May weather forecast
Custer, WI

Weather in May

The last month of the spring, May, is a comfortable month in Custer, Wisconsin, with temperature in the range of an average high of 64°F (17.8°C) and an average low of 46.6°F (8.1°C).

Temperature

In Custer, the average high-temperature in May increases from a fresh 50.2°F (10.1°C) in April to an enjoyable 64°F (17.8°C). In Custer, the average low-temperature is 46.6°F (8.1°C).

Humidity

The average relative humidity in May in Custer is 77%.

Rainfall

In Custer, during 16.1 rainfall days, 3.07" (78mm) of precipitation is typically accumulated. In Custer, during the entire year, the rain falls for 123.2 days and collects up to 23.54" (598mm) of precipitation.

Snowfall

Months with snowfall in Custer are January through May, October through December. May is the last month it regularly snows in Custer. During 0.3 snowfall days, Custer aggregates 0.12" (3mm) of snow. In Custer, during the entire year, snow falls for 59.4 days and aggregates up to 22.83" (580mm) of snow.

Daylight

In May, the average length of the day is 14h and 49min.
On the first day of May, sunrise is at 5:47 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 5:16 am and sunset at 8:34 pm CDT.

Sunshine

In May, the average sunshine in Custer is 8.3h.

UV index

In Custer, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: The daily maximum UV index of 4 in May interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in May in Custer?

In May, in Custer, Wisconsin, the average high-temperature is 64°F (17.8°C), and the average low-temperature is 46.6°F (8.1°C).

What is the average humidity in May in Custer?

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

How many days does it rain in May in Custer?

In Custer, Wisconsin, in May, during 16.1 rainfall days, 3.07" (78mm) of precipitation is typically accumulated.

What is the last month it snows in Custer?

May is the last month it regularly snows in Custer, Wisconsin. During 0.3 snowfall days, in May, Custer aggregates 0.12" (3mm) of snow.

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

In May, the average day length in Custer is 14h and 49min.

When is the sunrise / sunset in May in Custer?

In May, on the first day of the month, sunrise is at 5:47 am and sunset at 8:02 pm. On the last day of the month, in Custer, sunrise is at 5:16 am and sunset at 8:34 pm CDT.

How many hours of sunshine does Custer have in May?

In Custer, the average sunshine duration in May is 8.3h.

How high is the UV index in May in Custer?

In Custer, Wisconsin, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Custer, WI

Average temperature in May - Custer, WI
  • Average high temperature in May: 64°F

The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (20.5°F).

  • Average low temperature in May: 46.6°F

The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (9°F).

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Average pressure in May
Custer, WI

Average pressure in May - Custer, WI
  • Average pressure in May: 29.96"Hg

The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
Custer, WI

Average wind speed in May - Custer, WI
  • Average wind speed in May: 9.1mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (7.2mph).

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Average humidity in May
Custer, WI

Average humidity in May - Custer, WI
  • Average humidity in May: 77%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in May
Custer, WI

Average rainfall in May - Custer, WI
  • Average rainfall in May: 3.07"

The wettest month (with the highest rainfall) is June (3.23").
The driest month (with the least rainfall) is February (0.91").

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Average rainfall days in May
Custer, WI

Average rainfall days in May - Custer, WI
  • Average rainfall days in May: 16.1 days

The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is January (2.8 days).

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Average snowfall in May
Custer, WI

Average snowfall in May - Custer, WI
  • Average snowfall in May: 0.12"

The month with the highest snowfall is December (5.2").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Custer, WI

Average snowfall days in May - Custer, WI
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (14.1 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
Custer, WI

Average daylight in May / Average sunshine in May - Custer, WI
  • Average daylight in May: 14h and 49min

The month with the longest days is June (Average daylight: 15h and 29min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in May: 8h and 18min

The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

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Average sunshine days in May
Custer, WI

Average sunshine days in May - Custer, WI
  • Average sunshine days in May: 12.7 days

The month with the most sunshine days is November (17 days).
The months with the least sunshine days are April, May and June (12.7 days).

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Average UV index in May
Custer, WI

Average UV index in May - Custer, WI
  • Average UV index in May: 4

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

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Average cloud cover in May
Custer, WI

Average cloud cover in May - Custer, WI
  • Average cloud cover in May: 46

The month with the most cloud cover is January (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 36).

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Average visibility in May
Custer, WI

Average visibility in May - Custer, WI
  • Average visibility in May: 6mi

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

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