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December Weather in Cortez, United States

Last updated: June 24, 2025

In December, the average temperature in Cortez, United States hovers around -3°C (27°F), with lows plummeting to -21°C (-6°F) and highs reaching up to 14°C (58°F). Expect approximately 51 mm (2.0 in) of precipitation over 7 days, while the average humidity lingers at a brisk 85%.

December Temperature in Cortez

In December in Cortez, the average temperature is -3°C (27°F), with a maximum that can reach 14°C (58°F) and a minimum that can drop as low as -21°C (-6°F). Travelers should be prepared for a wide temperature range and dress accordingly for both chilly and milder conditions.

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

The chart illustrates December temperature patterns in Cortez, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cortez, December typically has an average temperature of -3°C (27°F), with highs reaching up to 14°C (58°F) and lows dropping to around -21°C (-6°F).
JanFebMarAprMayJunJulAugSepOctNovDec253038485870747263493927
Data source: Temperature data for Cortez 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 Cortez

In Cortez in December, the precipitation amount is 51 mm (2.0 in) over a period of 7 days.

December Precipitation Trends in Cortez

The chart displays monthly precipitation patterns in Cortez, 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 Cortez, December typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec485568213212371535372751
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Cortez

In Cortez in December humidity is 85%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps through layers of clothing, making travel seem daunting and the cold air sting your skin.

December Average Humidity in Cortez

This chart illustrates the average monthly humidity levels in Cortez, 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 Cortez is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%76%69%53%40%36%44%59%74%83%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Cortez

In Cortez 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 Cortez for better planning.

Maximum UV Index Levels in Cortez for December

The chart shows the monthly maximum UV Index (UVI) for Cortez 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 Cortez typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111213121110864
Data source: Cortez 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 Cortez Compares to Other Months

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

This table compares monthly weather conditions in Cortez, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)48 mm (1.9 inches)85%moderate
February Weather-1°C (30°F)55 mm (2.2 inches)86%high
March Weather3°C (38°F)68 mm (2.7 inches)76%very high
April Weather9°C (49°F)21 mm (0.8 inches)69%extreme
May Weather14°C (58°F)32 mm (1.3 inches)53%extreme
June Weather21°C (70°F)12 mm (0.5 inches)40%extreme
July Weather23°C (74°F)37 mm (1.4 inches)36%extreme
August Weather22°C (72°F)15 mm (0.6 inches)44%extreme
September Weather17°C (64°F)35 mm (1.4 inches)59%very high
October Weather10°C (50°F)37 mm (1.4 inches)74%very high
November Weather4°C (39°F)27 mm (1.1 inches)83%high
December Weather-3°C (27°F)51 mm (2.0 inches)85%moderate

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