May weather forecast
Grand Rapids, MI

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The vast cityscape of Grand Rapids, a moderately large town in Michigan and two visible bridges across the river
The vast cityscape of Grand Rapids, a moderately large town in Michigan and two visible bridges across the river

Weather in May

By May, Grand Rapids is a city brimming with life. The weather becomes more agreeable, enabling outdoor activities under the extended sunshine hours of 8.6 daily. Mild showers continue to drench the city occasionally, contributing to the lush, vibrant green that envelops the surroundings. The rising temperatures never fail to excite anticipation for the approaching summer, making May a charming month of change. The pleasant weather of May marks the city’s transition from the briskness of spring to the warmth of summer.

Temperature

With the onset of May, the average high-temperature slightly shifts from April's cool 54.1°F (12.3°C) to a refreshing 66.4°F (19.1°C). An average nighttime temperature of 48.7°F (9.3°C) is observed in Grand Rapids during May.

Humidity

In Grand Rapids, the average relative humidity in May is 77%.

Rainfall

May is the month with the most rainfall in Grand Rapids. Rain falls for 13 days and accumulates 1.14" (29mm) of precipitation.

Snowfall

In Grand Rapids, snow does not fall in May through October.

Daylight

In Grand Rapids, Michigan, the average length of the day in May is 14h and 40min.
On the first day of May, sunrise is at 6:35 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 9:14 pm EDT.

Sunshine

In Grand Rapids, Michigan, the average sunshine in May is 8.6h.

UV index

In May, the average daily maximum UV index in Grand Rapids is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 5 in May translates into the following instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Updated: Feb 12, 2024 | Published by: Weather U.S. | Resources

Frequently asked questions

What is the temperature in May in Grand Rapids?

The average high-temperature and low-temperature in Grand Rapids, Michigan, during May are 66.4°F (19.1°C) and 48.7°F (9.3°C) respectively.

What is the average humidity in May in Grand Rapids?

The average relative humidity in May in Grand Rapids is 77%.

What is the wettest month in Grand Rapids?

The month with the most rainfall in Grand Rapids, Michigan, is May, when the rain falls for 13 days and typically aggregates up to 1.14" (29mm) of precipitation.

How much does it rain in Grand Rapids in May?

In May, the rain falls for 13 days. Throughout May, 1.14" (29mm) of precipitation is accumulated.

When it does not snow in Grand Rapids?

In Grand Rapids, Michigan, snow does not fall in May through October.

Does it snow in Grand Rapids in May?

In May, in Grand Rapids, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does Grand Rapids have in May?

The average day length in May in Grand Rapids, Michigan, is 14h and 40min.

What time are sunrise and sunset in May in Grand Rapids?

On the first day of May, sunrise is at 6:35 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 9:14 pm EDT.

How long on average sun shines in May in Grand Rapids?

The average sunshine duration in May in Grand Rapids, Michigan, is 8.6h.

What is the UV index intensity in May in Grand Rapids?

In Grand Rapids, Michigan, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Grand Rapids, MI

Average temperature in May - Grand Rapids, MI
  • Average high temperature in May: 66.4°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (27.7°F).

  • Average low temperature in May: 48.7°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

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Average pressure in May
Grand Rapids, MI

Average pressure in May - Grand Rapids, MI
  • Average pressure in May: 29.97"Hg

The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in May
Grand Rapids, MI

Average wind speed in May - Grand Rapids, MI
  • Average wind speed in May: 8.5mph

The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in May
Grand Rapids, MI

Average humidity in May - Grand Rapids, MI
  • Average humidity in May: 77%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in May
Grand Rapids, MI

Average rainfall in May - Grand Rapids, MI
  • Average rainfall in May: 1.14"

The wettest month (with the highest rainfall) is May (1.14").
The driest month (with the least rainfall) is March (0.47").

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Average rainfall days in May
Grand Rapids, MI

Average rainfall days in May - Grand Rapids, MI
  • Average rainfall days in May: 13 days

The month with the highest number of rainy days is May (13 days).
The month with the least rainy days is February (3.8 days).

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Average snowfall in May
Grand Rapids, MI

Average snowfall in May - Grand Rapids, MI
  • Average snowfall in May: 0"

The month with the highest snowfall is January (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Grand Rapids, MI

Average snowfall days in May - Grand Rapids, MI
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Grand Rapids, MI

Average daylight in May / Average sunshine in May - Grand Rapids, MI
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).

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Average sunshine days in May
Grand Rapids, MI

Average sunshine days in May - Grand Rapids, MI
  • Average sunshine days in May: 14.6 days

The month with the most sunshine days is September (21 days).
The month with the least sunshine days is April (13.4 days).

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Average UV index in May
Grand Rapids, MI

Average UV index in May - Grand Rapids, MI
  • Average UV index in May: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in May
Grand Rapids, MI

Average cloud cover in May - Grand Rapids, MI
  • Average cloud cover in May: 42

The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in May
Grand Rapids, MI

Average visibility in May - Grand Rapids, MI
  • Average visibility in May: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).

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Grand Rapids, Michigan, USA

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