December weather forecastSaint Rose, LA

December

Weather in December

December, the first month of the winter in Saint Rose, is also an enjoyable month, with temperature in the range of an average high of 63.7°F (17.6°C) and an average low of 50.9°F (10.5°C).

Temperature

The arrival of December suggests a slight decrease in the average high-temperature, moving from a pleasant 69.1°F (20.6°C) in November to an enjoyable 63.7°F (17.6°C). The average low-temperature, in December, is a fresh 50.9°F (10.5°C).

Humidity

The months with the highest humidity are February and December, with an average relative humidity of 78%.

Rainfall

In Saint Rose, during December, the rain falls for 12.6 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, there are 180.8 rainfall days, and 33.39" (848mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January and December. December is the first month it typically snows in Saint Rose. Throughout December, there are 0.1 snowfall days. In Saint Rose, during the entire year, snow falls for 0.3 days.

Daylight

The month with the shortest days is December, with an average of 10h and 18min of daylight.
On the first day of the month, sunrise is at 6:39 am and sunset at 5:01 pm. On the last day of December, sunrise is at 6:56 am and sunset at 5:12 pm CST.

Sunshine

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

UV index

With an average maximum UV index of 3, December is the month with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: In December, an average UV index of 3 transforms into the following instructions:
Take necessary precautions - Defending against sun damage is advocated. Around midday, solar radiation is most harmful; hence, exposure should be limited. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.

Frequently asked questions

December temperatures vary between a high-temperature of 63.7°F (17.6°C) and a low-temperature of 50.9°F (10.5°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in September is calculated to be 98.6°F (37°C).

The months with the highest humidity are February and December, with an average relative humidity of 78%.

The average relative humidity in December is 78%.

In Saint Rose, in December, during 12.6 rainfall days, 2.52" (64mm) of precipitation is typically accumulated.

December is the first month it typically snows. Throughout December, there are 0.1 snowfall days.

December has the shortest days of the year in Saint Rose, with an average of 10h and 18min of daylight.

In December, the average day length in Saint Rose is 10h and 16min.

In December, on the first day of the month, sunrise is at 6:39 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 5:12 pm CST.

The month with the least sunshine is December, with an average of 5.1h of sunshine.

In December, the average sunshine duration is 5.1h.

The month with the lowest UV index in Saint Rose is December, with an average maximum UV index of 3.

The average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Saint Rose, LA

  • Average high temperature in December: 63.7°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (60.4°F).

  • Average low temperature in December: 50.9°F

The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (47.3°F).

Average pressure in December
Saint Rose, 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, August and September (29.97"Hg).

Average wind speed in December
Saint Rose, LA

  • Average wind speed in December: 8.5mph

The windiest months (with the highest average wind speed) are February and April (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in December
Saint Rose, LA

  • Average humidity in December: 78%

The months with the highest relative humidity are February and December (78%).
The month with the lowest relative humidity is October (72%).

Average rainfall in December
Saint Rose, LA

  • Average rainfall in December: 2.52"

The wettest month (with the highest rainfall) is July (5.39").
The driest month (with the least rainfall) is November (1.5").

Average rainfall days in December
Saint Rose, LA

  • Average rainfall days in December: 12.6 days

The month with the highest number of rainy days is August (23.7 days).
The month with the least rainy days is November (8.4 days).

Average snowfall days in December
Saint Rose, LA

  • Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

Average daylight in December /
Average sunshine in December
Saint Rose, LA

  • Average daylight in December: 10h and 18min

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

  • Average sunshine in December: 5h and 6min

The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

Average sunshine days in December
Saint Rose, LA

  • Average sunshine days in December: 16.5 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is August (4.8 days).

Average UV index in December
Saint Rose, LA

  • Average UV index in December: 3

The 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).

Average cloud cover in December
Saint Rose, 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).

Average visibility in December
Saint Rose, LA

  • 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).