December weather forecast
Somerville, MS

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Weather in December

The first month of the winter, December, is still a cool month in Somerville, Mississippi, with temperature in the range of an average high of 53.4°F (11.9°C) and an average low of 41°F (5°C).

Temperature

The commencement of December indicates a gentle shift in the average high-temperature, receding from November's enjoyable 61.7°F (16.5°C) to a cool 53.4°F (11.9°C). An average temperature of 41°F (5°C) marks the nights in Somerville in December.

Humidity

The months with the highest humidity in Somerville are February, March and December, with an average relative humidity of 78%.

Rainfall

In December, in Somerville, the rain falls for 12.3 days. Throughout December, 4.25" (108mm) of precipitation is accumulated. Throughout the year, there are 161.1 rainfall days, and 42.24" (1073mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In Somerville, in December, during 0.3 snowfall days, 0.04" (1mm) of snow is typically accumulated. In Somerville, Mississippi, during the entire year, snow falls for 3.3 days and aggregates up to 1.38" (35mm) of snow.

Daylight

December has the shortest days of the year, with an average of 10h and 0min of daylight.
On the first day of the month, sunrise is at 6:48 am and sunset at 4:52 pm. On the last day of December, in Somerville, Mississippi, sunrise is at 7:05 am and sunset at 5:02 pm CST.

Sunshine

The average sunshine in December is 4.9h.

UV index

The months with the lowest UV index in Somerville, Mississippi, are January, February and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 3 in December translates into this advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
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Frequently asked questions

What is the usual temperature for Somerville in December?

In December, the average high-temperature and low-temperature in Somerville are 53.4°F (11.9°C) and 41°F (5°C) respectively. In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is evaluated at 95°F (35°C).

What is the most humid month in Somerville?

February, March and December, with an average relative humidity of 78%, are most humid months in Somerville.

What is the average humidity in December in Somerville?

The average relative humidity in December in Somerville is 78%.

How much does it rain in Somerville in December?

In December, in Somerville, the rain falls for 12.3 days. Throughout December, 4.25" (108mm) of precipitation is accumulated.

How many days does it snow in December in Somerville?

In Somerville, during December, snow falls for 0.3 days and regularly aggregates up to 0.04" (1mm) of snow.

What is the month with the shortest days in Somerville?

With an average of 10h and 0min of daylight, December has the shortest days of the year in Somerville.

What is the average length of the day in December in Somerville?

The average day length in December is 9h and 57min.

When is the sunrise / sunset in December in Somerville?

In December, on the first day of the month, sunrise is at 6:48 am and sunset at 4:52 pm. On the last day of the month, in Somerville, sunrise is at 7:05 am and sunset at 5:02 pm CST.

How long on average sun shines in December in Somerville?

In Somerville, the average sunshine duration in December is 4.9h.

When is the lowest UV index in Somerville?

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

What is the UV index intensity in December in Somerville?

In December, the average daily maximum UV index in Somerville, Mississippi, is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
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
Somerville, MS

Average temperature in December - Somerville, MS
  • Average high temperature in December: 53.4°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (50.2°F).

  • Average low temperature in December: 41°F

The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).

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Average pressure in December
Somerville, MS

Average pressure in December - Somerville, 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).

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Average wind speed in December
Somerville, MS

Average wind speed in December - Somerville, MS
  • Average wind speed in December: 8.6mph

The windiest month (with the highest average wind speed) is February (9.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in December
Somerville, MS

Average humidity in December - Somerville, 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 (67%).

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Average rainfall in December
Somerville, MS

Average rainfall in December - Somerville, MS
  • Average rainfall in December: 4.25"

The wettest month (with the highest rainfall) is April (4.72").
The driest month (with the least rainfall) is September (1.97").

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Average rainfall days in December
Somerville, MS

Average rainfall days in December - Somerville, MS
  • Average rainfall days in December: 12.3 days

The months with the highest number of rainy days are July and August (17.6 days).
The month with the least rainy days is October (9.3 days).

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Average snowfall in December
Somerville, MS

Average snowfall in December - Somerville, MS
  • Average snowfall in December: 0.04"

The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Somerville, MS

Average snowfall days in December - Somerville, MS
  • Average snowfall days in December: 0.3 days

The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Somerville, MS

Average daylight in December / Average sunshine in December - Somerville, MS
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 4h and 5min

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).

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Average sunshine days in December
Somerville, MS

Average sunshine days in December - Somerville, MS
  • Average sunshine days in December: 16.4 days

The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is August (11.1 days).

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Average UV index in December
Somerville, MS

Average UV index in December - Somerville, 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, February and December (UV index 3).

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Average cloud cover in December
Somerville, MS

Average cloud cover in December - Somerville, 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).

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Average visibility in December
Somerville, MS

Average visibility in December - Somerville, 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).

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Somerville, Mississippi, USA

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