nomadseason

December Weather in Mount Union, United States

Last updated: June 24, 2025

In December, the average temperature in Mount Union, United States hovers around 2°C (35°F). Expect chilly extremes, with minimums plunging to -14°C (8°F) and maximums reaching up to 20°C (67°F). Be prepared for a precipitation total of approximately 90 mm (3.5 in) spread over 10 days, and brace yourself for high humidity levels averaging 88%.

December Temperature in Mount Union

In December, in Mount Union, the average temperature is 2°C (35°F). The maximum can reach 20°C (67°F), while the minimum can drop as low as -14°C (8°F). Be prepared for a range of temperatures and pack accordingly for your travels.

December Weather in Mount Union: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Mount Union, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mount Union, December typically has an average temperature of 2°C (35°F), with highs reaching up to 20°C (67°F) and lows dropping to around -14°C (8°F).
JanFebMarAprMayJunJulAugSepOctNovDec303340506169757367564135
Data source: Temperature data for Mount Union 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 Mount Union

In Mount Union in December, the precipitation amount is 90 mm (3.5 in) over the course of 10 days.

December Precipitation Trends in Mount Union

The chart displays monthly precipitation patterns in Mount Union, 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 Mount Union, December typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec6310388103118104107931271107890
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Mount Union

In Mount Union in December, humidity is 88%. With an average temperature of 2°C (35°F), this humidity feels like you're wrapped in a cold, damp blanket, making outdoor activities uncomfortable and travel challenging due to the chill seeping into your bones.

December Average Humidity in Mount Union

This chart illustrates the average monthly humidity levels in Mount Union, 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 Mount Union is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%89%88%80%79%74%64%67%81%89%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Mount Union

In Mount Union 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 Mount Union, you can check the information here.

Maximum UV Index Levels in Mount Union for December

The chart shows the monthly maximum UV Index (UVI) for Mount Union 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 Mount Union typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098643
Data source: Mount Union 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 Mount Union Compares to Other Months

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

This table compares monthly weather conditions in Mount Union, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)63 mm (2.5 inches)89%moderate
February Weather1°C (34°F)103 mm (4.1 inches)90%moderate
March Weather4°C (40°F)88 mm (3.5 inches)89%high
April Weather10°C (51°F)103 mm (4.0 inches)88%very high
May Weather16°C (61°F)118 mm (4.6 inches)80%very high
June Weather21°C (70°F)104 mm (4.1 inches)79%very high
July Weather24°C (76°F)107 mm (4.2 inches)74%very high
August Weather23°C (73°F)93 mm (3.6 inches)64%very high
September Weather19°C (67°F)127 mm (5.0 inches)67%very high
October Weather13°C (56°F)110 mm (4.3 inches)81%high
November Weather5°C (41°F)78 mm (3.1 inches)89%moderate
December Weather2°C (35°F)90 mm (3.5 inches)88%moderate

Compare Mount Union's Climate with Cities Worldwide