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December Weather in Montecillos, Mexico

Last updated: August 27, 2025

In December, the average temperature in Montecillos, Mexico hovers around 12°C (54°F), offering a mild climate. Temperatures can dip as low as -4°C (25°F) at night, while daytime highs can reach up to 25°C (77°F). Expect a precipitation amount of 18 mm (0.7 in) spread across 5 days, and enjoy the refreshingly high average humidity of 91% that adds to the area's unique atmosphere.

December Temperature in Montecillos

In December in Montecillos, the average temperature is 12°C (54°F). Maximum temperatures can reach 25°C (77°F), while minimums can drop as low as -4°C (25°F). Be prepared for a diverse range of weather conditions when traveling during this time.

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

The chart illustrates December temperature patterns in Montecillos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Montecillos, December typically has an average temperature of 12°C (54°F), with highs reaching up to 25°C (77°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec535659636563626362605653
Data source: Temperature data for Montecillos 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 Montecillos

In Montecillos in December, the precipitation amount is 18 mm (0.7 in) spread over a duration of 5 days.

December Precipitation Trends in Montecillos

The chart displays monthly precipitation patterns in Montecillos, 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 Montecillos, December typically receives around 18 mm (0.7 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec26254057871871451892121635118
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Montecillos

In Montecillos in December, humidity is 91%. With an average temperature of 12°C (54°F), this humidity feels like a damp blanket wrapping around you, making even short walks feel heavy and sluggish, which can be quite challenging for travelers looking to explore the area comfortably.

December Average Humidity in Montecillos

This chart illustrates the average monthly humidity levels in Montecillos, 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 Montecillos is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%86%83%80%82%79%72%74%84%92%91%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Montecillos

In Montecillos in December, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Montecillos.

Maximum UV Index Levels in Montecillos for December

The chart shows the monthly maximum UV Index (UVI) for Montecillos 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 Montecillos typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec811131414141414131298
Data source: Montecillos 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 Montecillos Compares to Other Months

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

This table compares monthly weather conditions in Montecillos, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (53°F)26 mm (1.0 inches)88%very high
February Weather13°C (57°F)25 mm (1.0 inches)86%extreme
March Weather15°C (60°F)40 mm (1.6 inches)83%extreme
April Weather17°C (63°F)57 mm (2.2 inches)80%extreme
May Weather18°C (65°F)87 mm (3.4 inches)82%extreme
June Weather17°C (64°F)187 mm (7.4 inches)79%extreme
July Weather17°C (63°F)145 mm (5.7 inches)72%extreme
August Weather17°C (63°F)189 mm (7.4 inches)74%extreme
September Weather17°C (62°F)212 mm (8.3 inches)84%extreme
October Weather15°C (60°F)163 mm (6.4 inches)92%extreme
November Weather13°C (56°F)51 mm (2.0 inches)91%very high
December Weather12°C (54°F)18 mm (0.7 inches)91%very high

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