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 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
With the arrival of December, Swartz notices a mild change in the average high-temperature, sliding from November's 64.6°F (18.1°C) to a still refreshing 56.3°F (13.5°C). Swartz, during the month of December, experiences an average low-temperature of 42.6°F (5.9°C).Humidity
In Swartz, the average relative humidity in December is 81%.Rainfall
In December, the rain falls for 13.4 days. Throughout December, 3.46" (88mm) of precipitation is accumulated. In Swartz, during the entire year, the rain falls for 149.8 days and collects up to 35.51" (902mm) of precipitation.Snowfall
January through March and December are months with snowfall in Swartz. December is the first month it typically snows. Throughout December, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow. In Swartz, during the entire year, snow falls for 2.1 days and aggregates up to 0.43" (11mm) of snow.Daylight
With an average of 10h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:52 am and sunset at 5:02 pm. On the last day of December, sunrise is at 7:09 am and sunset at 5:12 pm CST.
Sunshine
The average sunshine in December is 4.9h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 3 during December translates into the following directions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Experience reduced UV exposure by about half when donning a wide-brim hat. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the average humidity in December?
How many days does it rain in December in Swartz?
When does it start snowing?
What is the month with the shortest days?
How many hours of daylight does Swartz have in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Swartz, LA
- Average high temperature in December: 56.3°F
The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is January (53.8°F).
- Average low temperature in December: 42.6°F
The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (39.4°F).
Average pressure in December
Swartz, LA
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Swartz, LA
- Average wind speed in December: 6.9mph
The windiest months (with the highest average wind speed) are March and April (7.6mph).
The calmest months (with the lowest average wind speed) are July, August and September (5.3mph).
Average humidity in December
Swartz, LA
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is October (69%).
Average rainfall in December
Swartz, LA
- Average rainfall in December: 3.46"
The wettest month (with the highest rainfall) is April (4.17").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in December
Swartz, LA
- Average rainfall days in December: 13.4 days
The month with the highest number of rainy days is March (15.2 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in December
Swartz, LA
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.2").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Swartz, LA
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is January (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Swartz, LA
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Swartz, LA
- Average sunshine days in December: 15 days
The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is February (13.2 days).
Average UV index in December
Swartz, LA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in December
Swartz, LA
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and October (Cloud cover 28).
Average visibility in December
Swartz, 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).
Swartz, Louisiana, USA
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