December weather forecastDennis, MS
December
Weather in December
The first month of the winter, December, is also a fresh month in Dennis, Mississippi, with an average temperature fluctuating between 37.9°F (3.3°C) and 52°F (11.1°C).Temperature
In the transition to December, Dennis observes a minor drop in the average high-temperature, shifting from a refreshing 59.5°F (15.3°C) in November to a fresh 52°F (11.1°C). Dennis witnesses an average low-temperature of 37.9°F (3.3°C) throughout the month of December.Humidity
The most humid month is December, with an average relative humidity of 80%.Rainfall
In December, in Dennis, the rain falls for 13.2 days. Throughout December, 3.27" (83mm) of precipitation is accumulated. Throughout the year, in Dennis, there are 169.1 rainfall days, and 38.11" (968mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Dennis, Mississippi, during December, snow falls for 1.2 days and regularly aggregates up to 0.39" (10mm) of snow. Throughout the year, there are 7.3 snowfall days, and 1.85" (47mm) of snow is accumulated.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year in Dennis.On the first day of December in Dennis, sunrise is at 6:42 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 4:52 pm CST.
Sunshine
February and December, with an average of 4.6h of sunshine, are months with the least sunshine.UV index
With an average maximum UV index of 2, December is the month with the lowest UV index in Dennis, Mississippi. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 2 during December leads to these advisories:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Dennis, MS
- Average high temperature in December: 52°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (48°F).
- Average low temperature in December: 37.9°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).
Average pressure in December
Dennis, 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
Dennis, MS
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).
Average humidity in December
Dennis, 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 (72%).
Average rainfall in December
Dennis, MS
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is November (2.28").
Average rainfall days in December
Dennis, MS
- Average rainfall days in December: 13.2 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in December
Dennis, MS
- Average snowfall in December: 0.39"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Dennis, MS
- Average snowfall days in December: 1.2 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Dennis, MS
- Average daylight in December: 9h and 54min
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 36min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in December
Dennis, MS
- Average sunshine days in December: 16.3 days
The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in December
Dennis, MS
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Dennis, MS
- Average cloud cover in December: 50
The months with the most cloud cover are February and December (Cloud cover 50).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility in December
Dennis, MS
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, May and July (5mi).
