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December Weather in Marion, United States

Last updated: June 24, 2025

In December, the average temperature in Marion, United States hovers around 5°C (42°F), with a minimum dipping to -14°C (7°F) and a maximum soaring to 23°C (73°F). Expect about 88 mm (3.4 in) of precipitation over 8 days, accompanied by a high average humidity of 88%. Prepare for a month of varied weather!

December Temperature in Marion

In December in Marion, the average temperature is 5°C (42°F), with maximums reaching up to 23°C (73°F) and minimums dropping as low as -14°C (7°F). This wide temperature range suggests that travelers should be prepared for both mild and cold conditions during their visit.

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

The chart illustrates December temperature patterns in Marion, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Marion, December typically has an average temperature of 5°C (42°F), with highs reaching up to 23°C (73°F) and lows dropping to around -14°C (7°F).
JanFebMarAprMayJunJulAugSepOctNovDec363949576977807773614641
Data source: Temperature data for Marion 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 Marion

In Marion in December, the total precipitation amount reaches 88 mm (3.4 in) over the course of 8 days.

December Precipitation Trends in Marion

The chart displays monthly precipitation patterns in Marion, 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 Marion, December typically receives around 88 mm (3.4 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec981181411421381089381741149488
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Marion

In Marion in December humidity is 88%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less appealing and leading you to seek warmth indoors instead.

December Average Humidity in Marion

This chart illustrates the average monthly humidity levels in Marion, 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 Marion 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 Marion

In Marion 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 Marion, you can check the information here.

Maximum UV Index Levels in Marion for December

The chart shows the monthly maximum UV Index (UVI) for Marion 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 Marion typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35710111110109753
Data source: Marion 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 Marion Compares to Other Months

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

This table compares monthly weather conditions in Marion, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)98 mm (3.9 inches)86%moderate
February Weather4°C (39°F)118 mm (4.7 inches)84%moderate
March Weather10°C (49°F)141 mm (5.6 inches)84%high
April Weather14°C (57°F)142 mm (5.6 inches)80%very high
May Weather20°C (69°F)138 mm (5.4 inches)82%extreme
June Weather25°C (77°F)108 mm (4.2 inches)83%extreme
July Weather27°C (81°F)92 mm (3.6 inches)79%very high
August Weather25°C (78°F)81 mm (3.2 inches)76%very high
September Weather23°C (74°F)74 mm (2.9 inches)75%very high
October Weather16°C (61°F)114 mm (4.5 inches)74%high
November Weather8°C (46°F)94 mm (3.7 inches)85%moderate
December Weather5°C (42°F)88 mm (3.4 inches)88%moderate

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