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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 19°C (67°F). Expect a range that can dip as low as 3°C (38°F) and soar up to 34°C (94°F). Prepare for precipitation averaging 161 mm (6.3 in) over about 13 days, with an average humidity of around 80%.

May Temperature in Greenville

In May in Greenville, the average temperature is 19°C (67°F). The maximum can reach 34°C (94°F), while the minimum can drop as low as 3°C (38°F). This range makes Greenville an ideal destination for travelers seeking both warm days and cool evenings.

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 19°C (67°F), with highs reaching up to 34°C (94°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec313546546776797672594338
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 161 mm (6.3 in), occurring over the course of 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 161 mm (6.3 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec798113314316111098113611077963
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 80%. With an average temperature of 19°C (67°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor exploration a bit uncomfortable and sticky, yet it encourages you to seek out refreshing indoor activities or shaded spots to escape the heat.

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 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%83%80%83%82%83%79%79%88%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.
JanFebMarAprMayJunJulAugSepOctNovDec356910111199643
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 Weather0°C (32°F)79 mm (3.1 inches)84%moderate
February Weather1°C (35°F)81 mm (3.2 inches)82%moderate
March Weather8°C (46°F)133 mm (5.2 inches)84%high
April Weather12°C (55°F)143 mm (5.6 inches)83%very high
May Weather19°C (67°F)161 mm (6.3 inches)80%very high
June Weather25°C (77°F)110 mm (4.3 inches)83%extreme
July Weather26°C (79°F)98 mm (3.9 inches)82%extreme
August Weather24°C (76°F)113 mm (4.4 inches)82%very high
September Weather22°C (72°F)61 mm (2.4 inches)79%very high
October Weather15°C (59°F)107 mm (4.2 inches)79%high
November Weather6°C (43°F)79 mm (3.1 inches)88%moderate
December Weather3°C (38°F)63 mm (2.5 inches)87%moderate

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