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
The start of December comes with a small reduction in the average high-temperature, subtly receding from an enjoyable 64.8°F (18.2°C) in November to a mild 57.7°F (14.3°C). During the month of December, the temperature generally drops to a low average of 43°F (6.1°C).Humidity
February and December, with an average relative humidity of 81%, are the most humid months.Rainfall
In December, the rain falls for 12.8 days. Throughout December, 3.58" (91mm) of precipitation is accumulated. In Jack, during the entire year, the rain falls for 163.6 days and collects up to 37.95" (964mm) of precipitation.Snowfall
January, February and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.3 snowfall days, it receives 0.16" (4mm) of snow. In Jack, during the entire year, snow falls for 2.2 days and aggregates up to 1.14" (29mm) of snow.Daylight
The month with the shortest days is December, with an average of 10h and 6min of daylight.On the first day of the month, sunrise is at 6:45 am and sunset at 4:57 pm. On the last day of December, sunrise is at 7:02 am and sunset at 5:08 pm CST.
Sunshine
The months with the least sunshine are February and December, with an average of 4.8h of sunshine.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In December, a regular UV index of 3 translates into these guidelines:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in Jack in December?
When does it start to snow?
What is the month with the shortest days?
What is the average length of the day in December in Jack?
When is the sunrise / sunset in December?
What are the months with the least sunshine?
How many hours of sunshine does Jack have in December?
What is the month with the lowest UV index in Jack?
What is the UV index intensity in December?
Average temperature in December
Jack, MS
- Average high temperature in December: 57.7°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (55°F).
- Average low temperature in December: 43°F
The months with the highest average low temperature are July and August (72.1°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in December
Jack, MS
- 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 (29.96"Hg).
Average wind speed in December
Jack, MS
- Average wind speed in December: 7.1mph
The windiest months (with the highest average wind speed) are February and April (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in December
Jack, MS
- 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 (70%).
Average rainfall in December
Jack, MS
- Average rainfall in December: 3.58"
The wettest month (with the highest rainfall) is August (4.21").
The driest month (with the least rainfall) is November (2.2").
Average rainfall days in December
Jack, MS
- Average rainfall days in December: 12.8 days
The months with the highest number of rainy days are July and August (19.7 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in December
Jack, MS
- Average snowfall in December: 0.16"
The month with the highest snowfall is January (0.67").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Jack, MS
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is January (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Jack, MS
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 12min).
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 June (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in December
Jack, MS
- Average sunshine days in December: 16.2 days
The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in December
Jack, MS
- Average UV index in December: 3
The months with the highest UV index are 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
Jack, MS
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in December
Jack, MS
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).
Jack, Mississippi, USA
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