May weather forecast and climate
Grand Rapids, MI

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

May, the last month of the spring, in Grand Rapids, is a comfortable month, with average temperature varying between 66.4°F (19.1°C) and 48.7°F (9.3°C).

Temperature

In Grand Rapids, the average high-temperature rises, from a fresh 54.1°F (12.3°C) in April, to a comfortable 66.4°F (19.1°C). In May, the average low-temperature is 48.7°F (9.3°C).

Humidity

In May, the average relative humidity 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, Michigan, snow does not fall in May through October.

Daylight

The average length of the day in Grand Rapids is 14.7h.

Sunshine

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

UV index

The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 5 in May transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in May in Grand Rapids?

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

What is the wettest month in Grand Rapids?

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

How many days does it rain in May in Grand Rapids?

In Grand Rapids, in May, during 13 rainfall days, 1.14" (29mm) of precipitation is typically 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, 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 length of the day in May in Grand Rapids, Michigan, is 14.7h.

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

The average sunshine in May is 8.6h.

How high is the UV index in May in Grand Rapids?

The average daily maximum UV index in May in Grand Rapids, Michigan, is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.

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"

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

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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").
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).
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: 14.7h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in May: 8.6h

The month with the most sunshine is July (Average sunshine: 10.3h).
The month with the least sunshine is January (Average sunshine: 2.3h).

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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

Months with the highest UV index are June, July and August (UV index 6).
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

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

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