January Weather in Rochester, United States

Last updated: June 24, 2025

The average temperature in Rochester, United States during January hovers around -8°C (17°F). However, temperatures can dip as low as -34°C (-29°F) or rise to a maximum of 8°C (47°F). Expect about 36 mm (1.4 in) of precipitation over 6 days throughout the month, with an average humidity level of 82%. Stay warm and prepared!

January Temperature in Rochester

In January in Rochester, the average temperature is -8°C (17°F). The maximum can reach 8°C (47°F) and the minimum can be as low as -34°C (-29°F). Travelers should be prepared for cold and potentially extreme weather conditions during this time.

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 -8°C (17°F), with highs reaching up to 8°C (47°F) and lows dropping to around -34°C (-29°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 total precipitation amount is 36 mm (1.4 in), which falls over the course of 6 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 36 mm (1.4 inches) of precipitation spread over approximately 6 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 82%. With an average temperature of -8°C (17°F), this humidity feels like a biting chill that penetrates your layers, making traveling outdoors a brisk and uncomfortable experience.

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 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 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	-8°C (17°F)	36 mm (1.4 inches)	82%	moderate
February Weather	-8°C (18°F)	47 mm (1.8 inches)	84%	moderate
March Weather	1°C (34°F)	59 mm (2.3 inches)	80%	moderate
April Weather	6°C (44°F)	88 mm (3.4 inches)	81%	very high
May Weather	15°C (59°F)	143 mm (5.6 inches)	74%	very high
June Weather	21°C (71°F)	135 mm (5.3 inches)	80%	very high
July Weather	23°C (74°F)	99 mm (3.9 inches)	80%	very high
August Weather	21°C (70°F)	118 mm (4.6 inches)	77%	very high
September Weather	18°C (64°F)	122 mm (4.8 inches)	75%	very high
October Weather	9°C (48°F)	110 mm (4.3 inches)	80%	moderate
November Weather	1°C (34°F)	47 mm (1.8 inches)	87%	moderate
December Weather	-4°C (25°F)	42 mm (1.6 inches)	83%	low