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December Weather in Rome, United States

Last updated: June 24, 2025

The average temperature in Rome, United States during December hovers around -4°C (26°F), with a minimum dipping as low as -27°C (-17°F) and a maximum reaching up to 16°C (61°F). Expect precipitation of 49 mm (1.9 in) spread across 7 days, with a notably high average humidity of 87%. Stay warm and dry!

December Temperature in Rome

In December in Rome, the average temperature is -4°C (26°F). The maximum can reach 16°C (61°F) and the minimum can be as low as -27°C (-17°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates December temperature patterns in Rome, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rome, December typically has an average temperature of -4°C (26°F), with highs reaching up to 16°C (61°F) and lows dropping to around -27°C (-17°F).
JanFebMarAprMayJunJulAugSepOctNovDec191933435869736963493425
Data source: Temperature data for Rome 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 Rome

In Rome in December, the precipitation amount is 49 mm (1.9 in) over the course of 7 days.

December Precipitation Trends in Rome

The chart displays monthly precipitation patterns in Rome, 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 Rome, December typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec385261951121081161241061065149
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Rome

In Rome in December humidity is 87%. With average temperature -4°C (26°F), this humidity feels like an icy blanket enveloping you, making outdoor activities challenging and rendering those brisk air moments difficult to bear, as the cold moisture seeps into your clothing and chills you to the bone.

December Average Humidity in Rome

This chart illustrates the average monthly humidity levels in Rome, 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 Rome is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%90%87%84%77%75%75%73%78%84%89%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Rome

In Rome 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 Rome, you can visit Hourly UV Index in Rome.

Maximum UV Index Levels in Rome for December

The chart shows the monthly maximum UV Index (UVI) for Rome 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 Rome typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
Data source: Rome 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 Rome Compares to Other Months

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

This table compares monthly weather conditions in Rome, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (19°F)38 mm (1.5 inches)89%low
February Weather-7°C (19°F)52 mm (2.0 inches)90%moderate
March Weather1°C (33°F)61 mm (2.4 inches)87%moderate
April Weather6°C (44°F)95 mm (3.7 inches)84%very high
May Weather14°C (58°F)112 mm (4.4 inches)77%very high
June Weather20°C (69°F)108 mm (4.3 inches)75%very high
July Weather23°C (73°F)116 mm (4.6 inches)74%very high
August Weather21°C (70°F)124 mm (4.9 inches)73%very high
September Weather17°C (63°F)106 mm (4.2 inches)78%high
October Weather9°C (49°F)106 mm (4.2 inches)84%moderate
November Weather1°C (34°F)51 mm (2.0 inches)89%moderate
December Weather-4°C (26°F)49 mm (1.9 inches)87%low

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