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May Weather in Marion, United States

Last updated: June 24, 2025

In May, the average temperature in Marion, United States is a pleasant 14°C (57°F). Visitors can expect a minimum temperature of 3°C (38°F) and a maximum reaching up to 30°C (87°F). With an average precipitation of 98 mm (3.9 in) spread across 12 days, it's wise to prepare for some rain. Overall, the region boasts an average humidity level of 75%, contributing to its lush atmosphere.

May Temperature in Marion

In May in Marion, the average temperature is 14°C (57°F). Maximum temperatures can reach 30°C (87°F), while minimums can drop to as low as 3°C (38°F). This varied climate makes Marion an ideal destination for travelers seeking both mild and warm weather.

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

The chart illustrates May temperature patterns in Marion, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Marion, May typically has an average temperature of 14°C (57°F), with highs reaching up to 30°C (87°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec343539485767737367584637
Data source: Temperature data for Marion 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 Marion

In Marion in May, the precipitation amount is 98 mm (3.9 in) over the course of 12 days.

May Precipitation Trends in Marion

The chart displays monthly precipitation patterns in Marion, 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 Marion, May typically receives around 98 mm (3.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec829710712298901028110214393116
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Marion

In Marion in May, humidity is 75%. With an average temperature of 14°C (57°F), this humidity feels like a damp blanket enveloping you, making outdoor activities somewhat uncomfortable and travel a bit sluggish, as the air feels heavy and the heat lingers close to your skin.

May Average Humidity in Marion

This chart illustrates the average monthly humidity levels in Marion, 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 Marion is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%82%79%75%78%76%76%76%75%80%80%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Marion

In Marion 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 Marion.

Maximum UV Index Levels in Marion for May

The chart shows the monthly maximum UV Index (UVI) for Marion 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 Marion typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568910998642
Data source: Marion 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 Marion Compares to Other Months

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

This table compares monthly weather conditions in Marion, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)82 mm (3.2 inches)84%moderate
February Weather2°C (36°F)97 mm (3.8 inches)84%moderate
March Weather4°C (39°F)107 mm (4.2 inches)82%high
April Weather9°C (48°F)122 mm (4.8 inches)79%very high
May Weather14°C (57°F)98 mm (3.9 inches)75%very high
June Weather19°C (67°F)90 mm (3.5 inches)78%very high
July Weather23°C (74°F)102 mm (4.0 inches)76%very high
August Weather23°C (74°F)81 mm (3.2 inches)76%very high
September Weather19°C (67°F)102 mm (4.0 inches)75%very high
October Weather14°C (58°F)143 mm (5.6 inches)75%high
November Weather8°C (46°F)93 mm (3.7 inches)80%moderate
December Weather3°C (38°F)116 mm (4.6 inches)80%low

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