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December Weather in Las Cruces, United States

Last updated: June 24, 2025

In December, the average temperature in Las Cruces, United States hovers around 8°C (47°F). Expect a range from a chilly -6°C (22°F) to a warm 23°C (73°F) during this month. With an average humidity of 82%, the air can feel quite damp, complemented by 12 mm (0.5 in) of precipitation spread over just 2 days.

December Temperature in Las Cruces

In December in Las Cruces, the average temperature is 8°C (47°F). Maximums can reach 23°C (73°F) and minimums can be as low as -6°C (22°F). Be prepared for a wide range of temperatures while traveling, so layer your clothing accordingly.

December Weather in Las Cruces: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Las Cruces, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Las Cruces, December typically has an average temperature of 8°C (47°F), with highs reaching up to 23°C (73°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec455058677583838277665546
Data source: Temperature data for Las Cruces 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 Las Cruces

In Las Cruces in December, the precipitation amount is 12 mm (0.5 in) over the course of 2 days.

December Precipitation Trends in Las Cruces

The chart displays monthly precipitation patterns in Las Cruces, 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 Las Cruces, December typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec1315163422313324211313
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Las Cruces

In Las Cruces in December humidity is 82%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration less enjoyable and requiring extra layers to stay warm and comfortable.

December Average Humidity in Las Cruces

This chart illustrates the average monthly humidity levels in Las Cruces, 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 Las Cruces is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%79%65%55%54%53%55%58%70%75%83%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Las Cruces

In Las Cruces in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Las Cruces.

Maximum UV Index Levels in Las Cruces for December

The chart shows the monthly maximum UV Index (UVI) for Las Cruces 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 Las Cruces typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5710121213121211865
Data source: Las Cruces 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 Las Cruces Compares to Other Months

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

This table compares monthly weather conditions in Las Cruces, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)13 mm (0.5 inches)79%moderate
February Weather10°C (50°F)14 mm (0.6 inches)79%high
March Weather14°C (58°F)16 mm (0.6 inches)65%very high
April Weather20°C (67°F)3 mm (0.1 inches)55%extreme
May Weather24°C (75°F)4 mm (0.2 inches)54%extreme
June Weather28°C (84°F)22 mm (0.9 inches)53%extreme
July Weather29°C (84°F)31 mm (1.2 inches)55%extreme
August Weather28°C (83°F)33 mm (1.3 inches)57%extreme
September Weather25°C (77°F)24 mm (0.9 inches)70%extreme
October Weather19°C (66°F)21 mm (0.8 inches)75%very high
November Weather13°C (56°F)13 mm (0.5 inches)83%high
December Weather8°C (47°F)12 mm (0.5 inches)82%moderate

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