.16" (4mm) of snow. Throughout the year, there are 0.9 snowfall days, and 0.39" (10mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 10h and 12min of daylight.
On the first day of the month, sunrise is at 6:47 am and sunset at 5:05 pm. On the last day of December, in Melville, sunrise is at 7:04 am and sunset at 5:16 pm CST.

Sunshine

The month with the least sunshine is December, with an average of 4.9h of sunshine.

UV index

January and December, with an average maximum UV index of 3, are months with the lowest UV index in Melville. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: A typical high UV index of 3 in December suggests the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average December temperature?

Melville in December has an average high-temperature of 60.1°F (15.6°C) and an average low-temperature of 45.5°F (7.5°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is appraised at 104°F (40°C).

What is the average humidity in December?

The average relative humidity in December is 81%.

How much does it rain in December?

In Melville, during December, the rain falls for 13.9 days and regularly aggregates up to 3.35" (85mm) of precipitation.

When does it start to snow?

December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.16" (4mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 10h and 12min of daylight.

What is the average length of the day in December?

In Melville, the average day length in December is 10h and 12min.

When are sunrise and sunset in December in Melville?

On the first day of December, sunrise is at 6:47 am and sunset at 5:05 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 5:16 pm CST.

What is the month with the least sunshine?

With an average of 4.9h of sunshine, December has the least sunshine of the year.

How many hours of sunshine does Melville have in December?

In Melville, the average sunshine duration in December is 4.9h.

What is the month with the lowest UV index?

The months with the lowest UV index are January and December, with an average maximum UV index of 3.

How high is the UV index in December?

The average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
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
Melville, LA

Average temperature in December - Melville, LA
  • Average high temperature in December: 60.1°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (57.2°F).

  • Average low temperature in December: 45.5°F

The month with the highest average low temperature is August (73.4°F).
The coldest month (with the lowest average low temperature) is January (41.9°F).

Average pressure in December
Melville, LA

Average pressure in December - Melville, LA
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.96"Hg).

Average wind speed in December
Melville, LA

Average wind speed in December - Melville, LA
  • Average wind speed in December: 6.9mph

The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.8mph).

Average humidity in December
Melville, LA

Average humidity in December - Melville, LA
  • Average humidity in December: 81%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (72%).

Average rainfall in December
Melville, LA

Average rainfall in December - Melville, LA
  • Average rainfall in December: 3.35"

The wettest month (with the highest rainfall) is August (4.61").
The driest month (with the least rainfall) is November (2.2").

Average rainfall days in December
Melville, LA

Average rainfall days in December - Melville, LA
  • Average rainfall days in December: 13.9 days

The month with the highest number of rainy days is August (22.5 days).
The month with the least rainy days is November (9.7 days).

Average snowfall in December
Melville, LA

Average snowfall in December - Melville, LA
  • Average snowfall in December: 0.16"

The month with the highest snowfall is January (0.24").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").

Average snowfall days in December
Melville, LA

Average snowfall days in December - Melville, LA
  • Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in December /
Average sunshine in December
Melville, LA

Average daylight in December / Average sunshine in December - Melville, LA
  • Average daylight in December: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).

Average sunshine days in December
Melville, LA

Average sunshine days in December - Melville, LA
  • Average sunshine days in December: 15.3 days

The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is August (6.5 days).

Average UV index in December
Melville, LA

Average UV index in December - Melville, LA
  • Average UV index in December: 3

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in December
Melville, LA

Average cloud cover in December - Melville, LA
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 28).

Average visibility in December
Melville, LA

Average visibility in December - Melville, LA
  • Average visibility in December: 6mi

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

Melville, Louisiana, USA

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