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December Weather in Metropolis, United States

Last updated: June 24, 2025

In December, the average temperature in Metropolis, United States hovers around 6°C (43°F). While you can expect a minimum chill of -13°C (9°F), the weather can also surprise you with a maximum of 23°C (74°F). Be prepared for some rain, as precipitation averages 97 mm (3.8 in) over about 8 days. Don't forget your umbrella, as the average humidity can reach a muggy 88%!

December Temperature in Metropolis

In December in Metropolis, the average temperature is 6°C (43°F). Maximums can reach 23°C (74°F), while minimums can drop as low as -13°C (9°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your travels.

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

The chart illustrates December temperature patterns in Metropolis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Metropolis, December typically has an average temperature of 6°C (43°F), with highs reaching up to 23°C (74°F) and lows dropping to around -13°C (9°F).
JanFebMarAprMayJunJulAugSepOctNovDec374050576977807874624743
Data source: Temperature data for Metropolis 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 Metropolis

In Metropolis in December, the total precipitation amount is 97 mm (3.8 in), occurring over a span of 8 days.

December Precipitation Trends in Metropolis

The chart displays monthly precipitation patterns in Metropolis, 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 Metropolis, December typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec1061401511371411029479791279397
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Metropolis

In Metropolis in December, humidity is 88%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable and prompting you to seek warm shelter frequently.

December Average Humidity in Metropolis

This chart illustrates the average monthly humidity levels in Metropolis, 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 Metropolis is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%84%80%82%83%80%76%75%75%85%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Metropolis

In Metropolis 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 Metropolis, you can check the information here.

Maximum UV Index Levels in Metropolis for December

The chart shows the monthly maximum UV Index (UVI) for Metropolis 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 Metropolis typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710111110109753
Data source: Metropolis 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 Metropolis Compares to Other Months

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

This table compares monthly weather conditions in Metropolis, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)106 mm (4.2 inches)86%moderate
February Weather5°C (41°F)140 mm (5.5 inches)84%high
March Weather10°C (50°F)151 mm (6.0 inches)84%high
April Weather14°C (58°F)137 mm (5.4 inches)80%very high
May Weather21°C (69°F)141 mm (5.5 inches)82%extreme
June Weather25°C (77°F)102 mm (4.0 inches)83%extreme
July Weather27°C (81°F)94 mm (3.7 inches)79%very high
August Weather25°C (78°F)79 mm (3.1 inches)76%very high
September Weather23°C (74°F)79 mm (3.1 inches)75%very high
October Weather16°C (62°F)127 mm (5.0 inches)74%high
November Weather8°C (47°F)93 mm (3.7 inches)85%moderate
December Weather6°C (43°F)97 mm (3.8 inches)88%moderate

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