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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 mild 15°C (59°F). Temperatures can vary significantly, dipping to a brisk -2°C (29°F) at the low end and soaring to a warm 34°C (93°F) at the high. Expect a rather wet month with 119 mm (4.7 in) of precipitation occurring over approximately 15 days, contributing to an average humidity of 82%. Whether you're braving the chill or enjoying the warmth, be prepared for a mix of weather!

May Temperature in Palmyra

In May in Palmyra, the average temperature is 15°C (59°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as -2°C (29°F). This variability in temperature makes it essential for travelers to pack a mix of warm and cool weather clothing to enjoy their visit comfortably.

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 15°C (59°F), with highs reaching up to 34°C (93°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec272935465868737164544032
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 119 mm (4.7 in) over a span of 15 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 119 mm (4.7 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec80817611911991159110791458690
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 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and uncomfortable for travelers.

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.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
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.
JanFebMarAprMayJunJulAugSepOctNovDec24681010997532
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 Weather-3°C (27°F)80 mm (3.1 inches)90%low
February Weather-2°C (29°F)81 mm (3.2 inches)90%moderate
March Weather2°C (35°F)76 mm (3.0 inches)87%high
April Weather8°C (46°F)119 mm (4.7 inches)88%very high
May Weather15°C (59°F)119 mm (4.7 inches)82%very high
June Weather20°C (68°F)91 mm (3.6 inches)79%very high
July Weather23°C (73°F)159 mm (6.3 inches)78%very high
August Weather22°C (71°F)110 mm (4.3 inches)76%very high
September Weather18°C (65°F)79 mm (3.1 inches)78%high
October Weather12°C (54°F)145 mm (5.7 inches)84%moderate
November Weather4°C (40°F)86 mm (3.4 inches)89%moderate
December Weather0°C (32°F)90 mm (3.6 inches)86%low

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