December weather forecast
Head of Island, LA

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Weather in December

The first month of the winter, December, is also an enjoyable month in Head of Island, Louisiana, with an average temperature ranging between min 47.7°F (8.7°C) and max 62.2°F (16.8°C).

Temperature

The transition into December involves a small decrease in the average high-temperature, dipping slightly from an agreeable 68.9°F (20.5°C) in November to an enjoyable 62.2°F (16.8°C). Throughout the month of December, the average temperature in Head of Island dips to a frosty 47.7°F (8.7°C) at night.

Humidity

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

Rainfall

In Head of Island, in December, it is raining for 10.7 days, with typically 1.3" (33mm) of accumulated precipitation. In Head of Island, during the entire year, the rain falls for 151.5 days and collects up to 18.62" (473mm) of precipitation.

Snowfall

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

Daylight

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

Sunshine

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

UV index

December is the month with the lowest UV index in Head of Island, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: A daily maximum UV index of 3 in December translates into the following instructions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
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Frequently asked questions

What is the average December temperature in Head of Island?

In Head of Island, 62.2°F (16.8°C) is the average high-temperature and 47.7°F (8.7°C) is the average low-temperature during December. In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is evaluated 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 in Head of Island.

What is the average humidity in December in Head of Island?

The average relative humidity in December in Head of Island, Louisiana, is 81%.

How much does it rain in Head of Island in December?

In Head of Island, in December, it is raining for 10.7 days, with typically 1.3" (33mm) of accumulated precipitation.

When it does not snow in Head of Island?

February through December are months without snowfall.

Does it snow in Head of Island 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 in Head of Island?

With an average of 10h and 12min of daylight, December has the shortest days of the year.

What is the average length of the day in December in Head of Island?

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

What time are sunrise and sunset in December in Head of Island?

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

What is the month with the least sunshine in Head of Island?

The month with the least sunshine in Head of Island, Louisiana, is December, with an average of 5.1h of sunshine.

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

The average sunshine duration in December in Head of Island is 5.1h.

What is the month with the lowest UV index in Head of Island?

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

How high is the UV index in December in Head of Island?

The average daily maximum UV index in December in Head of Island is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
Nov
December
Jan
Average high temperature
68.9°F 20.5°C
62.2°F 16.8°C
59.2°F 15.1°C
Average low temperature
51.1°F 10.6°C
47.7°F 8.7°C
43.5°F 6.4°C
Average pressure
30.12" 765mmHg
30.12" 765mmHg
30.16" 766mmHg
Average wind speed
6.3mph 10.1km/h
6.7mph 10.8km/h
6.9mph 11.1km/h
Average max. wind speed
6.8mph 10.9km/h
7.3mph 11.7km/h
7.4mph 11.9km/h
Average wind speed gusts
10.4mph 16.7km/h
11.1mph 17.9km/h
11.2mph 18km/h
Average humidity
75%
81%
78%
Average rainfall
0.98" 25mm
1.3" 33mm
1.26" 32mm
Average rainfall days
7.9
10.7
9.2
Average snowfall
0" 0mm
0" 0mm
0.04" 1mm
Average snowfall days
0
0
0.2
Average daylight
10h 4min
10h 1min
10h 3min
Average sunshine
6h 0min
5h 1min
5h 3min
Average sunshine days
20.4
17.6
19.8
Average UV index
4
3
4
Average cloud cover
34%
47%
39%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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Head of Island, Louisiana, USA

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