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December Weather in Morris, United States

Last updated: June 24, 2025

In December, the average temperature in Morris, United States hovers around -6°C (22°F), with extremes ranging from a chilly -28°C (-17°F) to a mild 12°C (55°F). You'll likely encounter about 38 mm (1.5 in) of precipitation over 6 days, and the air carries an average humidity of 84%.

December Temperature in Morris

In December in Morris, the average temperature is -6°C (22°F). The maximum can reach 12°C (55°F), while the minimum can drop as low as -28°C (-17°F). It's advisable to prepare for a wide range of temperatures when traveling during this time.

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

The chart illustrates December temperature patterns in Morris, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Morris, December typically has an average temperature of -6°C (22°F), with highs reaching up to 12°C (55°F) and lows dropping to around -28°C (-17°F).
JanFebMarAprMayJunJulAugSepOctNovDec131330415871736963463222
Data source: Temperature data for Morris 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 Morris

In Morris in December, the total precipitation amount is 38 mm (1.5 in) spread over 6 days.

December Precipitation Trends in Morris

The chart displays monthly precipitation patterns in Morris, 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 Morris, December typically receives around 38 mm (1.5 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec19184268899110813482812538
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Morris

In Morris in December humidity is 84%. With an average temperature of -6°C (22°F), this humidity feels like an unpleasant chill that seeps into your bones, making travel feel much more uncomfortable and harsh than the temperature alone suggests.

December Average Humidity in Morris

This chart illustrates the average monthly humidity levels in Morris, 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 Morris is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%89%81%82%76%81%82%83%82%82%87%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Morris

In Morris in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Morris, you can visit Hourly UV Index in Morris.

Maximum UV Index Levels in Morris for December

The chart shows the monthly maximum UV Index (UVI) for Morris 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 Morris typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3567910997532
Data source: Morris 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 Morris Compares to Other Months

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

This table compares monthly weather conditions in Morris, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-11°C (13°F)19 mm (0.8 inches)85%moderate
February Weather-10°C (14°F)18 mm (0.7 inches)89%moderate
March Weather-1°C (31°F)42 mm (1.7 inches)81%high
April Weather5°C (41°F)68 mm (2.7 inches)82%high
May Weather14°C (58°F)89 mm (3.5 inches)76%very high
June Weather22°C (71°F)91 mm (3.6 inches)81%very high
July Weather23°C (74°F)108 mm (4.2 inches)82%very high
August Weather21°C (70°F)134 mm (5.3 inches)83%very high
September Weather17°C (63°F)82 mm (3.2 inches)82%high
October Weather8°C (47°F)81 mm (3.2 inches)82%moderate
November Weather0°C (32°F)25 mm (1.0 inches)87%moderate
December Weather-6°C (22°F)38 mm (1.5 inches)84%low

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