December weather forecastMorton, MS

December

Weather in December

The first month of the winter, December, is still a refreshing month in Morton, Mississippi, with temperature in the range of an average high of 57°F (13.9°C) and an average low of 41.9°F (5.5°C).

Temperature

In December, the meteorological conditions change slightly, with the average high-temperature moving from a refreshing 64°F (17.8°C) in November to a moderate 57°F (13.9°C). In Morton, December is marked by an average low-temperature of 41.9°F (5.5°C).

Humidity

With an average relative humidity of 81%, December is the most humid month.

Rainfall

In Morton, Mississippi, in December, it is raining for 12.9 days, with typically 3.5" (89mm) of accumulated precipitation. Throughout the year, in Morton, there are 165.5 rainfall days, and 37.44" (951mm) of precipitation is accumulated.

Snowfall

January, February and December are months with snowfall. December is the first month it typically snows in Morton. Throughout December, in the average 0.3 snowfall days, it receives 0.24" (6mm) of snow. In Morton, during the entire year, snow falls for 2.5 days and aggregates up to 1.02" (26mm) of snow.

Daylight

With an average of 10h and 6min of daylight, December has the shortest days of the year in Morton, Mississippi.
On the first day of the month, sunrise is at 6:42 am and sunset at 4:53 pm. On the last day of December, in Morton, sunrise is at 6:59 am and sunset at 5:04 pm CST.

Sunshine

The average sunshine in December in Morton is 5h.

UV index

The months with the lowest UV index in Morton are January and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A maximum high UV index of 3 in December translates into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature in Morton during December is 57°F (13.9°C) and the low-temperature is 41.9°F (5.5°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in September is evaluated at 98.6°F (37°C).

With an average relative humidity of 81%, December is the most humid month.

The average relative humidity in December in Morton is 81%.

In Morton, Mississippi, during December, the rain falls for 12.9 days and regularly aggregates up to 3.5" (89mm) of precipitation.

December is the first month it typically snows in Morton, Mississippi. Throughout December, in the average 0.3 snowfall days, it receives 0.24" (6mm) of snow.

The month with the shortest days is December, with an average of 10h and 6min of daylight.

In December, the average day length in Morton is 10h and 4min.

On the first day of December in Morton, sunrise is at 6:42 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 5:04 pm CST.

In Morton, Mississippi, the average sunshine duration in December is 5h.

January and December, with an average maximum UV index of 3, are months with the lowest UV index.

The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Morton, MS

  • Average high temperature in December: 57°F

The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (54.3°F).

  • Average low temperature in December: 41.9°F

The month with the highest average low temperature is July (71.8°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).

Average pressure in December
Morton, 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
Morton, MS

  • Average wind speed in December: 7.6mph

The windiest month (with the highest average wind speed) is February (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).

Average humidity in December
Morton, 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 (70%).

Average rainfall in December
Morton, MS

  • Average rainfall in December: 3.5"

The wettest month (with the highest rainfall) is July (3.62").
The driest month (with the least rainfall) is November (2.24").

Average rainfall days in December
Morton, MS

  • Average rainfall days in December: 12.9 days

The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is October (9.2 days).

Average snowfall in December
Morton, MS

  • Average snowfall in December: 0.24"

The month with the highest snowfall is January (0.47").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in December
Morton, MS

  • Average snowfall days in December: 0.3 days

The month with the highest number of snowfall days is January (1.2 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
Morton, MS

  • Average daylight in December: 10h and 6min

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: 5h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in December
Morton, MS

  • Average sunshine days in December: 15.7 days

The month with the most sunshine days is October (20.4 days).
The month with the least sunshine days is July (9 days).

Average UV index in December
Morton, 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
Morton, MS

  • Average cloud cover in December: 47

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are September and October (Cloud cover 29).

Average visibility in December
Morton, MS

  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are May and July (5mi).