December weather forecast
Lafayette, LA

A monument and trees in the tranquil Lafayette Square, Louisiana
A monument and trees in the tranquil Lafayette Square, Louisiana

Weather in December

The first month of the winter, December, is still a comfortable month in Lafayette, Louisiana, with an average temperature ranging between max 61.9°F (16.6°C) and min 48°F (8.9°C).

Temperature

In December, the average high-temperature marginally drops from an agreeable 68.4°F (20.2°C) in November to a comfortable 61.9°F (16.6°C). In December, in Lafayette, the average low-temperature is 48°F (8.9°C).

Humidity

In December, the average relative humidity is 80%.

Rainfall

In Lafayette, during December, the rain falls for 10.2 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Lafayette, during the entire year, the rain falls for 143.3 days and collects up to 17.91" (455mm) of precipitation.

Snowfall

In Lafayette, snow does not fall in February through December.

Daylight

The month with the shortest days is December, with an average of 10h and 14min of daylight.
On the first day of the month, sunrise is at 6:46 am and sunset at 5:07 pm. On the last day of December, sunrise is at 7:04 am and sunset at 5:18 pm CST.

Sunshine

The month with the least sunshine is December, with an average of 5h of sunshine.

UV index

December is the month with the lowest UV index in Lafayette, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 3 in December transform into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in December in Lafayette?

The average high-temperature, in December, is 61.9°F (16.6°C), while the average low-temperature is 48°F (8.9°C). in September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 102.2°F (39°C).

What is the average humidity in December in Lafayette?

The average relative humidity in December in Lafayette is 80%.

How much does it rain in Lafayette in December?

In Lafayette, Louisiana, during December, the rain falls for 10.2 days and regularly aggregates up to 1.1" (28mm) of precipitation.

When it does not snow in Lafayette?

February through December are months without snowfall in Lafayette.

Does it snow in Lafayette in December?

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

What is the month with the shortest days in Lafayette?

With an average of 10h and 14min of daylight, December has the shortest days of the year in Lafayette.

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

The average day length in December in Lafayette, Louisiana, is 10h and 14min.

When is the sunrise / sunset in December in Lafayette?

On the first day of December, sunrise is at 6:46 am and sunset at 5:07 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 5:18 pm CST.

What is the month with the least sunshine in Lafayette?

December has the least sunshine of the year, with an average of 5h of sunshine.

How long on average sun shines in December in Lafayette?

In December, the average sunshine duration in Lafayette, Louisiana, is 5h.

When is the lowest UV index in Lafayette?

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

What is the UV index reading in December in Lafayette?

In December, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Lafayette, LA

Average temperature in December - Lafayette, LA
  • Average high temperature in December: 61.9°F

The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is January (58.8°F).

  • Average low temperature in December: 48°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

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Average pressure in December
Lafayette, LA

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in December
Lafayette, LA

Average wind speed in December - Lafayette, LA
  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is February (8.2mph).
The calmest months (with the lowest average wind speed) are July, August and September (5.3mph).

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Average humidity in December
Lafayette, LA

Average humidity in December - Lafayette, LA
  • Average humidity in December: 80%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in December
Lafayette, LA

Average rainfall in December - Lafayette, LA
  • Average rainfall in December: 1.1"

The wettest month (with the highest rainfall) is August (2.8").
The driest month (with the least rainfall) is March (0.83").

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Average rainfall days in December
Lafayette, LA

Average rainfall days in December - Lafayette, LA
  • Average rainfall days in December: 10.2 days

The month with the highest number of rainy days is August (20 days).
The months with the least rainy days are January and November (7.8 days).

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Average snowfall days in December
Lafayette, LA

Average snowfall days in December - Lafayette, 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
Lafayette, LA

Average daylight in December / Average sunshine in December - Lafayette, LA
  • Average daylight in December: 10h and 14min

The month with the longest days is June (Average daylight: 14h and 4min).
The month with the shortest days is December (Average daylight: 10h and 14min).

  • 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 December (Average sunshine: 5h and 0min).

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Average sunshine days in December
Lafayette, LA

Average sunshine days in December - Lafayette, LA
  • Average sunshine days in December: 18.1 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is August (8 days).

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Average UV index in December
Lafayette, LA

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

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

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Average cloud cover in December
Lafayette, LA

Average cloud cover in December - Lafayette, LA
  • Average cloud cover in December: 47

The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 25).

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Average visibility in December
Lafayette, LA

Average visibility in December - Lafayette, 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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