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May Weather in Greenville, United States

Last updated: June 24, 2025

In May, the average temperature in Greenville, United States is a pleasant 21°C (71°F). However, temperatures can vary significantly, with a minimum of 5°C (41°F) and a maximum reaching 36°C (97°F). Expect around 113 mm (4.4 in) of precipitation over 11 days, coupled with an average humidity level of 81%. Stay prepared for a mix of warmth and moisture!

May Temperature in Greenville

In May in Greenville, the average temperature is 21°C (71°F), with maximums potentially reaching 36°C (97°F) and minimums dipping as low as 5°C (41°F). This range of temperatures makes Greenville a versatile destination, perfect for both warm sunny days and cooler evenings, ensuring travelers can plan accordingly to enjoy their stay.

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 21°C (71°F), with highs reaching up to 36°C (97°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec455054637177807975665348
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 precipitation amount is 113 mm (4.4 in) over the course of 11 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 113 mm (4.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec868969991131331381611337396105
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 21°C (71°F), this humidity feels like a warm, enveloping blanket that makes traveling feel both refreshing and slightly heavy, often leading to a sticky sensation that can quickly deplete your energy.

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.
JanFebMarAprMayJunJulAugSepOctNovDec84%81%80%80%81%82%83%83%80%80%83%84%
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 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 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 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109853
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 Weather7°C (45°F)86 mm (3.4 inches)84%moderate
February Weather10°C (50°F)89 mm (3.5 inches)81%high
March Weather12°C (54°F)69 mm (2.7 inches)80%very high
April Weather17°C (63°F)99 mm (3.9 inches)80%very high
May Weather21°C (71°F)113 mm (4.4 inches)81%extreme
June Weather25°C (77°F)133 mm (5.2 inches)82%extreme
July Weather27°C (80°F)138 mm (5.4 inches)83%extreme
August Weather26°C (79°F)161 mm (6.3 inches)82%very high
September Weather24°C (75°F)133 mm (5.2 inches)80%very high
October Weather19°C (67°F)72 mm (2.9 inches)79%very high
November Weather12°C (54°F)96 mm (3.8 inches)83%moderate
December Weather9°C (49°F)105 mm (4.1 inches)84%moderate

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