December weather forecast and climate
Slidell, LA

Weather in December

The first month of the winter, December, is still a comfortable month in Slidell, Louisiana, with temperature in the range of an average low of 49.5°F (9.7°C) and an average high of 62.1°F (16.7°C).

Temperature

In Slidell, the average high-temperature in December marginally drops, from a pleasant 68.4°F (20.2°C) in November, to a comfortable 62.1°F (16.7°C). In Slidell, in December, the average low-temperature is 49.5°F (9.7°C).

Humidity

With an average relative humidity of 79%, December is the most humid month in Slidell.

Rainfall

In Slidell, Louisiana, during December, the rain falls for 13.1 days and regularly aggregates up to 2.68" (68mm) of precipitation. Throughout the year, there are 173.3 rainfall days, and 30.79" (782mm) of precipitation is accumulated.

Snowfall

In Slidell snow does not fall in February through December.

Daylight

The month with the shortest days in Slidell is December, with an average of 10.2h of daylight.

Sunshine

With an average of 5.1h of sunshine, December has the least sunshine of the year.

UV index

December is the month with the lowest UV index in Slidell, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 3 in December transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the temperature in December in Slidell?

In Slidell, Louisiana, in December, the average high-temperature is 62.1°F (16.7°C), and the average low-temperature is 49.5°F (9.7°C).

What is the most humid month in Slidell?

With an average relative humidity of 79%, December is the most humid month in Slidell, Louisiana.

What is the average humidity in December in Slidell?

In Slidell, Louisiana, the average relative humidity in December is 79%.

How much does it rain in Slidell in December?

In Slidell, Louisiana, in December, it is raining for 13.1 days, with typically 2.68" (68mm) of accumulated precipitation.

Does it snow in Slidell in December?

In Slidell, in December, it doesn't snow. In January, it regularly snows.

When it does not snow in Slidell?

In Slidell snow does not fall in February through December.

What is the month with the shortest days in Slidell?

December has the shortest days of the year in Slidell, with an average of 10.2h of daylight.

What is the average length of the day in December in Slidell?

In December, the average length of the day in Slidell, Louisiana, is 10.2h.

What is the month with the least sunshine in Slidell?

December has the least sunshine of the year, with an average of 5.1h of sunshine.

How many hours of sunshine does Slidell have in December?

In Slidell, the average sunshine in December is 5.1h.

What is the month with the lowest UV index in Slidell?

December is the month with the lowest UV index in Slidell, Louisiana, with an average maximum UV index of 3.

What is the UV index reading in December in Slidell?

In December, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.

Average temperature in December
Slidell, LA

Average temperature in December - Slidell, LA
  • Average high temperature in December: 62.1°F

The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (59.4°F).

  • Average low temperature in December: 49.5°F

The month with the highest average low temperature is August (77.4°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).

[Resources]

Average pressure in December
Slidell, LA

Average pressure in December - Slidell, LA
  • Average pressure in December: 30.13"

The month with the highest atmospheric pressure is January (30.17").
Months with the lowest atmospheric pressure are June and August (29.97").

[Resources]

Average wind speed in December
Slidell, LA

Average wind speed in December - Slidell, LA
  • Average wind speed in December: 7.4mph

The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is July (5.4mph).

[Resources]

Average humidity in December
Slidell, LA

Average humidity in December - Slidell, LA
  • Average humidity in December: 79%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (70%).

[Resources]

Average rainfall in December
Slidell, LA

Average rainfall in December - Slidell, LA
  • Average rainfall in December: 2.68"

The wettest month (with the highest rainfall) is August (4.92").
The driest month (with the least rainfall) is November (1.5").

[Resources]

Average rainfall days in December
Slidell, LA

Average rainfall days in December - Slidell, LA
  • Average rainfall days in December: 13.1 days

The month with the highest number of rainy days is August (23.5 days).
The month with the least rainy days is November (8 days).

[Resources]

Average snowfall in December
Slidell, LA

Average snowfall in December - Slidell, LA
  • Average snowfall in December: 0"

The month with the highest snowfall is January (0.2").
Months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

[Resources]

Average snowfall days in December
Slidell, LA

Average snowfall days in December - Slidell, LA
  • Average snowfall days in December: 0.2 days

The month with the highest number of snowfall days is January (0.3 days).
Months with the least snowfall days are February, March, April, May, June, July, August, October and November (0 days).

[Resources]

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

Average daylight in December / Average sunshine in December - Slidell, LA
  • Average daylight in December: 10.2h

The month with the longest days is June (Average daylight: 14.1h).
The month with the shortest days is December (Average daylight: 10.2h).

  • Average sunshine in December: 5.1h

The month with the most sunshine is June (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 5.1h).

[Resources]

Average sunshine days in December
Slidell, LA

Average sunshine days in December - Slidell, LA
  • Average sunshine days in December: 16.4 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (5.1 days).

[Resources]

Average UV index in December
Slidell, LA

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

Months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

[Resources]

Average cloud cover in December
Slidell, LA

Average cloud cover in December - Slidell, LA
  • Average cloud cover in December: 45

The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 24).

[Resources]

Average visibility in December
Slidell, LA

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

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

[Resources]