December weather forecastGreenville, MS
December
Weather in December
Greenville closes the year with December, featuring temperatures not straying far from 54.5°F (12.5°C) during the day. The return of higher humidity levels, reaching 78%, foretell the imminent arrival of the cooler winter days. Especially with lower sunlight hours, it is evident that the winter solstice is near. Despite decreased daylight, Greenville residents still enjoy ample sun-filled days before the year concludes. The end of the year also welcomes a slight uptick in wind speed as winter takes full effect.Temperature
December's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a comfortable 62.1°F (16.7°C) in November to a cool 54.5°F (12.5°C). December nights are marked by an average temperature drop to a wintry 41.9°F (5.5°C).Humidity
The months with the highest humidity are February, March and December, with an average relative humidity of 78%.Rainfall
In Greenville, Mississippi, in December, it is raining for 8.9 days, with typically 1.57" (40mm) of accumulated precipitation. Throughout the year, there are 122.3 rainfall days, and 17.64" (448mm) of precipitation is accumulated.Snowfall
In Greenville, snow does not fall in March through December.Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of December in Greenville, sunrise is at 6:50 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:07 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 reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In December, an average UV index of 3 transforms into the following instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Greenville, MS
- Average high temperature in December: 54.5°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (51.4°F).
- Average low temperature in December: 41.9°F
The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (37.6°F).
Average pressure in December
Greenville, 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 (29.95"Hg).
Average wind speed in December
Greenville, MS
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Greenville, MS
- Average humidity in December: 78%
The months with the highest relative humidity are February, March and December (78%).
The month with the lowest relative humidity is October (66%).
Average rainfall in December
Greenville, MS
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is April (1.97").
The driest month (with the least rainfall) is September (0.71").
Average rainfall days in December
Greenville, MS
- Average rainfall days in December: 8.9 days
The month with the highest number of rainy days is July (15.4 days).
The month with the least rainy days is October (7 days).
Average snowfall in December
Greenville, MS
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Greenville, MS
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (0.8 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
Greenville, MS
- Average daylight in December: 10h and 0min
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 0min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Greenville, MS
- Average sunshine days in December: 20.1 days
The month with the most sunshine days is October (22.9 days).
The month with the least sunshine days is July (13.9 days).
Average UV index in December
Greenville, MS
- 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
Greenville, MS
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in December
Greenville, 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).
