January Weather in Rochester, United States

Last updated: June 24, 2025

In Rochester, United States, the average temperature in January sits at a chilly -1°C (30°F). During this time, temperatures can drop as low as -22°C (-7°F) or soar to a surprising 21°C (70°F). Expect around 95 mm (3.7 in) of precipitation spread over 12 days, contributing to an average humidity of 88%. Stay warm and prepare for wet weather!

January Temperature in Rochester

In January in Rochester, the average temperature is -1°C (30°F), with maximums reaching 21°C (70°F) and minimums plummeting to -22°C (-7°F). Travelers should be prepared for a wide range of temperatures, from chilly to surprisingly warm, making it essential to pack accordingly.

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

The chart illustrates January temperature patterns in Rochester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rochester, January typically has an average temperature of -1°C (30°F), with highs reaching up to 21°C (70°F) and lows dropping to around -22°C (-7°F).

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

January Precipitation in Rochester

In Rochester in January, the precipitation amount is 95 mm (3.7 in) over the course of 12 days.

January Precipitation Trends in Rochester

The chart displays monthly precipitation patterns in Rochester, 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 Rochester, January typically receives around 95 mm (3.7 inches) of precipitation spread over approximately 12 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 Rochester

In Rochester in January humidity is 88%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that penetrates through your layers, making travel uncomfortable as every gust of wind becomes a sharp reminder of the cold and damp air surrounding you.

January Average Humidity in Rochester

This chart illustrates the average monthly humidity levels in Rochester, 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 Rochester is approximately 88%, 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 Rochester

In Rochester 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 Rochester, you can check the information here.

Maximum UV Index Levels in Rochester for January

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

Data source: Rochester 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 Rochester Compares to Other Months

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

This table compares monthly weather conditions in Rochester, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	95 mm (3.7 inches)	88%	moderate
February Weather	1°C (34°F)	113 mm (4.5 inches)	88%	moderate
March Weather	5°C (41°F)	103 mm (4.1 inches)	87%	high
April Weather	10°C (51°F)	133 mm (5.2 inches)	87%	very high
May Weather	16°C (62°F)	136 mm (5.4 inches)	81%	very high
June Weather	21°C (70°F)	136 mm (5.3 inches)	83%	very high
July Weather	24°C (75°F)	135 mm (5.3 inches)	82%	very high
August Weather	22°C (73°F)	88 mm (3.5 inches)	76%	very high
September Weather	19°C (67°F)	117 mm (4.6 inches)	77%	very high
October Weather	14°C (57°F)	124 mm (4.9 inches)	82%	high
November Weather	5°C (42°F)	97 mm (3.8 inches)	89%	moderate
December Weather	2°C (36°F)	99 mm (3.9 inches)	86%	low