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May Weather in Grand Rapids, United States

Last updated: June 24, 2025

In May, the average temperature in Grand Rapids, United States hovers around 12°C (53°F). Temperature extremes can vary, with a minimum of -3°C (28°F) and a maximum reaching 30°C (86°F). Expect 60 mm (2.4 in) of precipitation over 9 days, contributing to an average humidity of 76%. This month offers a dynamic climate experience, perfect for those who enjoy seasonal diversity!

May Temperature in Grand Rapids

In May in Grand Rapids, the average temperature is 12°C (53°F), with maximums reaching 30°C (86°F) and minimums dropping as low as -3°C (28°F). This makes it essential for travelers to pack layers to accommodate the wide range of temperatures.

May Weather in Grand Rapids: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Grand Rapids, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grand Rapids, May typically has an average temperature of 12°C (53°F), with highs reaching up to 30°C (86°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec101027375365706659442817
Data source: Temperature data for Grand Rapids 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 Grand Rapids

In Grand Rapids in May, the total precipitation amount is 60 mm (2.4 in), occurring over a span of 9 days.

May Precipitation Trends in Grand Rapids

The chart displays monthly precipitation patterns in Grand Rapids, 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 Grand Rapids, May typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec222634616085107861051033352
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Grand Rapids

In Grand Rapids in May humidity is 76%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that settles into your bones, making outdoor activities a bit uncomfortable and necessitating layers to stay warm while exploring.

May Average Humidity in Grand Rapids

This chart illustrates the average monthly humidity levels in Grand Rapids, 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 Grand Rapids is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%93%88%83%76%76%76%77%77%82%88%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Grand Rapids

In Grand Rapids in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Grand Rapids.

Maximum UV Index Levels in Grand Rapids for May

The chart shows the monthly maximum UV Index (UVI) for Grand Rapids 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 Grand Rapids typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789987532
Data source: Grand Rapids 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 Grand Rapids Compares to Other Months

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

This table compares monthly weather conditions in Grand Rapids, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-12°C (11°F)22 mm (0.8 inches)92%low
February Weather-12°C (11°F)26 mm (1.0 inches)93%moderate
March Weather-3°C (27°F)34 mm (1.3 inches)88%moderate
April Weather3°C (38°F)61 mm (2.4 inches)83%high
May Weather12°C (53°F)60 mm (2.4 inches)76%very high
June Weather18°C (65°F)85 mm (3.4 inches)76%very high
July Weather21°C (70°F)107 mm (4.2 inches)76%very high
August Weather19°C (67°F)86 mm (3.4 inches)77%very high
September Weather15°C (59°F)105 mm (4.1 inches)77%high
October Weather7°C (44°F)103 mm (4.1 inches)82%moderate
November Weather-2°C (28°F)33 mm (1.3 inches)87%moderate
December Weather-8°C (18°F)52 mm (2.0 inches)89%low

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