Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December marks a gentle change in average high-temperature, declining from November's pleasant 68.9°F (20.5°C) to an enjoyable 63.3°F (17.4°C). In Harahan Junction, in December, the average low-temperature is a fresh 52°F (11.1°C).Humidity
The most humid month is December, with an average relative humidity of 78%.Rainfall
In Harahan Junction, in December, it is raining for 7.2 days, with typically 0.71" (18mm) of accumulated precipitation. In Harahan Junction, during the entire year, the rain falls for 104.1 days and collects up to 8.39" (213mm) of precipitation.Daylight
The month with the shortest days is December, with an average of 10h and 18min of daylight.On the first day of December, sunrise is at 6:39 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 5:11 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 5.1h of sunshine.UV index
The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 3 transforms into these recommendations:
Make use of precautions - It is urged to ward off sun damage. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
What is the month with the shortest days in Harahan Junction?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Harahan Junction have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Harahan Junction, LA
- Average high temperature in December: 63.3°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (60.4°F).
- Average low temperature in December: 52°F
The month with the highest average low temperature is August (79°F).
The coldest month (with the lowest average low temperature) is January (47.8°F).
Average pressure in December
Harahan Junction, 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
Harahan Junction, LA
- Average wind speed in December: 9.3mph
The windiest months (with the highest average wind speed) are February and April (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in December
Harahan Junction, LA
- Average humidity in December: 78%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Harahan Junction, LA
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is July (1.3").
The driest month (with the least rainfall) is March (0.39").
Average rainfall days in December
Harahan Junction, LA
- Average rainfall days in December: 7.2 days
The month with the highest number of rainy days is August (14.8 days).
The month with the least rainy days is November (4.5 days).
Average daylight in December /
Average sunshine in December
Harahan Junction, LA
- Average daylight in December: 10h and 2min
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 1min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in December
Harahan Junction, LA
- Average sunshine days in December: 21.8 days
The month with the most sunshine days is November (24.6 days).
The month with the least sunshine days is August (10.3 days).
Average UV index in December
Harahan Junction, LA
- Average UV index in December: 3
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Harahan Junction, 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
Harahan Junction, 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).
Harahan Junction, Louisiana, USA
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