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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 7°C (45°F). Expect a chilly range with minimums dipping to -10°C (14°F) and maximums reaching up to 23°C (73°F). Additionally, you'll experience 154 mm (6.1 in) of precipitation over 11 days, making it a notably wet month. Keep in mind the high average humidity of 88%, which adds to the overall cool and damp atmosphere.

December Temperature in Lafayette

In December, in Lafayette, the average temperature is 7°C (45°F). The maximum can reach 23°C (73°F), and the minimum can be as low as -10°C (14°F). This diverse temperature range makes Lafayette an exciting destination for travelers seeking both cool and mild weather experiences.

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 7°C (45°F), with highs reaching up to 23°C (73°F) and lows dropping to around -10°C (14°F).
JanFebMarAprMayJunJulAugSepOctNovDec404552586976797773634844
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 154 mm (6.1 in), falling over the course of 11 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 154 mm (6.1 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec11019716515513016413213412915092154
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 88%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as you navigate through a heavy, thick atmosphere that clings to your skin.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
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 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Lafayette, you can check the information here.

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 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
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 Weather4°C (40°F)110 mm (4.3 inches)87%moderate
February Weather7°C (45°F)197 mm (7.7 inches)86%high
March Weather11°C (52°F)165 mm (6.5 inches)86%high
April Weather15°C (59°F)154 mm (6.1 inches)82%very high
May Weather21°C (70°F)130 mm (5.1 inches)82%very high
June Weather24°C (76°F)164 mm (6.5 inches)83%extreme
July Weather26°C (80°F)132 mm (5.2 inches)80%extreme
August Weather25°C (78°F)134 mm (5.3 inches)74%very high
September Weather23°C (73°F)129 mm (5.1 inches)71%very high
October Weather17°C (63°F)150 mm (5.9 inches)78%high
November Weather9°C (48°F)92 mm (3.6 inches)88%moderate
December Weather7°C (45°F)154 mm (6.1 inches)88%moderate

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