December weather forecast
Terrytown, LA

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Weather in December

December, the first month of the winter in Terrytown, is still a comfortable month, with an average temperature ranging between min 52.5°F (11.4°C) and max 63.5°F (17.5°C).

Temperature

The beginning of December brings a minor change in the average high-temperature, shifting from a pleasant 68.9°F (20.5°C) in November to a comfortable 63.5°F (17.5°C). Terrytown's temperature in December lowers to a consistent average of 52.5°F (11.4°C) during the nights.

Humidity

February and December, with an average relative humidity of 77%, are the most humid months in Terrytown, Louisiana.

Rainfall

In Terrytown, during December, the rain falls for 7.8 days and regularly aggregates up to 0.79" (20mm) of precipitation. Throughout the year, there are 112.1 rainfall days, and 9.37" (238mm) of precipitation is accumulated.

Snowfall

In Terrytown, Louisiana, snow does not fall in February through December.

Daylight

With an average of 10h and 18min of daylight, December has the shortest days of the year in Terrytown.
On the first day of December, sunrise is at 6:38 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 5:11 pm CST.

Sunshine

December has the least sunshine of the year, with an average of 5.1h of sunshine.

UV index

With an average maximum UV index of 3, December is the month with the lowest UV index in Terrytown. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 3 suggests these recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation around mid-day is intense; avoid the Sun and stay safe. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What is the average December temperature in Terrytown?

Terrytown in December has an average high-temperature of 63.5°F (17.5°C) and an average low-temperature of 52.5°F (11.4°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in September is computed to be 98.6°F (37°C).

What are the most humid months in Terrytown?

February and December, with an average relative humidity of 77%, are most humid months in Terrytown, Louisiana.

What is the average humidity in December in Terrytown?

In Terrytown, the average relative humidity in December is 77%.

How many days does it rain in December in Terrytown?

In December, in Terrytown, the rain falls for 7.8 days. Throughout December, 0.79" (20mm) of precipitation is accumulated.

When it does not snow in Terrytown?

In Terrytown, Louisiana, snow does not fall in February through December.

Does it snow in Terrytown in December?

In Terrytown, Louisiana, in December, it doesn't snow. In January, it regularly snows.

What is the month with the shortest days in Terrytown?

December has the shortest days of the year, with an average of 10h and 18min of daylight.

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

The average day length in December in Terrytown, Louisiana, is 10h and 16min.

When is the sunrise / sunset in December in Terrytown?

On the first day of December, sunrise is at 6:38 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 5:11 pm CST.

What is the month with the least sunshine in Terrytown?

The month with the least sunshine in Terrytown is December, with an average of 5.1h of sunshine.

How many hours of sunshine does Terrytown have in December?

In December, the average sunshine duration in Terrytown, Louisiana, is 5.1h.

What is the month with the lowest UV index in Terrytown?

December is the month with the lowest UV index in Terrytown, Louisiana, with an average maximum UV index of 3.

What is the UV index reading in December in Terrytown?

In Terrytown, the average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Terrytown, LA

Average temperature in December - Terrytown, LA
  • Average high temperature in December: 63.5°F

The warmest months (with the highest average high temperature) are July and August (89.4°F).
The month with the lowest average high temperature is January (60.4°F).

  • Average low temperature in December: 52.5°F

The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (48.6°F).

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Average pressure in December
Terrytown, LA

Average pressure in December - Terrytown, LA
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).

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Average wind speed in December
Terrytown, LA

Average wind speed in December - Terrytown, LA
  • Average wind speed in December: 9.4mph

The windiest months (with the highest average wind speed) are February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

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Average humidity in December
Terrytown, LA

Average humidity in December - Terrytown, LA
  • Average humidity in December: 77%

The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in December
Terrytown, LA

Average rainfall in December - Terrytown, LA
  • Average rainfall in December: 0.79"

The wettest month (with the highest rainfall) is July (1.57").
The driest months (with the least rainfall) are March and April (0.43").

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Average rainfall days in December
Terrytown, LA

Average rainfall days in December - Terrytown, LA
  • Average rainfall days in December: 7.8 days

The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is November (4.7 days).

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Average snowfall days in December
Terrytown, LA

Average snowfall days in December - Terrytown, LA
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in December /
Average sunshine in December
Terrytown, LA

Average daylight in December / Average sunshine in December - Terrytown, LA
  • Average daylight in December: 10h and 2min

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in December
Terrytown, LA

Average sunshine days in December - Terrytown, LA
  • Average sunshine days in December: 21.6 days

The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is August (8.9 days).

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Average UV index in December
Terrytown, LA

Average UV index in December - Terrytown, LA
  • Average UV index in December: 3

The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in December
Terrytown, LA

Average cloud cover in December - Terrytown, LA
  • Average cloud cover in December: 44

The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 24).

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Average visibility in December
Terrytown, LA

Average visibility in December - Terrytown, LA
  • 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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Terrytown, Louisiana, USA

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