December weather forecast
Port Gibson, MS

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Weather in December

December, the first month of the winter in Port Gibson, is still a mild month, with an average temperature ranging between max 58.1°F (14.5°C) and min 43.7°F (6.5°C).

Temperature

Port Gibson observes a small decrease in the average high-temperature with the arrival of December, falling from November's comfortable 65.5°F (18.6°C) to a still refreshing 58.1°F (14.5°C). During December, Port Gibson observes a consistent average nighttime temperature of 43.7°F (6.5°C).

Humidity

February and December, with an average relative humidity of 81%, are the most humid months in Port Gibson.

Rainfall

In Port Gibson, in December, it is raining for 11.2 days, with typically 1.85" (47mm) of accumulated precipitation. In Port Gibson, during the entire year, the rain falls for 141.8 days and collects up to 23.39" (594mm) 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 0.3 snowfall days, it receives 0.08" (2mm) of snow. In Port Gibson, during the entire year, snow falls for 1.9 days and aggregates up to 0.75" (19mm) of snow.

Daylight

The month with the shortest days is December, with an average of 10h and 6min of daylight.
On the first day of the month, sunrise is at 6:47 am and sunset at 4:59 pm. On the last day of December, sunrise is at 7:04 am and sunset at 5:10 pm CST.

Sunshine

The month with the least sunshine is December, with an average of 4.8h of sunshine.

UV index

The months with the lowest UV index in Port Gibson are January and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: A maximum high daily UV index of 3 during December translates into the following directions:
Undertake precautions - Guarding against sun damage is counselled. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.

Frequently asked questions

What is the average December temperature in Port Gibson?

An average high-temperature, in December, in Port Gibson, is 58.1°F (14.5°C) and the average low-temperature is 43.7°F (6.5°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, in September is evaluated at 102.2°F (39°C).

What are the most humid months?

The months with the highest humidity are February and December, with an average relative humidity of 81%.

What is the average humidity in December?

The average relative humidity in December is 81%.

How much does it rain in December?

In Port Gibson, in December, it is raining for 11.2 days, with typically 1.85" (47mm) of accumulated precipitation.

When does it start snowing?

December is the first month it typically snows. Throughout December, in the average 0.3 snowfall days, it receives 0.08" (2mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 10h and 6min of daylight.

What is the average length of the day in December?

In December, the average day length is 10h and 6min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 6:47 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 5:10 pm CST.

What is the month with the least sunshine?

With an average of 4.8h of sunshine, December has the least sunshine of the year.

How long on average sun shines in December?

In December, the average sunshine duration is 4.8h.

What is the month with the lowest UV index?

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

How high is the UV index in December?

In December, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Port Gibson, MS

Average temperature in December - Port Gibson, MS
  • Average high temperature in December: 58.1°F

The warmest month (with the highest average high temperature) is August (92.1°F).
The month with the lowest average high temperature is January (55°F).

  • Average low temperature in December: 43.7°F

The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (39.7°F).

Average pressure in December
Port Gibson, MS

Average pressure in December - Port Gibson, 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
Port Gibson, MS

Average wind speed in December - Port Gibson, MS
  • Average wind speed in December: 7.1mph

The windiest month (with the highest average wind speed) is February (7.6mph).
The calmest months (with the lowest average wind speed) are August and September (5mph).

Average humidity in December
Port Gibson, MS

Average humidity in December - Port Gibson, MS
  • Average humidity in December: 81%

The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (69%).

Average rainfall in December
Port Gibson, MS

Average rainfall in December - Port Gibson, MS
  • Average rainfall in December: 1.85"

The wettest month (with the highest rainfall) is August (2.83").
The driest month (with the least rainfall) is November (1.22").

Average rainfall days in December
Port Gibson, MS

Average rainfall days in December - Port Gibson, MS
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is August (17.4 days).
The month with the least rainy days is October (6.9 days).

Average snowfall in December
Port Gibson, MS

Average snowfall in December - Port Gibson, MS
  • Average snowfall in December: 0.08"

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

Average snowfall days in December
Port Gibson, MS

Average snowfall days in December - Port Gibson, MS
  • Average snowfall days in December: 0.3 days

The month with the highest number of snowfall days is January (0.7 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
Port Gibson, MS

Average daylight in December / Average sunshine in December - Port Gibson, MS
  • Average daylight in December: 10h and 1min

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: 4h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

Average sunshine days in December
Port Gibson, MS

Average sunshine days in December - Port Gibson, MS
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is October (22.6 days).
The month with the least sunshine days is August (11 days).

Average UV index in December
Port Gibson, MS

Average UV index in December - Port Gibson, 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
Port Gibson, MS

Average cloud cover in December - Port Gibson, MS
  • Average cloud cover in December: 48

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

Average visibility in December
Port Gibson, MS

Average visibility in December - Port Gibson, MS
  • Average visibility in December: 6mi

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

Port Gibson, Mississippi, USA

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