January Weather in Rome, United States

Last updated: June 24, 2025

In January, the average temperature in Rome, United States hovers around -5°C (23°F), with extremes varying from a chilly -27°C (-17°F) to a mild 17°C (62°F). During this month, expect approximately 109 mm (4.3 in) of precipitation spread across 15 days, contributing to an average humidity level of 90%. Stay warm and be prepared for the wet conditions!

January Temperature in Rome

In January in Rome, the average temperature is -5°C (23°F). Maximums can reach 17°C (62°F), while minimums can plummet to -27°C (-17°F). Prepare for a wide range of temperatures if you plan to travel during this time.

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 -5°C (23°F), with highs reaching up to 17°C (62°F) and lows dropping to around -27°C (-17°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 109 mm (4.3 in) spread over 15 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 109 mm (4.3 inches) of precipitation spread over approximately 15 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 90%. With an average temperature of -5°C (23°F), this humidity feels like walking through an icy mist, making it challenging to stay warm while traveling as your clothes cling to your skin, and every breath feels damp and heavy in the frigid air.

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 90%, 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	-5°C (23°F)	109 mm (4.3 inches)	90%	moderate
February Weather	-3°C (26°F)	119 mm (4.7 inches)	90%	moderate
March Weather	0°C (33°F)	107 mm (4.2 inches)	87%	high
April Weather	7°C (45°F)	138 mm (5.4 inches)	88%	very high
May Weather	14°C (58°F)	140 mm (5.5 inches)	82%	very high
June Weather	19°C (66°F)	124 mm (4.9 inches)	79%	very high
July Weather	22°C (71°F)	175 mm (6.9 inches)	78%	very high
August Weather	21°C (69°F)	128 mm (5.0 inches)	76%	very high
September Weather	17°C (62°F)	96 mm (3.8 inches)	78%	very high
October Weather	11°C (52°F)	188 mm (7.4 inches)	84%	high
November Weather	3°C (37°F)	132 mm (5.2 inches)	89%	moderate
December Weather	-2°C (29°F)	131 mm (5.1 inches)	86%	low