May weather forecast
Arnold, WI

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Weather in May

May, the last month of the spring in Arnold, is a refreshing month, with an average temperature fluctuating between 64.6°F (18.1°C) and 45.1°F (7.3°C).

Temperature

Arnold's May weather is characterized by a distinct upsurge in high-temperatures, soaring from April's cool 50.2°F (10.1°C) to an enjoyable 64.6°F (18.1°C). Throughout May, Arnold witnesses a nighttime temperature average of 45.1°F (7.3°C).

Humidity

With an average relative humidity of 76%, May is the least humid month in Arnold.

Rainfall

In Arnold, in May, during 18.3 rainfall days, 3.46" (88mm) of precipitation is typically accumulated. In Arnold, during the entire year, the rain falls for 137.4 days and collects up to 26.26" (667mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.8 snowfall days, in May, Arnold aggregates 0.59" (15mm) of snow. Throughout the year, there are 84 snowfall days, and 33.46" (850mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 54min.
On the first day of the month, sunrise is at 5:51 am and sunset at 8:10 pm. On the last day of May, sunrise is at 5:19 am and sunset at 8:44 pm CDT.

Sunshine

In Arnold, the average sunshine in May is 8.5h.

UV index

The months with the highest UV index in Arnold are May through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, a regular UV index of 5 translates into these guidelines:
Guard yourself - Precautionary measures against sun damage are advocated. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. 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. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Arnold in May?

In Arnold, 64.6°F (18.1°C) is the average high-temperature and 45.1°F (7.3°C) is the average low-temperature during May.

What is the least humid month in Arnold?

May is the least humid month in Arnold, Wisconsin, with an average relative humidity of 76%.

What is the average humidity in May in Arnold?

In May, the average relative humidity is 76%.

How many days does it rain in May in Arnold?

In Arnold, Wisconsin, during May, the rain falls for 18.3 days and regularly aggregates up to 3.46" (88mm) of precipitation.

What is the last month it snows in Arnold?

May is the last month it regularly snows in Arnold, Wisconsin. During 0.8 snowfall days, in May, Arnold aggregates 0.59" (15mm) of snow.

How many hours of daylight does Arnold have in May?

The average day length in May is 14h and 54min.

When is the sunrise / sunset in May in Arnold?

In May, on the first day of the month, sunrise is at 5:51 am and sunset at 8:10 pm. On the last day of the month, in Arnold, Wisconsin, sunrise is at 5:19 am and sunset at 8:44 pm CDT.

How long on average sun shines in May in Arnold?

In May, the average sunshine duration in Arnold, Wisconsin, is 8.5h.

What are the months with the highest UV index in Arnold?

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

How high is the UV index in May in Arnold?

In Arnold, Wisconsin, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from 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
Arnold, WI

Average temperature in May - Arnold, WI
  • Average high temperature in May: 64.6°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 (18.7°F).

  • Average low temperature in May: 45.1°F

The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (6.1°F).

Average pressure in May
Arnold, WI

Average pressure in May - Arnold, WI
  • Average pressure in May: 29.95"Hg

The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in May
Arnold, WI

Average wind speed in May - Arnold, WI
  • Average wind speed in May: 8mph

The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in May
Arnold, WI

Average humidity in May - Arnold, WI
  • Average humidity in May: 76%

The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (76%).

Average rainfall in May
Arnold, WI

Average rainfall in May - Arnold, WI
  • Average rainfall in May: 3.46"

The wettest month (with the highest rainfall) is June (4.06").
The driest month (with the least rainfall) is January (0.94").

Average rainfall days in May
Arnold, WI

Average rainfall days in May - Arnold, WI
  • Average rainfall days in May: 18.3 days

The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (3.7 days).

Average snowfall in May
Arnold, WI

Average snowfall in May - Arnold, WI
  • Average snowfall in May: 0.59"

The month with the highest snowfall is February (7.44").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Arnold, WI

Average snowfall days in May - Arnold, WI
  • Average snowfall days in May: 0.8 days

The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Arnold, WI

Average daylight in May / Average sunshine in May - Arnold, WI
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in May: 8h and 3min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and February (Average sunshine: 2h and 48min).

Average sunshine days in May
Arnold, WI

Average sunshine days in May - Arnold, WI
  • Average sunshine days in May: 9.8 days

The month with the most sunshine days is October (15.6 days).
The month with the least sunshine days is June (9.3 days).

Average UV index in May
Arnold, WI

Average UV index in May - Arnold, WI
  • 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).

Average cloud cover in May
Arnold, WI

Average cloud cover in May - Arnold, WI
  • Average cloud cover in May: 45

The months with the most cloud cover are January and February (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 36).

Average visibility in May
Arnold, WI

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

The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January and February (4mi).

Arnold, Wisconsin, USA

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