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May Weather in Rochester, United States

Last updated: June 24, 2025

In May, the average temperature in Rochester, United States is a pleasant 19°C (66°F), with temperatures ranging from a chilly 1°C (33°F) to a warm 34°C (94°F). Be prepared for some rain, as the area experiences an average precipitation of 144 mm (5.7 in) over about 15 days. Additionally, the humidity is typically high at 80%, adding to the overall atmospheric experience of the region.

May Temperature in Rochester

In May in Rochester, the average temperature is 19°C (66°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop as low as 1°C (33°F). Make sure to pack layers to enjoy both warm days and cooler nights while exploring.

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 19°C (66°F), with highs reaching up to 34°C (94°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec293244536575777471574236
Data source: Temperature data for Rochester generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Rochester

In Rochester in May, the precipitation amount is 144 mm (5.7 in) during a span of 15 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 144 mm (5.7 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec697113313014411911288591047051
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Rochester

In Rochester in May humidity is 80%. With an average temperature of 19°C (66°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel more strenuous and sticky, which can ultimately dampen the experience of traveling.

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 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%83%80%83%82%83%79%79%88%87%
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 reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111198643
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.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)69 mm (2.7 inches)84%moderate
February Weather0°C (32°F)71 mm (2.8 inches)82%moderate
March Weather6°C (44°F)133 mm (5.2 inches)84%high
April Weather11°C (53°F)130 mm (5.1 inches)83%very high
May Weather19°C (66°F)144 mm (5.7 inches)80%very high
June Weather24°C (75°F)119 mm (4.7 inches)83%extreme
July Weather25°C (78°F)112 mm (4.4 inches)82%extreme
August Weather23°C (75°F)88 mm (3.5 inches)82%very high
September Weather22°C (71°F)59 mm (2.3 inches)79%very high
October Weather14°C (58°F)104 mm (4.1 inches)79%high
November Weather5°C (42°F)70 mm (2.8 inches)88%moderate
December Weather2°C (36°F)51 mm (2.0 inches)87%moderate

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