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 snowfall 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's arrival subtly correlates with a reduction in the average high-temperature, down from a pleasant 68.9°F (20.5°C) in November to an enjoyable 63.5°F (17.5°C). Harvey's temperature in December lowers to a consistent average of 52.5°F (11.4°C) during the nights.Humidity
February and December, with an average relative humidity of 77%, are the most humid months.Rainfall
In Harvey, Louisiana, in December, it is raining for 7.8 days, with typically 0.79" (20mm) of accumulated precipitation. In Harvey, Louisiana, during the entire year, the rain falls for 112.1 days and collects up to 9.37" (238mm) of precipitation.Snowfall
In Harvey, snow does not fall in February through December.Daylight
The month with the shortest days is December, with an average of 10h and 18min of daylight.On the first day of December in Harvey, sunrise is at 6:38 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 5:11 pm CST.
Sunshine
With an average of 5.1h of sunshine, December has the least sunshine of the year in Harvey.UV index
The month with the lowest UV index in Harvey is December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In December, a daily maximum UV index of 3 leads to the following instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Frequently asked questions
What is the temperature in December in Harvey?
What are the most humid months in Harvey?
What is the average humidity in December in Harvey?
How many days does it rain in December in Harvey?
When it does not snow in Harvey?
Does it snow in Harvey in December?
What is the month with the shortest days in Harvey?
How many hours of daylight does Harvey have in December?
When are sunrise and sunset in December in Harvey?
What is the month with the least sunshine in Harvey?
How many hours of sunshine does Harvey have in December?
What is the month with the lowest UV index in Harvey?
How high is the UV index in December in Harvey?
Average temperature in December
Harvey, LA
- Average high temperature in December: 63.5°F
The warmest months (with the highest average high temperature) are July and August (89.4°F).
The month with the lowest average high temperature is January (60.4°F).
- Average low temperature in December: 52.5°F
The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (48.6°F).
Average pressure in December
Harvey, 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
Harvey, LA
- Average wind speed in December: 9.4mph
The windiest months (with the highest average wind speed) are February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in December
Harvey, LA
- Average humidity in December: 77%
The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Harvey, LA
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is July (1.57").
The driest months (with the least rainfall) are March and April (0.43").
Average rainfall days in December
Harvey, LA
- Average rainfall days in December: 7.8 days
The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is November (4.7 days).
Average snowfall days in December
Harvey, LA
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is January (0.1 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
Harvey, 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
Harvey, LA
- Average sunshine days in December: 21.6 days
The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is August (8.9 days).
Average UV index in December
Harvey, 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
Harvey, LA
- Average cloud cover in December: 44
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 24).
Average visibility in December
Harvey, 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).
Harvey, Louisiana, USA
Weather forecast for your location
2. Allow the app to use your location
