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December Weather in Lafayette, United States

Last updated: June 24, 2025

In December, the average temperature in Lafayette, United States hovers around 2°C (35°F). Expect a wide range of temperatures, with a minimum of -24°C (-11°F) and a maximum reaching 18°C (64°F). You'll also experience an average precipitation of 62 mm (2.4 in), spread across about 9 days. The air will feel quite humid, with an average humidity level of 86%.

December Temperature in Lafayette

In December in Lafayette, the average temperature is 2°C (35°F), with maximums reaching 18°C (64°F) and minimums dropping as low as -24°C (-11°F). Be prepared for a wide range of temperatures, so pack accordingly for your trip!

December Weather in Lafayette: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Lafayette, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lafayette, December typically has an average temperature of 2°C (35°F), with highs reaching up to 18°C (64°F) and lows dropping to around -24°C (-11°F).
JanFebMarAprMayJunJulAugSepOctNovDec283142516473767469574135
Data source: Temperature data for Lafayette generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Lafayette

In Lafayette in December, the precipitation amount is 62 mm (2.4 in) over the course of 9 days.

December Precipitation Trends in Lafayette

The chart displays monthly precipitation patterns in Lafayette, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Lafayette, December typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec74771069715210099101651127562
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Lafayette

In Lafayette in December humidity is 86%. With an average temperature of 2°C (35°F), this humidity feels like a damp chill that seeps into your bones, making traveling quite uncomfortable as your clothes cling to you and the cold air cuts through any warmth you try to find.

December Average Humidity in Lafayette

This chart illustrates the average monthly humidity levels in Lafayette, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Lafayette is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%86%87%81%82%81%79%78%81%89%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Lafayette

In Lafayette in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Lafayette, you can visit Hourly UV Index in Lafayette.

Maximum UV Index Levels in Lafayette for December

The chart shows the monthly maximum UV Index (UVI) for Lafayette in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Lafayette typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098642
Data source: Lafayette December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Lafayette Compares to Other Months

Weather in Lafayette varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Lafayette, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Lafayette, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)74 mm (2.9 inches)85%moderate
February Weather-1°C (31°F)77 mm (3.0 inches)85%moderate
March Weather5°C (42°F)106 mm (4.2 inches)86%high
April Weather11°C (52°F)97 mm (3.8 inches)87%very high
May Weather18°C (64°F)152 mm (6.0 inches)81%very high
June Weather23°C (74°F)100 mm (3.9 inches)82%extreme
July Weather25°C (77°F)99 mm (3.9 inches)81%very high
August Weather23°C (74°F)101 mm (4.0 inches)79%very high
September Weather21°C (70°F)65 mm (2.6 inches)78%very high
October Weather14°C (57°F)112 mm (4.4 inches)81%high
November Weather5°C (41°F)75 mm (3.0 inches)89%moderate
December Weather2°C (35°F)62 mm (2.4 inches)86%low

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