December weather forecastHead of Island, LA
December
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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: 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: 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: 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: 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: 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: 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: 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: 10h and 12min
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 6min
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: 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: 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: 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: 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).
