May weather forecast
Grand Blanc, MI

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Weather in May

May, the last month of the spring in Grand Blanc, is a refreshing month, with an average temperature fluctuating between 47.7°F (8.7°C) and 66.2°F (19°C).

Temperature

May brings a temperature increase, with average high-temperatures moving from April's fresh 53.2°F (11.8°C) to an enjoyable 66.2°F (19°C). May nights in Grand Blanc are marked by an average temperature drop to a frosty 47.7°F (8.7°C).

Humidity

In May, the average relative humidity is 79%.

Rainfall

May is the month with the most rainfall. Rain falls for 17.8 days and accumulates 3.03" (77mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Grand Blanc. May is the last month it regularly snows in Grand Blanc. During 0.3 snowfall days, in May, Grand Blanc aggregates 0.04" (1mm) of snow. Throughout the year, there are 71.3 snowfall days, and 21.89" (556mm) of snow is accumulated.

Daylight

In May, the average length of the day in Grand Blanc, Michigan, is 14h and 40min.
On the first day of the month, sunrise is at 6:27 am and sunset at 8:35 pm. On the last day of May, in Grand Blanc, sunrise is at 5:58 am and sunset at 9:06 pm EDT.

Sunshine

The average sunshine in May in Grand Blanc is 8.3h.

UV index

The months with the highest UV index in Grand Blanc are May through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 5 in May transforms into the following instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

What is the usual temperature for Grand Blanc in May?

In May, the average high-temperature and low-temperature are 66.2°F (19°C) and 47.7°F (8.7°C) respectively.

What is the average humidity in May in Grand Blanc?

In Grand Blanc, Michigan, the average relative humidity in May is 79%.

What is the wettest month in Grand Blanc?

May is the month with the most rainfall. Rain falls for 17.8 days and accumulates 3.03" (77mm) of precipitation.

How much does it rain in Grand Blanc in May?

In Grand Blanc, Michigan, during May, the rain falls for 17.8 days and regularly aggregates up to 3.03" (77mm) of precipitation.

What is the last month it snows in Grand Blanc?

May is the last month it regularly snows in Grand Blanc, Michigan. During 0.3 snowfall days, in May, Grand Blanc aggregates 0.04" (1mm) of snow.

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

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

When is the sunrise / sunset in May in Grand Blanc?

On the first day of May, sunrise is at 6:27 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 9:06 pm EDT.

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

The average sunshine duration in May is 8.3h.

What is the month with the highest UV index in Grand Blanc?

The months with the highest UV index are May through August, with an average maximum UV index of 5.

What is the UV index reading in May in Grand Blanc?

In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Grand Blanc, MI

Average temperature in May - Grand Blanc, MI
  • Average high temperature in May: 66.2°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (27.1°F).

  • Average low temperature in May: 47.7°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

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Average pressure in May
Grand Blanc, MI

Average pressure in May - Grand Blanc, MI
  • Average pressure in May: 29.98"Hg

The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in May
Grand Blanc, MI

Average wind speed in May - Grand Blanc, MI
  • Average wind speed in May: 8.3mph

The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

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Average humidity in May
Grand Blanc, MI

Average humidity in May - Grand Blanc, MI
  • Average humidity in May: 79%

The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is April (77%).

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Average rainfall in May
Grand Blanc, MI

Average rainfall in May - Grand Blanc, MI
  • Average rainfall in May: 3.03"

The wettest month (with the highest rainfall) is May (3.03").
The driest months (with the least rainfall) are September and December (1.57").

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Average rainfall days in May
Grand Blanc, MI

Average rainfall days in May - Grand Blanc, MI
  • Average rainfall days in May: 17.8 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (5.8 days).

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Average snowfall in May
Grand Blanc, MI

Average snowfall in May - Grand Blanc, MI
  • Average snowfall in May: 0.04"

The month with the highest snowfall is February (6.14").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Grand Blanc, MI

Average snowfall days in May - Grand Blanc, MI
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Grand Blanc, 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

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Average sunshine days in May
Grand Blanc, MI

Average sunshine days in May - Grand Blanc, MI
  • Average sunshine days in May: 10.6 days

The month with the most sunshine days is September (14.2 days).
The month with the least sunshine days is January (8.4 days).

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Average UV index in May
Grand Blanc, MI

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

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in May
Grand Blanc, MI

Average cloud cover in May - Grand Blanc, MI
  • Average cloud cover in May: 43

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in May
Grand Blanc, MI

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

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

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Grand Blanc, Michigan, USA

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