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December Weather in Cactus, United States

Last updated: June 24, 2025

In December, the average temperature in Cactus, United States hovers around 4°C (40°F), with some days bringing a chill as low as -12°C (11°F) while others can reach a warm 24°C (75°F). During this time, expect 15 mm (0.6 in) of precipitation spread over approximately 2 days. With an average humidity of 81%, it’s wise to gear up for a damp and cool atmosphere.

December Temperature in Cactus

In December in Cactus, the average temperature is 4°C (40°F). Maximum temperatures can reach 24°C (75°F), while minimums can drop as low as -12°C (11°F). Travelers should be prepared for a wide range of temperatures during this time.

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

The chart illustrates December temperature patterns in Cactus, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cactus, December typically has an average temperature of 4°C (40°F), with highs reaching up to 24°C (75°F) and lows dropping to around -12°C (11°F).
JanFebMarAprMayJunJulAugSepOctNovDec373849566676807772574740
Data source: Temperature data for Cactus 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 Cactus

In Cactus in December, the precipitation amount is 15 mm (0.6 in) over the course of 2 days.

December Precipitation Trends in Cactus

The chart displays monthly precipitation patterns in Cactus, 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 Cactus, December typically receives around 15 mm (0.6 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec161144417145406127591215
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Cactus

In Cactus in December humidity is 81%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that can make traveling quite uncomfortable, as the cold air clings uncomfortably to your skin and the moisture can quickly sap your body heat.

December Average Humidity in Cactus

This chart illustrates the average monthly humidity levels in Cactus, 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 Cactus is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%76%64%70%78%81%82%78%72%73%81%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Cactus

In Cactus 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 Cactus for better planning.

Maximum UV Index Levels in Cactus for December

The chart shows the monthly maximum UV Index (UVI) for Cactus 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 Cactus typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101112121110754
Data source: Cactus 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 Cactus Compares to Other Months

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

This table compares monthly weather conditions in Cactus, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)16 mm (0.6 inches)75%moderate
February Weather3°C (38°F)11 mm (0.4 inches)76%high
March Weather10°C (50°F)44 mm (1.7 inches)64%very high
April Weather13°C (56°F)41 mm (1.6 inches)70%very high
May Weather19°C (66°F)71 mm (2.8 inches)78%extreme
June Weather25°C (76°F)45 mm (1.8 inches)81%extreme
July Weather26°C (80°F)40 mm (1.6 inches)82%extreme
August Weather25°C (78°F)61 mm (2.4 inches)78%extreme
September Weather22°C (72°F)27 mm (1.1 inches)72%very high
October Weather14°C (57°F)59 mm (2.3 inches)73%high
November Weather8°C (47°F)12 mm (0.5 inches)80%moderate
December Weather4°C (40°F)15 mm (0.6 inches)81%moderate

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