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May Weather in Greenville, United States

Last updated: June 24, 2025

In Greenville, United States, the average temperature in May hovers around 15°C (59°F). You'll experience a range of minimum temperatures dipping to -2°C (28°F), while the maximum can reach up to 34°C (93°F). Expect precipitation of about 128 mm (5.0 in) spread over 13 days, with an average humidity level of 82% that keeps the atmosphere quite moist.

May Temperature in Greenville

In May in Greenville, the average temperature is 15°C (59°F). Maximum temperatures can reach 34°C (93°F), while minimums can drop as low as -2°C (28°F). It's advisable to pack for both warm days and chilly nights while exploring this destination.

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 15°C (59°F), with highs reaching up to 34°C (93°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec252636465969747164523831
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 128 mm (5.0 in) spread over 13 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 128 mm (5.0 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec6263639012812365741161296166
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 82%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and uncomfortable for travelers.

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 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%87%82%81%78%79%80%82%87%86%
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 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 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
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-4°C (25°F)62 mm (2.4 inches)87%low
February Weather-4°C (26°F)63 mm (2.5 inches)87%moderate
March Weather2°C (36°F)63 mm (2.5 inches)86%moderate
April Weather8°C (46°F)90 mm (3.5 inches)87%very high
May Weather15°C (59°F)128 mm (5.0 inches)82%very high
June Weather21°C (69°F)123 mm (4.8 inches)81%very high
July Weather24°C (75°F)65 mm (2.6 inches)78%very high
August Weather22°C (72°F)74 mm (2.9 inches)79%very high
September Weather18°C (65°F)116 mm (4.5 inches)79%high
October Weather11°C (52°F)129 mm (5.1 inches)82%moderate
November Weather3°C (38°F)61 mm (2.4 inches)87%moderate
December Weather-1°C (31°F)66 mm (2.6 inches)86%low

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