January Weather in Roma, United States

Last updated: June 24, 2025

In January, the average temperature in Roma, United States hovers around 16°C (61°F). However, temperatures can fluctuate dramatically, dipping to a chilly -1°C (31°F) and soaring to a scorching 36°C (97°F). Expect some rain, with an average precipitation of 16 mm (0.6 in) spread over 4 days. Make sure to prepare for high humidity, as the average levels reach a sticky 83%!

January Temperature in Roma

In January in Roma, the average temperature is 16°C (61°F), with maximums reaching up to 36°C (97°F) and minimums dropping as low as -1°C (31°F). Pack accordingly to enjoy a comfortable stay, as the weather can vary significantly during this time.

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

The chart illustrates January temperature patterns in Roma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Roma, January typically has an average temperature of 16°C (61°F), with highs reaching up to 36°C (97°F) and lows dropping to around -1°C (31°F).

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

January Precipitation in Roma

In Roma in January, the precipitation amount is 16 mm (0.6 in) over a span of 4 days.

January Precipitation Trends in Roma

The chart displays monthly precipitation patterns in Roma, 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 Roma, January typically receives around 16 mm (0.6 inches) of precipitation spread over approximately 4 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Roma

In Roma in January, humidity is 83%. With an average temperature of 16°C (61°F), this humidity feels like a warm, muggy blanket wrapping around you, making travel a bit sticky and potentially uncomfortable as you navigate through the sights.

January Average Humidity in Roma

This chart illustrates the average monthly humidity levels in Roma, 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 Roma is approximately 83%, 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 Roma

In Roma in January, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Roma, you can refer to this Hourly UV Index in Roma.

Maximum UV Index Levels in Roma for January

The chart shows the monthly maximum UV Index (UVI) for Roma 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 Roma typically reaches 6, which falls under the high exposure category.

Data source: Roma 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 Roma Compares to Other Months

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

This table compares monthly weather conditions in Roma, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	16°C (61°F)	16 mm (0.6 inches)	83%	high
February Weather	18°C (65°F)	23 mm (0.9 inches)	79%	very high
March Weather	23°C (73°F)	32 mm (1.2 inches)	76%	very high
April Weather	26°C (78°F)	37 mm (1.4 inches)	77%	extreme
May Weather	29°C (84°F)	67 mm (2.6 inches)	80%	extreme
June Weather	30°C (87°F)	66 mm (2.6 inches)	73%	extreme
July Weather	31°C (88°F)	69 mm (2.7 inches)	66%	extreme
August Weather	32°C (89°F)	13 mm (0.5 inches)	65%	extreme
September Weather	29°C (84°F)	110 mm (4.3 inches)	73%	extreme
October Weather	25°C (78°F)	38 mm (1.5 inches)	76%	very high
November Weather	20°C (69°F)	36 mm (1.4 inches)	80%	high
December Weather	17°C (64°F)	20 mm (0.8 inches)	86%	high