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May Weather in Greenville, United States

Last updated: June 24, 2025

In May, the average temperature in Greenville, United States hovers around 17°C (64°F). Visitors should be prepared for a broad temperature range, with minimums dipping to -1°C (30°F) and maximums soaring up to 32°C (91°F). Expect 141 mm (5.6 in) of precipitation over approximately 15 days, contributing to a notably high average humidity of 81%.

May Temperature in Greenville

In May in Greenville, the average temperature is 17°C (64°F). The maximum can reach 32°C (91°F), and the minimum can be as low as -1°C (30°F). Be prepared for a wide range of temperatures when traveling, as you'll experience both warm days and chilly nights.

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

The chart illustrates May temperature patterns in Greenville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greenville, May typically has an average temperature of 17°C (64°F), with highs reaching up to 32°C (91°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec303342516372757368574135
Data source: Temperature data for Greenville 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 Greenville

In Greenville in May, the total precipitation amount is 141 mm (5.6 in) over a period of 15 days.

May Precipitation Trends in Greenville

The chart displays monthly precipitation patterns in Greenville, 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 Greenville, May typically receives around 141 mm (5.6 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec749711410114112710710088989282
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Greenville

In Greenville in May, humidity is 81%. With an average temperature of 17°C (64°F), this humidity feels like walking through a warm mist, enveloping you in a sticky embrace that can quickly lead to discomfort during long sightseeing excursions.

May Average Humidity in Greenville

This chart illustrates the average monthly humidity levels in Greenville, 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 Greenville is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%85%81%82%81%73%73%78%89%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Greenville

In Greenville 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 Greenville.

Maximum UV Index Levels in Greenville for May

The chart shows the monthly maximum UV Index (UVI) for Greenville 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 Greenville typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Greenville 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 Greenville Compares to Other Months

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

This table compares monthly weather conditions in Greenville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)74 mm (2.9 inches)88%moderate
February Weather0°C (33°F)97 mm (3.8 inches)88%moderate
March Weather5°C (42°F)114 mm (4.5 inches)87%high
April Weather11°C (51°F)101 mm (4.0 inches)85%very high
May Weather17°C (64°F)141 mm (5.6 inches)81%very high
June Weather22°C (72°F)127 mm (5.0 inches)82%extreme
July Weather24°C (76°F)107 mm (4.2 inches)81%very high
August Weather23°C (73°F)100 mm (3.9 inches)73%very high
September Weather20°C (69°F)88 mm (3.5 inches)73%very high
October Weather14°C (57°F)98 mm (3.9 inches)78%high
November Weather5°C (41°F)92 mm (3.6 inches)89%moderate
December Weather2°C (36°F)82 mm (3.2 inches)87%moderate

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