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May Weather in Simpsonville, United States

Last updated: June 24, 2025

In May, the average temperature in Simpsonville, United States hovers around 21°C (71°F). However, temperatures can swing dramatically, with a minimum of 5°C (41°F) and a maximum reaching up to 35°C (96°F). Keep in mind that this month brings about 137 mm (5.4 in) of precipitation, typically spread over 11 days, and an average humidity of 83%. Prepare for a diverse climate experience!

May Temperature in Simpsonville

In May in Simpsonville, the average temperature is 21°C (71°F). Maximum temperatures can reach 35°C (96°F), while minimums can drop as low as 5°C (41°F). This makes it an ideal time for travelers seeking pleasant weather with the possibility of warm afternoons and cooler evenings.

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

The chart illustrates May temperature patterns in Simpsonville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Simpsonville, May typically has an average temperature of 21°C (71°F), with highs reaching up to 35°C (96°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec444954627076807974655147
Data source: Temperature data for Simpsonville 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 Simpsonville

In Simpsonville in May, the total precipitation amount reaches 137 mm (5.4 in) over a span of 11 days.

May Precipitation Trends in Simpsonville

The chart displays monthly precipitation patterns in Simpsonville, 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 Simpsonville, May typically receives around 137 mm (5.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec931331051211378910212813111795123
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Simpsonville

In Simpsonville 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 Simpsonville

This chart illustrates the average monthly humidity levels in Simpsonville, 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 Simpsonville is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%82%83%82%80%74%75%79%87%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Simpsonville

In Simpsonville 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 Simpsonville.

Maximum UV Index Levels in Simpsonville for May

The chart shows the monthly maximum UV Index (UVI) for Simpsonville 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 Simpsonville typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109864
Data source: Simpsonville 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 Simpsonville Compares to Other Months

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

This table compares monthly weather conditions in Simpsonville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)93 mm (3.7 inches)86%moderate
February Weather10°C (50°F)133 mm (5.2 inches)85%high
March Weather12°C (55°F)105 mm (4.1 inches)84%very high
April Weather17°C (62°F)121 mm (4.8 inches)82%very high
May Weather21°C (71°F)137 mm (5.4 inches)83%extreme
June Weather25°C (77°F)89 mm (3.5 inches)82%extreme
July Weather27°C (80°F)102 mm (4.0 inches)80%extreme
August Weather26°C (79°F)128 mm (5.0 inches)74%very high
September Weather23°C (74°F)131 mm (5.2 inches)75%very high
October Weather18°C (65°F)117 mm (4.6 inches)79%very high
November Weather11°C (51°F)95 mm (3.7 inches)87%high
December Weather8°C (47°F)123 mm (4.8 inches)87%moderate

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