December weather forecast
Head of Island, LA

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Weather in December

The first month of the winter, December, is still a refreshing month in Head of Island, Louisiana, with an average temperature varying between 47.7°F (8.7°C) and 62.2°F (16.8°C).

Temperature

Head of Island experiences a moderate temperature shift at the start of December, with average high-temperatures adjusting a bit from an agreeable 68.9°F (20.5°C) in November to a comfortable 62.2°F (16.8°C). Head of Island observes an average nighttime low-temperature of 47.7°F (8.7°C) during the month of December.

Humidity

The months with the highest humidity are February and December, with an average relative humidity of 81%.

Rainfall

In December, the rain falls for 10.7 days. Throughout December, 1.3" (33mm) of precipitation is accumulated. Throughout the year, there are 151.5 rainfall days, and 18.62" (473mm) of precipitation is accumulated.

Snowfall

In Head of Island, snow does not fall in February through December.

Daylight

December has the shortest days of the year, with an average of 10h and 12min of daylight.
On the first day of December, sunrise is at 6:42 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 5:13 pm CST.

Sunshine

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

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 moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 3 transforms into these recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are December temperatures?

In December, the average high-temperature and low-temperature are 62.2°F (16.8°C) and 47.7°F (8.7°C) respectively. In September, the average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is appraised at 104°F (40°C).

What is the most humid month in Head of Island?

February and December, with an average relative humidity of 81%, are most humid months.

What is the average humidity in December?

In Head of Island, the average relative humidity in December is 81%.

How many days does it rain in December in Head of Island?

In Head of Island, in December, during 10.7 rainfall days, 1.3" (33mm) of precipitation is typically accumulated.

When it does not snow?

In Head of Island, snow does not fall in February through December.

Does it snow in December?

In Head of Island, 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 12min of daylight.

How many hours of daylight does Head of Island have in December?

In Head of Island, the average day length in December is 10h and 14min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 6:42 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 5:13 pm CST.

What is the month with the least sunshine?

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

How many hours of sunshine does Head of Island have in December?

In December, the average sunshine duration is 5.1h.

When is the lowest UV index?

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

How high is the UV index in December?

In December, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health risk from 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
Head of Island, LA

Average temperature in December - Head of Island, LA
  • Average high temperature in December: 62.2°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (59.2°F).

  • Average low temperature in December: 47.7°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (43.5°F).

Average pressure in December
Head of Island, LA

Average pressure in December - Head of Island, LA
  • Average pressure in December: 30.12"Hg

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

Average wind speed in December
Head of Island, LA

Average wind speed in December - Head of Island, LA
  • Average wind speed in December: 6.7mph

The windiest months (with the highest average wind speed) are February and April (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity in December
Head of Island, LA

Average humidity in December - Head of Island, LA
  • Average humidity in December: 81%

The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (74%).

Average rainfall in December
Head of Island, LA

Average rainfall in December - Head of Island, LA
  • Average rainfall in December: 1.3"

The wettest month (with the highest rainfall) is July (3.03").
The driest months (with the least rainfall) are March and November (0.98").

Average rainfall days in December
Head of Island, LA

Average rainfall days in December - Head of Island, LA
  • Average rainfall days in December: 10.7 days

The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is November (7.9 days).

Average snowfall in December
Head of Island, LA

Average snowfall in December - Head of Island, LA
  • Average snowfall in December: 0"

The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in December
Head of Island, LA

Average snowfall days in December - Head of Island, LA
  • Average snowfall days in December: 0 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, November and December (0 days).

Average daylight in December /
Average sunshine in December
Head of Island, LA

Average daylight in December / Average sunshine in December - Head of Island, 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: 5h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

Average sunshine days in December
Head of Island, LA

Average sunshine days in December - Head of Island, LA
  • Average sunshine days in December: 17.6 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (9.3 days).

Average UV index in December
Head of Island, LA

Average UV index in December - Head of Island, 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
Head of Island, LA

Average cloud cover in December - Head of Island, LA
  • Average cloud cover in December: 47

The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 26).

Average visibility in December
Head of Island, LA

Average visibility in December - Head of Island, LA
  • Average visibility in December: 6mi

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

Head of Island, Louisiana, USA

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