Grand Rapids
Michigan, USA
Long-term weather forecast
Long-term weather forecast

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, on a warm and cool, cloudy day
The vast cityscape of Grand Rapids, a moderately large town in Michigan, and two visible bridges across the river, on a warm and cool, cloudy day
The last month of the spring, May, is a comfortable month in Grand Rapids, Michigan, with average temperature varying between 66.4°F (19.1°C) and 48.7°F (9.3°C).

Temperature

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

Humidity

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

Rainfall

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

Snowfall

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

Daylight

The average length of the day in May is 14.7h.

Sunshine

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

UV index

In Grand Rapids, Michigan, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 5 in May transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in May in Grand Rapids?

In May, in Grand Rapids, the average high-temperature is 66.4°F (19.1°C), and the average low-temperature is 48.7°F (9.3°C).

What is the average humidity in May in Grand Rapids?

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

How much does it rain in Grand Rapids in May?

In Grand Rapids, Michigan, in May, during 13 rainfall days, 1.14" (29mm) of precipitation is typically accumulated.

What is the rainiest month in Grand Rapids?

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

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.

When it does not snow in Grand Rapids?

May through October are months without snowfall in Grand Rapids.

What is the average length of the day in May in Grand Rapids?

In Grand Rapids, the average length of the day in May is 14.7h.

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

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

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

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.
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).

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%).

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 lowest rainfall) is March (0.47").

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 lowest number of rainy days is February (3.8 days).

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 lowest snowfall are May, June, July, August, September and October (0").

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 lowest number of snowfall days are May, June, July, August and September (0 days).

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 shortest days is December (Average daylight: 9.1h).

  • Average sunshine in May: 8.6h

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

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).