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
December signifies a minor drop in average high-temperature, transitioning from a comfortable 60.8°F (16°C) in November to a cool 52.9°F (11.6°C). An average low-temperature of 39.6°F (4.2°C) marks the month of December in Old Union.Humidity
December is the most humid month in Old Union, Mississippi, with an average relative humidity of 80%.Rainfall
In Old Union, in December, during 12 rainfall days, 3.27" (83mm) of precipitation is typically accumulated. In Old Union, during the entire year, the rain falls for 155.2 days and collects up to 33.27" (845mm) of precipitation.Snowfall
January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.9 snowfall days, it receives 0.28" (7mm) of snow. In Old Union, during the entire year, snow falls for 5.2 days and aggregates up to 1.22" (31mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of December in Old Union, sunrise is at 6:43 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 4:55 pm CST.
Sunshine
February and December, with an average of 4.8h of sunshine, are months with the least sunshine in Old Union.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: An average maximum UV index of 3 in December leads to these recommendations:
Make use of precautions - It is urged to ward off sun damage. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Old Union?
What is the most humid month in Old Union?
What is the average humidity in December in Old Union?
How much does it rain in Old Union in December?
When does it start snowing in Old Union?
What is the month with the shortest days in Old Union?
How many hours of daylight does Old Union have in December?
What time are sunrise and sunset in December in Old Union?
What is the month with the least sunshine in Old Union?
How many hours of sunshine does Old Union have in December?
What is the month with the lowest UV index in Old Union?
What is the UV index intensity in December in Old Union?
Average temperature in December
Old Union, MS
- Average high temperature in December: 52.9°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in December: 39.6°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (34.7°F).
Average pressure in December
Old Union, 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
Old Union, MS
- Average wind speed in December: 7.2mph
The windiest month (with the highest average wind speed) is February (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in December
Old Union, MS
- Average humidity in December: 80%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Old Union, MS
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is February (3.58").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days in December
Old Union, MS
- Average rainfall days in December: 12 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in December
Old Union, MS
- Average snowfall in December: 0.28"
The months with the highest snowfall are January and February (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Old Union, MS
- Average snowfall days in December: 0.9 days
The month with the highest number of snowfall days is February (1.8 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
Old Union, MS
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in December
Old Union, MS
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in December
Old Union, MS
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Old Union, MS
- Average cloud cover in December: 49
The months with the most cloud cover are February and December (Cloud cover 49).
The months with the least cloud cover are June and September (Cloud cover 28).
Average visibility in December
Old Union, MS
- 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).
Old Union, Mississippi, USA
Weather forecast for your location
2. Allow the app to use your location