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May Weather in Marion, United States

Last updated: June 24, 2025

In Marion, United States, the average temperature in May hovers around 21°C (69°F), creating a pleasantly mild atmosphere. However, temperatures can vary significantly, with minimums dropping to 4°C (39°F) and maximums soaring to 35°C (95°F). Be prepared for some rain, as 116 mm (4.6 in) of precipitation is expected over 13 days. With an average humidity of 82%, it's a great idea to stay hydrated while enjoying the beautiful surroundings!

May Temperature in Marion

In May in Marion, the average temperature is 21°C (69°F). Maximum temperatures can reach 35°C (95°F), and the minimum can drop to as low as 4°C (39°F). This makes it an ideal time for travelers to enjoy a variety of outdoor activities, while being prepared for both warmth and cooler evenings.

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 21°C (69°F), with highs reaching up to 35°C (95°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec374150576977817874624643
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 total precipitation amount reaches 116 mm (4.6 in) over the course of 13 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 116 mm (4.6 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec9914213013711611996928811091106
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 82%. With an average temperature of 21°C (69°F), this humidity feels like a sweltering embrace, making outdoor activities feel more strenuous and prompting travelers to seek shade and cooling breezes.

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 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%84%80%82%83%80%76%75%75%85%88%
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 reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, 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 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710111110109753
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 Weather3°C (37°F)99 mm (3.9 inches)86%moderate
February Weather5°C (41°F)142 mm (5.6 inches)84%high
March Weather10°C (50°F)130 mm (5.1 inches)84%high
April Weather14°C (58°F)137 mm (5.4 inches)80%very high
May Weather21°C (69°F)116 mm (4.6 inches)82%extreme
June Weather25°C (77°F)119 mm (4.7 inches)83%extreme
July Weather27°C (81°F)96 mm (3.8 inches)79%very high
August Weather25°C (78°F)92 mm (3.6 inches)76%very high
September Weather23°C (74°F)88 mm (3.5 inches)75%very high
October Weather17°C (62°F)110 mm (4.3 inches)74%high
November Weather8°C (47°F)91 mm (3.6 inches)85%moderate
December Weather6°C (43°F)106 mm (4.2 inches)88%moderate

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