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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 23°C (74°F). Expect a wide range, with minimums dipping to 7°C (45°F) and maximums soaring up to 36°C (97°F). Additionally, be prepared for about 120 mm (4.7 in) of precipitation spread over 10 days, accompanied by a notable average humidity of 81%.

May Temperature in Marion

In May in Marion, the average temperature is 23°C (74°F). Maximum temperatures can reach 36°C (97°F), while minimums can drop as low as 7°C (45°F). This range makes it essential for travelers to pack both light clothing for the warm days and warmer layers for the 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 23°C (74°F), with highs reaching up to 36°C (97°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec485460657479818178695551
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 120 mm (4.7 in) spread over a duration of 10 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 120 mm (4.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec1081481391481201621151298413083141
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 81%. With an average temperature of 23°C (74°F), this humidity feels like a warm, heavy blanket draped over your skin, making travel feel a bit more sluggish and requiring plenty of water breaks to stay comfortable.

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 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%81%77%77%72%73%73%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.
JanFebMarAprMayJunJulAugSepOctNovDec478101111111110864
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 Weather9°C (49°F)108 mm (4.3 inches)85%moderate
February Weather12°C (55°F)148 mm (5.8 inches)84%high
March Weather16°C (61°F)139 mm (5.5 inches)82%very high
April Weather18°C (65°F)148 mm (5.8 inches)82%very high
May Weather23°C (74°F)120 mm (4.7 inches)81%extreme
June Weather26°C (79°F)162 mm (6.4 inches)77%extreme
July Weather27°C (82°F)115 mm (4.5 inches)77%extreme
August Weather27°C (81°F)129 mm (5.1 inches)72%extreme
September Weather26°C (78°F)84 mm (3.3 inches)73%very high
October Weather21°C (70°F)130 mm (5.1 inches)73%very high
November Weather13°C (55°F)83 mm (3.3 inches)85%high
December Weather11°C (52°F)141 mm (5.6 inches)88%moderate

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