December weather forecast
Lafayette, IN

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Weather in December

December culminates the year with the arrival of winter, low temperatures, and brief daylight hours in Lafayette. Notable is the considerable dip in the thermometer, with high temperatures merely reaching 37.6°F (3.1°C). As a sign of the holiday season, snowfall reintroduces itself, casting a stunning white blanket over the city. As the days grow colder, people start participating in winter festivities and preparing for the new year. Light snow flurries and beautiful holiday light displays are signature December features in Lafayette.

Temperature

December in Lafayette comes with a decrease in the average high-temperature, falling from a chilly 48.2°F (9°C) in November to an icy 37.6°F (3.1°C). Lafayette temperatures generally rest at a low of 27.3°F (-2.6°C) during the December nights.

Humidity

The average relative humidity in December is 81%.

Rainfall

In Lafayette, Indiana, during December, the rain falls for 8.9 days and regularly aggregates up to 1.34" (34mm) of precipitation. In Lafayette, Indiana, during the entire year, the rain falls for 153.1 days and collects up to 22.13" (562mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Lafayette. In Lafayette, during December, snow falls for 9.1 days and regularly aggregates up to 1.73" (44mm) of snow. In Lafayette, during the entire year, snow falls for 38.6 days and aggregates up to 8.39" (213mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:51 am and sunset at 5:21 pm. On the last day of December, in Lafayette, sunrise is at 8:10 am and sunset at 5:31 pm EST.

Sunshine

The average sunshine in December in Lafayette is 4.3h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 1 in December translates into these instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
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Frequently asked questions

How cold is December in Lafayette?

Lafayette in December has an average high-temperature of 37.6°F (3.1°C) and an average low-temperature of 27.3°F (-2.6°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 87.8°F (31°C).

What is the average humidity in December in Lafayette?

The average relative humidity in December in Lafayette, Indiana, is 81%.

How much does it rain in Lafayette in December?

In Lafayette, Indiana, in December, it is raining for 8.9 days, with typically 1.34" (34mm) of accumulated precipitation.

How many days does it snow in December in Lafayette?

In Lafayette, during December, snow falls for 9.1 days and regularly aggregates up to 1.73" (44mm) of snow.

What is the month with the shortest days in Lafayette?

The month with the shortest days in Lafayette is December, with an average of 9h and 18min of daylight.

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

The average day length in December in Lafayette, Indiana, is 9h and 20min.

When is the sunrise / sunset in December in Lafayette?

On the first day of December in Lafayette, Indiana, sunrise is at 7:51 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 8:10 am and sunset at 5:31 pm EST.

How many hours of sunshine does Lafayette have in December?

The average sunshine duration in December in Lafayette is 4.3h.

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

With an average maximum UV index of 1, December is the month with the lowest UV index in Lafayette, Indiana.

How high is the UV index in December in Lafayette?

In December, the average daily maximum UV index in Lafayette, Indiana, is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe 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
Lafayette, IN

Average temperature in December - Lafayette, IN
  • Average high temperature in December: 37.6°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in December: 27.3°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure in December
Lafayette, IN

Average pressure in December - Lafayette, IN
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Lafayette, IN

Average wind speed in December - Lafayette, IN
  • Average wind speed in December: 9.6mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

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Average humidity in December
Lafayette, IN

Average humidity in December - Lafayette, IN
  • Average humidity in December: 81%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in December
Lafayette, IN

Average rainfall in December - Lafayette, IN
  • Average rainfall in December: 1.34"

The wettest months (with the highest rainfall) are April and May (2.8").
The driest month (with the least rainfall) is September (1.1").

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Average rainfall days in December
Lafayette, IN

Average rainfall days in December - Lafayette, IN
  • Average rainfall days in December: 8.9 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (6.5 days).

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Average snowfall in December
Lafayette, IN

Average snowfall in December - Lafayette, IN
  • Average snowfall in December: 1.73"

The months with the highest snowfall are January and February (2.44").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Lafayette, IN

Average snowfall days in December - Lafayette, IN
  • Average snowfall days in December: 9.1 days

The month with the highest number of snowfall days is January (11.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Lafayette, IN

Average daylight in December / Average sunshine in December - Lafayette, IN
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 2min

The months with the most sunshine are June and July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in December
Lafayette, IN

Average sunshine days in December - Lafayette, IN
  • Average sunshine days in December: 15.1 days

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is May (9.8 days).

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Average UV index in December
Lafayette, IN

Average UV index in December - Lafayette, IN
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Lafayette, IN

Average cloud cover in December - Lafayette, IN
  • Average cloud cover in December: 56

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are June and August (Cloud cover 33).

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Average visibility in December
Lafayette, IN

Average visibility in December - Lafayette, IN
  • Average visibility in December: 6mi

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

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Lafayette, Indiana, USA

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