nomadseason

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). While you might experience a chilly minimum of -11°C (13°F), temperatures can occasionally soar to a comfortable 23°C (73°F). Expect about 127 mm (5.0 in) of precipitation spread over 9 days, contributing to an average humidity of 87%.

December Temperature in Marion

In December, in Marion, the average temperature is 5°C (42°F). The maximum can reach 23°C (73°F), while the minimum can drop as low as -11°C (13°F). Be prepared for a wide range of temperatures when traveling during this time.

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 -11°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec384448566470747268594642
Data source: Temperature data for Marion generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Marion

In Marion in December, the precipitation amount is 127 mm (5.0 in) over a span of 9 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 127 mm (5.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec10813411416416211912214415218490127
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Marion

In Marion in December humidity is 87%. 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 enjoyable and travel less inviting as the air becomes heavy and oppressive.

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 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%82%83%82%80%74%75%79%87%87%
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 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 Marion for better planning.

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 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109864
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 Weather3°C (39°F)108 mm (4.3 inches)86%moderate
February Weather6°C (44°F)134 mm (5.3 inches)85%high
March Weather9°C (49°F)114 mm (4.5 inches)84%very high
April Weather13°C (56°F)164 mm (6.4 inches)82%very high
May Weather18°C (64°F)162 mm (6.4 inches)83%extreme
June Weather21°C (70°F)119 mm (4.7 inches)82%extreme
July Weather23°C (74°F)122 mm (4.8 inches)80%extreme
August Weather22°C (73°F)144 mm (5.7 inches)74%very high
September Weather20°C (69°F)152 mm (6.0 inches)75%very high
October Weather15°C (60°F)184 mm (7.2 inches)79%very high
November Weather8°C (46°F)90 mm (3.5 inches)87%high
December Weather5°C (42°F)127 mm (5.0 inches)87%moderate

Compare Marion's Climate with Cities Worldwide