May weather forecast
Sumner, MI

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Weather in May

The last month of the spring, May, is a refreshing month in Sumner, Michigan, with an average temperature fluctuating between 47.7°F (8.7°C) and 65.8°F (18.8°C).

Temperature

The transition to May introduces an increase in the average high-temperature, shifting from a fresh 52.9°F (11.6°C) in April to a refreshing 65.8°F (18.8°C). Sumner's average low-temperature during May nights is observed to be a chilly 47.7°F (8.7°C).

Humidity

In May, the average relative humidity is 77%.

Rainfall

The month with the most rainfall in Sumner is May, when the rain falls for 15.9 days and typically aggregates up to 3.03" (77mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In May, the average length of the day in Sumner is 14h and 43min.
On the first day of May in Sumner, sunrise is at 6:31 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 9:12 pm EDT.

Sunshine

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

UV index

The months with the highest UV index in Sumner are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: In May, the maximum UV index of 5 translates into these guidelines:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
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Frequently asked questions

What is the average May temperature in Sumner?

Sumner in May has an average high-temperature of 65.8°F (18.8°C) and an average low-temperature of 47.7°F (8.7°C).

What is the average humidity in May in Sumner?

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

What is the wettest month in Sumner?

The month with the most rainfall in Sumner is May, when the rain falls for 15.9 days and typically aggregates up to 3.03" (77mm) of precipitation.

How many days does it rain in May in Sumner?

In Sumner, Michigan, during May, the rain falls for 15.9 days and regularly aggregates up to 3.03" (77mm) of precipitation.

When it does not snow in Sumner?

May through September are months without snowfall in Sumner.

Does it snow in Sumner in May?

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

What is the average length of the day in May in Sumner?

In Sumner, Michigan, the average day length in May is 14h and 43min.

When is the sunrise / sunset in May in Sumner?

In May, on the first day of the month, sunrise is at 6:31 am and sunset at 8:41 pm. On the last day of the month, in Sumner, Michigan, sunrise is at 6:01 am and sunset at 9:12 pm EDT.

How many hours of sunshine does Sumner have in May?

In Sumner, the average sunshine duration in May is 8.6h.

What is the month with the highest UV index in Sumner?

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

How high is the UV index in May in Sumner?

The average daily maximum UV index in May in Sumner is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to 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
Sumner, MI

Average temperature in May - Sumner, MI
  • Average high temperature in May: 65.8°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (26.8°F).

  • Average low temperature in May: 47.7°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

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Average pressure in May
Sumner, MI

Average pressure in May - Sumner, 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 (29.92"Hg).

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Average wind speed in May
Sumner, MI

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

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

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Average humidity in May
Sumner, MI

Average humidity in May - Sumner, MI
  • Average humidity in May: 77%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in May
Sumner, MI

Average rainfall in May - Sumner, MI
  • Average rainfall in May: 3.03"

The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is February (1.26").

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Average rainfall days in May
Sumner, MI

Average rainfall days in May - Sumner, MI
  • Average rainfall days in May: 15.9 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is February (5.3 days).

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Average snowfall in May
Sumner, MI

Average snowfall in May - Sumner, MI
  • Average snowfall in May: 0"

The month with the highest snowfall is January (5.91").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Sumner, MI

Average snowfall days in May - Sumner, MI
  • Average snowfall days in May: 0.2 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
Sumner, MI

Average daylight in May / Average sunshine in May - Sumner, 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 0min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).

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Average sunshine days in May
Sumner, MI

Average sunshine days in May - Sumner, MI
  • Average sunshine days in May: 12.6 days

The month with the most sunshine days is September (15.8 days).
The month with the least sunshine days is January (10.3 days).

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Average UV index in May
Sumner, MI

Average UV index in May - Sumner, 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, November and December (UV index 1).

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Average cloud cover in May
Sumner, MI

Average cloud cover in May - Sumner, MI
  • Average cloud cover in May: 41

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in May
Sumner, MI

Average visibility in May - Sumner, 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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Sumner, Michigan, USA

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