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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 10°C (50°F). During this time, temperatures can fluctuate between a chilly -5°C (24°F) and a warm 25°C (77°F). Be prepared for some rain, as 138 mm (5.5 in) of precipitation is expected over 12 days, contributing to an average humidity of 88%.

December Temperature in Lafayette

In December in Lafayette, the average temperature is 10°C (50°F), with maximums reaching 25°C (77°F) and minimums dropping as low as -5°C (24°F). Travelers should be prepared for a wide range of temperatures, making layering essential for comfort.

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 10°C (50°F), with highs reaching up to 25°C (77°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec485459647277807976685450
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 138 mm (5.5 in) spread over a duration of 12 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 138 mm (5.5 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec1081461131281111191001179810883139
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 10°C (50°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and encouraging travelers to seek cozy indoor activities instead.

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.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%81%77%77%72%73%73%85%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 reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Lafayette for better planning.

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 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478101111111110864
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 Weather9°C (48°F)108 mm (4.3 inches)85%moderate
February Weather12°C (54°F)146 mm (5.7 inches)84%high
March Weather15°C (59°F)113 mm (4.4 inches)82%very high
April Weather18°C (64°F)128 mm (5.0 inches)82%very high
May Weather22°C (72°F)111 mm (4.4 inches)81%extreme
June Weather25°C (78°F)119 mm (4.7 inches)77%extreme
July Weather27°C (80°F)100 mm (3.9 inches)77%extreme
August Weather26°C (80°F)117 mm (4.6 inches)72%extreme
September Weather25°C (77°F)98 mm (3.8 inches)73%very high
October Weather20°C (68°F)108 mm (4.2 inches)73%very high
November Weather12°C (54°F)83 mm (3.3 inches)85%high
December Weather10°C (50°F)138 mm (5.5 inches)88%moderate

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