January Weather in Rome, United States

Last updated: June 24, 2025

In January, the average temperature in Rome, United States hovers around -3°C (26°F). However, be prepared for extremes, with minimum temperatures plummeting to -31°C (-23°F) and maximums reaching a cozy 14°C (57°F). The month brings about 58 mm (2.3 in) of precipitation spread over 8 days, contributing to an average humidity of 82%. Stay warm and dry!

January Temperature in Rome

In January in Rome, the average temperature is -3°C (26°F). The maximum can reach 14°C (57°F), while the minimum can drop as low as -31°C (-23°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable during their visit.

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

The chart illustrates January 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, January typically has an average temperature of -3°C (26°F), with highs reaching up to 14°C (57°F) and lows dropping to around -31°C (-23°F).

Data source: Temperature data for Rome generated using information from the Copernicus Climate Change Service.

January Precipitation in Rome

In Rome in January, the precipitation amount is 58 mm (2.3 in) over a span of 8 days.

January Precipitation Trends in Rome

The chart displays monthly precipitation patterns in Rome, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Rome, January typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Rome

In Rome in January, humidity is 82%. With an average temperature of -3°C (26°F), this humidity feels like an uncomfortable chill that makes traveling outside feel more biting and penetrating, as the cold damp air clings to your skin, intensifying the cold sensation and making even short excursions feel more daunting.

January Average Humidity in Rome

This chart illustrates the average monthly humidity levels in Rome, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Rome is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Rome

In Rome in January, 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 Rome, you can check the information here.

Maximum UV Index Levels in Rome for January

The chart shows the monthly maximum UV Index (UVI) for Rome in January, 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 January, the maximum UV index in Rome typically reaches 3, which falls under the moderate exposure category.

Data source: Rome January 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 January 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 January’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 January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (26°F)	58 mm (2.3 inches)	82%	moderate
February Weather	-2°C (28°F)	65 mm (2.6 inches)	83%	moderate
March Weather	5°C (41°F)	100 mm (3.9 inches)	84%	high
April Weather	10°C (50°F)	114 mm (4.5 inches)	85%	very high
May Weather	17°C (63°F)	162 mm (6.4 inches)	79%	very high
June Weather	23°C (74°F)	158 mm (6.2 inches)	82%	extreme
July Weather	25°C (77°F)	104 mm (4.1 inches)	80%	very high
August Weather	23°C (74°F)	70 mm (2.8 inches)	81%	very high
September Weather	21°C (69°F)	79 mm (3.1 inches)	80%	very high
October Weather	13°C (56°F)	135 mm (5.3 inches)	82%	high
November Weather	4°C (40°F)	55 mm (2.2 inches)	88%	moderate
December Weather	1°C (34°F)	52 mm (2.1 inches)	84%	low