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May Weather in Piedmont, United States

Last updated: June 24, 2025

In May, the average temperature in Piedmont, United States hovers around 10°C (50°F), with a minimum dipping to -6°C (22°F) and a maximum soaring to 29°C (85°F). Expect 130 mm (5.1 in) of precipitation over approximately 18 days, contributing to an average humidity level of 76%. Prepare for a mix of cool and warm days, along with ample moisture in the air!

May Temperature in Piedmont

In May in Piedmont, the average temperature is 10°C (50°F), with maximums reaching up to 29°C (85°F) and minimums dipping to as low as -6°C (22°F). Travelers should be prepared for a wide range of weather conditions, making layers essential for an enjoyable visit.

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

The chart illustrates May temperature patterns in Piedmont, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Piedmont, May typically has an average temperature of 10°C (50°F), with highs reaching up to 29°C (85°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec272134395064696659433629
Data source: Temperature data for Piedmont 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 Piedmont

In Piedmont in May, the total precipitation amount reaches 130 mm (5.1 in) over a span of 18 days.

May Precipitation Trends in Piedmont

The chart displays monthly precipitation patterns in Piedmont, 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 Piedmont, May typically receives around 130 mm (5.1 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec203449881301081308253652132
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Piedmont

In Piedmont in May, humidity is 76%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that seeps through your clothes, making outdoor activities quite uncomfortable and necessitating a layer of warmth for traveling.

May Average Humidity in Piedmont

This chart illustrates the average monthly humidity levels in Piedmont, 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 Piedmont is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%80%70%70%76%84%85%85%77%73%74%79%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Piedmont

In Piedmont 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 Piedmont.

Maximum UV Index Levels in Piedmont for May

The chart shows the monthly maximum UV Index (UVI) for Piedmont 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 Piedmont typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346991111108532
Data source: Piedmont 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 Piedmont Compares to Other Months

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

This table compares monthly weather conditions in Piedmont, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)20 mm (0.8 inches)77%moderate
February Weather-6°C (21°F)34 mm (1.3 inches)80%moderate
March Weather1°C (35°F)49 mm (1.9 inches)70%high
April Weather4°C (39°F)88 mm (3.5 inches)70%very high
May Weather10°C (50°F)130 mm (5.1 inches)76%very high
June Weather18°C (64°F)108 mm (4.2 inches)84%extreme
July Weather21°C (70°F)130 mm (5.1 inches)85%extreme
August Weather19°C (67°F)82 mm (3.2 inches)84%very high
September Weather15°C (59°F)53 mm (2.1 inches)77%very high
October Weather6°C (43°F)65 mm (2.6 inches)73%moderate
November Weather2°C (36°F)21 mm (0.8 inches)74%moderate
December Weather-1°C (30°F)32 mm (1.3 inches)79%low

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