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May Weather in Cleveland, United States

Last updated: June 24, 2025

In May, the average temperature in Cleveland, United States hovers around 21°C (71°F), with a comfortable range that can dip to a chilly 4°C (40°F) or soar to a warm 34°C (94°F). Be prepared for 113 mm (4.4 in) of precipitation spread over 11 days, and expect a relatively high average humidity of 83%. Plan your activities accordingly!

May Temperature in Cleveland

In May in Cleveland, the average temperature is 21°C (71°F). Maxima can reach up to 34°C (94°F), while minima can drop as low as 4°C (40°F). Be prepared for warm days and cool nights during your travels.

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

The chart illustrates May temperature patterns in Cleveland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cleveland, May typically has an average temperature of 21°C (71°F), with highs reaching up to 34°C (94°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec434854617176807975655146
Data source: Temperature data for Cleveland 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 Cleveland

In Cleveland in May, the precipitation amount is 113 mm (4.4 in) over the course of 11 days.

May Precipitation Trends in Cleveland

The chart displays monthly precipitation patterns in Cleveland, 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 Cleveland, May typically receives around 113 mm (4.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec951621581511131011051179312872129
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Cleveland

In Cleveland in May humidity is 83%. With an average temperature of 21°C (71°F), this humidity feels like walking through a warm mist, making travel both refreshing and slightly uncomfortable as the air clings to your skin and you find yourself needing to take frequent breaks to hydrate.

May Average Humidity in Cleveland

This chart illustrates the average monthly humidity levels in Cleveland, 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 Cleveland is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Cleveland

In Cleveland in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Cleveland.

Maximum UV Index Levels in Cleveland for May

The chart shows the monthly maximum UV Index (UVI) for Cleveland 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 Cleveland typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109753
Data source: Cleveland 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 Cleveland Compares to Other Months

Weather in Cleveland varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Cleveland, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Cleveland, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)95 mm (3.7 inches)87%moderate
February Weather9°C (48°F)162 mm (6.4 inches)87%high
March Weather12°C (54°F)158 mm (6.2 inches)85%very high
April Weather16°C (61°F)151 mm (6.0 inches)82%very high
May Weather21°C (71°F)113 mm (4.4 inches)83%extreme
June Weather25°C (77°F)101 mm (4.0 inches)82%extreme
July Weather27°C (80°F)105 mm (4.1 inches)78%extreme
August Weather26°C (79°F)117 mm (4.6 inches)67%very high
September Weather24°C (75°F)93 mm (3.7 inches)64%very high
October Weather18°C (65°F)128 mm (5.0 inches)74%high
November Weather10°C (51°F)72 mm (2.8 inches)87%moderate
December Weather8°C (47°F)129 mm (5.1 inches)88%moderate

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