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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 19°C (67°F). While you may experience a chilly low of 0°C (32°F), the mercury can soar to a warm 33°C (91°F). Expect 125 mm (4.9 in) of precipitation spread over 15 days, contributing to a notable average humidity of 79%. Prepare for a varied climate as you explore!

May Temperature in Simpsonville

In May in Simpsonville, the average temperature is 19°C (67°F). Maximums can reach 33°C (91°F), while minimums can drop as low as 0°C (32°F). This weather makes Simpsonville a great destination for travelers seeking a diverse climate experience.

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 19°C (67°F), with highs reaching up to 33°C (91°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec353947556774787671604541
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 precipitation amount is 125 mm (4.9 in) over a span of 15 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 125 mm (4.9 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec9114014114612516810410012310790116
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 79%. With an average temperature of 19°C (67°F), this humidity feels like a warm, enveloping blanket that makes traveling a bit more challenging, as the air is thick and can leave you feeling sluggish during outdoor adventures.

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 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%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 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 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101010108743
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 Weather2°C (35°F)91 mm (3.6 inches)87%moderate
February Weather4°C (40°F)140 mm (5.5 inches)85%moderate
March Weather9°C (48°F)141 mm (5.6 inches)86%high
April Weather13°C (56°F)145 mm (5.7 inches)84%very high
May Weather19°C (67°F)125 mm (4.9 inches)79%very high
June Weather23°C (74°F)168 mm (6.6 inches)82%very high
July Weather25°C (78°F)104 mm (4.1 inches)79%very high
August Weather24°C (76°F)100 mm (3.9 inches)70%very high
September Weather22°C (71°F)123 mm (4.8 inches)69%very high
October Weather16°C (60°F)107 mm (4.2 inches)76%high
November Weather7°C (45°F)90 mm (3.5 inches)88%moderate
December Weather5°C (41°F)116 mm (4.6 inches)87%moderate

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