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December Weather in McCook, United States

Last updated: June 24, 2025

In McCook, United States, the average temperature in December hovers around 1°C (34°F). While the minimum can dip as low as -17°C (2°F), you might also experience a pleasant maximum of 24°C (75°F). Expect about 23 mm (0.9 in) of precipitation spread over 4 days, with an average humidity of 78%. Whether you’re looking for cozy winter vibes or the crispness of early spring, this month offers a unique blend of weather conditions!

December Temperature in McCook

In December in McCook, the average temperature is 1°C (34°F). Maximum temperatures can reach 24°C (75°F), while minimums can drop as low as -17°C (2°F). Pack layers to prepare for a wide range of temperatures during your travels.

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

The chart illustrates December temperature patterns in McCook, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In McCook, December typically has an average temperature of 1°C (34°F), with highs reaching up to 24°C (75°F) and lows dropping to around -17°C (2°F).
JanFebMarAprMayJunJulAugSepOctNovDec302942506175787569524234
Data source: Temperature data for McCook 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 McCook

In McCook in December, the total precipitation amount is 23 mm (0.9 in) over a span of 4 days.

December Precipitation Trends in McCook

The chart displays monthly precipitation patterns in McCook, 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 McCook, December typically receives around 23 mm (0.9 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec1817683812856686559451623
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in McCook

In McCook in December, humidity is 78%. With an average temperature of 1°C (34°F), this humidity feels like an extra layer of chill in the air, making travel uncomfortable and damp, often leading to a persistent sense of cold that can seep into your bones, leaving you wishing for a warm shelter.

December Average Humidity in McCook

This chart illustrates the average monthly humidity levels in McCook, 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 McCook is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%80%64%64%76%79%77%79%70%64%75%78%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in McCook

In McCook in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in McCook, you can check the information here.

Maximum UV Index Levels in McCook for December

The chart shows the monthly maximum UV Index (UVI) for McCook 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 McCook typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109643
Data source: McCook 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 McCook Compares to Other Months

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

This table compares monthly weather conditions in McCook, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)18 mm (0.7 inches)73%moderate
February Weather-2°C (29°F)17 mm (0.7 inches)80%moderate
March Weather6°C (42°F)68 mm (2.7 inches)64%high
April Weather10°C (50°F)38 mm (1.5 inches)64%very high
May Weather16°C (61°F)128 mm (5.0 inches)76%very high
June Weather24°C (75°F)56 mm (2.2 inches)79%extreme
July Weather26°C (78°F)68 mm (2.7 inches)77%extreme
August Weather24°C (75°F)64 mm (2.5 inches)79%very high
September Weather21°C (69°F)59 mm (2.3 inches)70%very high
October Weather11°C (52°F)45 mm (1.8 inches)64%high
November Weather6°C (42°F)15 mm (0.6 inches)75%moderate
December Weather1°C (34°F)23 mm (0.9 inches)78%moderate

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