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May Weather in Palmyra, United States

Last updated: June 24, 2025

In May, the average temperature in Palmyra, United States is a pleasant 20°C (69°F), but be prepared for a range that can dip to a cool 2°C (35°F) and rise to a sweltering 35°C (96°F). Expect about 100 mm (3.9 in) of precipitation spread over roughly 11 days, and keep in mind that the average humidity is a balmy 82%.

May Temperature in Palmyra

In May, in Palmyra, the average temperature is 20°C (69°F). Maximum temperatures can reach 35°C (96°F), while minimum temperatures can drop to as low as 2°C (35°F). Be prepared for a range of weather conditions while traveling!

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

The chart illustrates May temperature patterns in Palmyra, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Palmyra, May typically has an average temperature of 20°C (69°F), with highs reaching up to 35°C (96°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec394450596876827973634843
Data source: Temperature data for Palmyra 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 Palmyra

In Palmyra in May, the precipitation amount is 100 mm (3.9 in) over the course of 11 days.

May Precipitation Trends in Palmyra

The chart displays monthly precipitation patterns in Palmyra, 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 Palmyra, May typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec63976210510010364123871106890
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Palmyra

In Palmyra in May humidity is 82%. With an average temperature of 20°C (69°F), this humidity feels like a warm, sticky embrace that clings to your skin, making it necessary to stay hydrated while exploring the sights.

May Average Humidity in Palmyra

This chart illustrates the average monthly humidity levels in Palmyra, 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 Palmyra is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%84%82%83%83%79%77%75%81%87%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Palmyra

In Palmyra 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 Palmyra.

Maximum UV Index Levels in Palmyra for May

The chart shows the monthly maximum UV Index (UVI) for Palmyra 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 Palmyra typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101010108753
Data source: Palmyra 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 Palmyra Compares to Other Months

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

This table compares monthly weather conditions in Palmyra, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)63 mm (2.5 inches)84%moderate
February Weather7°C (44°F)97 mm (3.8 inches)84%high
March Weather10°C (50°F)62 mm (2.5 inches)84%high
April Weather15°C (60°F)105 mm (4.1 inches)82%very high
May Weather20°C (69°F)100 mm (3.9 inches)82%very high
June Weather24°C (76°F)103 mm (4.0 inches)83%very high
July Weather28°C (82°F)64 mm (2.5 inches)79%very high
August Weather26°C (79°F)123 mm (4.8 inches)77%very high
September Weather23°C (73°F)87 mm (3.4 inches)75%very high
October Weather17°C (64°F)110 mm (4.3 inches)81%high
November Weather9°C (49°F)68 mm (2.7 inches)87%moderate
December Weather6°C (43°F)89 mm (3.5 inches)85%moderate

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