December weather forecast
Plain Dealing, LA

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Weather in December

The first month of the winter, December, is still a cool month in Plain Dealing, Louisiana, with temperature in the range of an average low of 40.5°F (4.7°C) and an average high of 55.2°F (12.9°C).

Temperature

Plain Dealing's progression into December involves a gentle drop in the average high-temperature, from an enjoyable 63.5°F (17.5°C) in November to a cool 55.2°F (12.9°C). During the nights in December, the temperature averages to an icy 40.5°F (4.7°C).

Humidity

The average relative humidity in December is 80%.

Rainfall

In Plain Dealing, in December, during 12 rainfall days, 3.66" (93mm) of precipitation is typically accumulated. In Plain Dealing, during the entire year, the rain falls for 149.9 days and collects up to 36.1" (917mm) of precipitation.

Snowfall

April through December are months without snowfall.

Daylight

The month with the shortest days is December, with an average of 10h and 0min of daylight.
On the first day of the month, sunrise is at 7:00 am and sunset at 5:08 pm. On the last day of December, sunrise is at 7:17 am and sunset at 5:18 pm CST.

Sunshine

In December, the average sunshine in Plain Dealing is 4.9h.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 3 in December interprets into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Plain Dealing in December?

The high-temperature during December is 55.2°F (12.9°C) and the low-temperature is 40.5°F (4.7°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 100.4°F (38°C).

What is the average humidity in December in Plain Dealing?

In December, the average relative humidity is 80%.

How many days does it rain in December?

In Plain Dealing, during December, the rain falls for 12 days and regularly aggregates up to 3.66" (93mm) of precipitation.

When it does not snow?

April through December are months without snowfall.

Does it snow in December?

In Plain Dealing, Louisiana, in December, it doesn't snow. In January, it regularly snows.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 10h and 0min of daylight.

What is the average length of the day in December?

In December, the average day length is 10h and 1min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:00 am and sunset at 5:08 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:18 pm CST.

How long on average sun shines in December?

In December, the average sunshine duration is 4.9h.

What are the months with the lowest UV index?

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

What is the UV index reading in December?

The average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
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
Plain Dealing, LA

Average temperature in December - Plain Dealing, LA
  • Average high temperature in December: 55.2°F

The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is January (53.2°F).

  • Average low temperature in December: 40.5°F

The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (37.4°F).

Average pressure in December
Plain Dealing, LA

Average pressure in December - Plain Dealing, LA
  • 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 (29.93"Hg).

Average wind speed in December
Plain Dealing, LA

Average wind speed in December - Plain Dealing, LA
  • Average wind speed in December: 6.2mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in December
Plain Dealing, LA

Average humidity in December - Plain Dealing, LA
  • Average humidity in December: 80%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is August (68%).

Average rainfall in December
Plain Dealing, LA

Average rainfall in December - Plain Dealing, LA
  • Average rainfall in December: 3.66"

The wettest month (with the highest rainfall) is April (4.65").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in December
Plain Dealing, LA

Average rainfall days in December - Plain Dealing, LA
  • Average rainfall days in December: 12 days

The month with the highest number of rainy days is July (14.3 days).
The months with the least rainy days are October and November (10.1 days).

Average snowfall in December
Plain Dealing, LA

Average snowfall in December - Plain Dealing, LA
  • Average snowfall in December: 0"

The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

Average snowfall days in December
Plain Dealing, LA

Average snowfall days in December - Plain Dealing, LA
  • Average snowfall days in December: 0.3 days

The month with the highest number of snowfall days is February (1.4 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
Plain Dealing, LA

Average daylight in December / Average sunshine in December - Plain Dealing, LA
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Plain Dealing, LA

Average sunshine days in December - Plain Dealing, LA
  • Average sunshine days in December: 17.1 days

The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is February (13.5 days).

Average UV index in December
Plain Dealing, LA

Average UV index in December - Plain Dealing, 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, February, November and December (UV index 3).

Average cloud cover in December
Plain Dealing, LA

Average cloud cover in December - Plain Dealing, LA
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in December
Plain Dealing, LA

Average visibility in December - Plain Dealing, LA
  • Average visibility in December: 5mi

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

Plain Dealing, Louisiana, USA

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