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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). Expect a minimum chill of -1°C (31°F) and a warm peak reaching 34°C (93°F). With 145 mm (5.7 in) of precipitation spread over 14 days, don’t forget your umbrella! The air tends to be quite humid, with an average humidity of 78%, creating a cozy atmosphere throughout the month.

May Temperature in Rochester

In May in Rochester, the average temperature is 15°C (59°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as -1°C (31°F). This suggests that travelers should be prepared for a wide range of weather conditions during their visit.

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 34°C (93°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec232537465870747266533831
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 total precipitation amount is 145 mm (5.7 in) over a span 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 145 mm (5.7 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec6055611121451048579921134750
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 78%. With an average temperature of 15°C (59°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities a bit more tiring and requiring frequent breaks for hydration as you explore the area.

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 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
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.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
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-5°C (24°F)60 mm (2.4 inches)85%moderate
February Weather-4°C (25°F)55 mm (2.2 inches)85%moderate
March Weather3°C (37°F)61 mm (2.4 inches)85%high
April Weather8°C (46°F)112 mm (4.4 inches)85%very high
May Weather15°C (59°F)145 mm (5.7 inches)78%very high
June Weather21°C (70°F)104 mm (4.1 inches)80%very high
July Weather24°C (75°F)85 mm (3.4 inches)78%very high
August Weather22°C (72°F)79 mm (3.1 inches)76%very high
September Weather19°C (66°F)92 mm (3.6 inches)79%very high
October Weather11°C (53°F)113 mm (4.4 inches)83%moderate
November Weather3°C (38°F)47 mm (1.9 inches)88%moderate
December Weather-1°C (31°F)50 mm (2.0 inches)81%low

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