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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 11°C (52°F). Expect a chilly low of -5°C (23°F), while highs can reach a pleasant 26°C (78°F). Be prepared for some rain as 141 mm (5.6 in) of precipitation falls over approximately 13 days, contributing to an average humidity of 88%.

December Temperature in Marion

In December in Marion, the average temperature is 11°C (52°F), with maximums reaching 26°C (78°F) and minimums dropping as low as -5°C (23°F). Travelers should be prepared for a wide range of temperatures 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 11°C (52°F), with highs reaching up to 26°C (78°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec485460657479818178695551
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 precipitation amount is 141 mm (5.6 in) spread over 13 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 141 mm (5.6 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec1081481391481201621151298413083141
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 11°C (52°F), this humidity feels like a heavy blanket wrapping around you, making travel uncomfortable and the air feel thick, encouraging you to seek shelter or stay hydrated as you explore.

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.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%81%77%77%72%73%73%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 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.
JanFebMarAprMayJunJulAugSepOctNovDec478101111111110864
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 Weather9°C (49°F)108 mm (4.3 inches)85%moderate
February Weather12°C (55°F)148 mm (5.8 inches)84%high
March Weather16°C (61°F)139 mm (5.5 inches)82%very high
April Weather18°C (65°F)148 mm (5.8 inches)82%very high
May Weather23°C (74°F)120 mm (4.7 inches)81%extreme
June Weather26°C (79°F)162 mm (6.4 inches)77%extreme
July Weather27°C (82°F)115 mm (4.5 inches)77%extreme
August Weather27°C (81°F)129 mm (5.1 inches)72%extreme
September Weather26°C (78°F)84 mm (3.3 inches)73%very high
October Weather21°C (70°F)130 mm (5.1 inches)73%very high
November Weather13°C (55°F)83 mm (3.3 inches)85%high
December Weather11°C (52°F)141 mm (5.6 inches)88%moderate

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