December weather forecastSimmonsville, MS
December
Weather in December
The first month of the winter, December, is also a moderate month in Simmonsville, Mississippi, with an average temperature fluctuating between 44.6°F (7°C) and 59.7°F (15.4°C).Temperature
Simmonsville, Mississippi, observes a small decrease in the average high-temperature with the arrival of December, falling from November's enjoyable 66.6°F (19.2°C) to a mild 59.7°F (15.4°C). Nighttime temperature experiences an average drop to a chilly 44.6°F (7°C) in December.Humidity
December is the most humid month, with an average relative humidity of 81%.Rainfall
In Simmonsville, during December, the rain falls for 14.2 days and regularly aggregates up to 3.46" (88mm) of precipitation. Throughout the year, there are 174 rainfall days, and 34.29" (871mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March and December. The months with the most snowfall are January and December, with an average 0.24" (6mm) of accumulated snow.Daylight
The month with the shortest days is December, with an average of 10h and 12min of daylight.On the first day of December, sunrise is at 6:42 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 5:09 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 of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 3 in December transforms into this advice:
Take precautions - Protection against sunburn is recommended. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Simmonsville, MS
- Average high temperature in December: 59.7°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (56.8°F).
- Average low temperature in December: 44.6°F
The months with the highest average low temperature are July and August (72.7°F).
The coldest month (with the lowest average low temperature) is January (40.3°F).
Average pressure in December
Simmonsville, MS
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in December
Simmonsville, MS
- Average wind speed in December: 6.5mph
The windiest months (with the highest average wind speed) are February and April (6.8mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).
Average humidity in December
Simmonsville, MS
- Average humidity in December: 81%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Simmonsville, MS
- Average rainfall in December: 3.46"
The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is November (1.93").
Average rainfall days in December
Simmonsville, MS
- Average rainfall days in December: 14.2 days
The month with the highest number of rainy days is July (20.9 days).
The month with the least rainy days is November (9 days).
Average snowfall in December
Simmonsville, MS
- Average snowfall in December: 0.24"
The months with the highest snowfall are January and December (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Simmonsville, MS
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is January (0.5 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
Simmonsville, MS
- Average daylight in December: 10h and 12min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in December: 4h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in December
Simmonsville, MS
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is July (8.5 days).
Average UV index in December
Simmonsville, 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 and December (UV index 3).
Average cloud cover in December
Simmonsville, MS
- Average cloud cover in December: 50
The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in December
Simmonsville, MS
- Average visibility in December: 5mi
The months with the highest visibility are October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September and December (5mi).
