January Weather in Rochester, United States

Last updated: June 24, 2025

In January, the average temperature in Rochester, United States hovers around -2°C (28°F). Expect a chilly range, with minimum temperatures plummeting to -28°C (-18°F) and maximum highs reaching up to 18°C (65°F). Rainfall is noticeable, with an average precipitation amount of 75 mm (2.9 in) spread over 7 days. Don't forget, the atmosphere is quite humid, with an average humidity level of 85%!

January Temperature in Rochester

In January in Rochester, the average temperature is -2°C (28°F), with maximums that can reach 18°C (65°F) and minimums dropping as low as -28°C (-18°F). Travelers should be prepared for a wide range of temperatures, making layering clothing essential for the unpredictable weather.

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 -2°C (28°F), with highs reaching up to 18°C (65°F) and lows dropping to around -28°C (-18°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 75 mm (2.9 in) over a span of 7 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 75 mm (2.9 inches) of precipitation spread over approximately 7 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 Rochester

In Rochester in January, humidity is 85%. With an average temperature of -2°C (28°F), this humidity feels like an icy grip that clings uncomfortably to your skin, making every step feel heavier and hastening the chill that seeps into your bones, discouraging long outdoor excursions and leaving you yearning for warmth and shelter.

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 85%, 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	-2°C (28°F)	75 mm (2.9 inches)	85%	moderate
February Weather	-1°C (30°F)	77 mm (3.0 inches)	85%	moderate
March Weather	5°C (41°F)	102 mm (4.0 inches)	86%	high
April Weather	10°C (50°F)	99 mm (3.9 inches)	87%	very high
May Weather	17°C (63°F)	155 mm (6.1 inches)	81%	very high
June Weather	23°C (73°F)	112 mm (4.4 inches)	82%	very high
July Weather	24°C (76°F)	111 mm (4.4 inches)	81%	very high
August Weather	23°C (73°F)	104 mm (4.1 inches)	79%	very high
September Weather	20°C (68°F)	67 mm (2.6 inches)	78%	very high
October Weather	13°C (56°F)	110 mm (4.3 inches)	81%	high
November Weather	5°C (41°F)	79 mm (3.1 inches)	89%	moderate
December Weather	1°C (35°F)	65 mm (2.5 inches)	86%	low