May Weather in Rochester, United States

Last updated: June 24, 2025

In May, the average temperature in Rochester, United States hovers around 15°C (59°F). Prepare for a wide range of temperatures, as it can dip to a chilly -2°C (29°F) or soar to a hot 35°C (96°F). Expect 143 mm (5.6 in) of precipitation over 14 days, contributing to an average humidity of 74% that adds a touch of tropical feel to your experience.

May Temperature in Rochester

In May in Rochester, the average temperature is 15°C (59°F). Maximums can reach 35°C (96°F), and minimums can be as low as -2°C (29°F). Be sure to pack for both warmth and heat when traveling to Rochester this month!

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

The chart illustrates May 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, May typically has an average temperature of 15°C (59°F), with highs reaching up to 35°C (96°F) and lows dropping to around -2°C (29°F).

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

May Precipitation in Rochester

In Rochester in May, the total precipitation amount is 143 mm (5.6 in), spread over a duration of 14 days.

May Precipitation Trends in Rochester

The chart displays monthly precipitation patterns in Rochester, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Rochester, May typically receives around 143 mm (5.6 inches) of precipitation spread over approximately 14 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Rochester

In Rochester in May, humidity is 74%. With an average temperature of 15°C (59°F), this humidity feels like traveling through a warm, sticky blanket that clings to your skin, making outdoor activities a bit uncomfortable and prompting you to seek out shaded areas or cool breezes.

May Average Humidity in Rochester

This chart illustrates the average monthly humidity levels in Rochester, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Rochester is approximately 74%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Rochester

In Rochester in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Rochester.

Maximum UV Index Levels in Rochester for May

The chart shows the monthly maximum UV Index (UVI) for Rochester in May, 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 May, the maximum UV index in Rochester typically reaches 9, which falls under the very high exposure category.

Data source: Rochester May 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 May 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 May’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 May’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