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May Weather in Fort Mill, United States

Last updated: June 24, 2025

In May, the average temperature in Fort Mill, United States is a pleasant 22°C (72°F). Expect temperatures to vary, with a minimum of 5°C (42°F) and a maximum soaring to 36°C (97°F). Be prepared for a bit of rain, as 106 mm (4.2 in) of precipitation is expected over 10 days. With an average humidity of 83%, it’s wise to stay hydrated and enjoy the warm weather!

May Temperature in Fort Mill

In May in Fort Mill, the average temperature is 22°C (72°F), with maximums reaching 36°C (97°F) and minimums dipping as low as 5°C (42°F). This range makes it a perfect time for travelers to enjoy comfortable outdoor activities while being prepared for warm days and cooler nights.

May Weather in Fort Mill: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Fort Mill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fort Mill, May typically has an average temperature of 22°C (72°F), with highs reaching up to 36°C (97°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec445054637177817975655247
Data source: Temperature data for Fort Mill 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 Fort Mill

In Fort Mill in May, the precipitation amount is 106 mm (4.2 in) over a span of 10 days.

May Precipitation Trends in Fort Mill

The chart displays monthly precipitation patterns in Fort Mill, 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 Fort Mill, May typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec9312089104106791011141288790124
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Fort Mill

In Fort Mill in May humidity is 83%. With average temperature 22°C (72°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities challenging and prompting travelers to seek shade or frequent stops for hydration.

May Average Humidity in Fort Mill

This chart illustrates the average monthly humidity levels in Fort Mill, 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 Fort Mill 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 Fort Mill

In Fort Mill 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 Fort Mill.

Maximum UV Index Levels in Fort Mill for May

The chart shows the monthly maximum UV Index (UVI) for Fort Mill 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 Fort Mill typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810101111109853
Data source: Fort Mill 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 Fort Mill Compares to Other Months

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

This table compares monthly weather conditions in Fort Mill, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)93 mm (3.7 inches)86%moderate
February Weather10°C (50°F)120 mm (4.7 inches)85%high
March Weather12°C (55°F)89 mm (3.5 inches)84%very high
April Weather17°C (63°F)104 mm (4.1 inches)82%very high
May Weather22°C (72°F)106 mm (4.2 inches)83%very high
June Weather25°C (77°F)79 mm (3.1 inches)82%extreme
July Weather27°C (81°F)101 mm (4.0 inches)80%extreme
August Weather26°C (79°F)114 mm (4.5 inches)74%very high
September Weather24°C (75°F)128 mm (5.0 inches)75%very high
October Weather19°C (66°F)87 mm (3.4 inches)79%very high
November Weather11°C (52°F)90 mm (3.5 inches)87%moderate
December Weather9°C (48°F)124 mm (4.9 inches)87%moderate

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