May weather forecast
Rio, WI

Weather in May

The last month of the spring, May, is a comfortable month in Rio, Wisconsin, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 47.7°F (8.7°C).

Temperature

In May, the average high-temperature rises from a cool 53.2°F (11.8°C) in April to an enjoyable 65.8°F (18.8°C). In Rio, in May, the average low-temperature is 47.7°F (8.7°C).

Humidity

In May, the average relative humidity in Rio is 79%.

Rainfall

In Rio, Wisconsin, in May, during 16.1 rainfall days, 3.39" (86mm) of precipitation is typically accumulated. In Rio, during the entire year, the rain falls for 134.5 days and collects up to 26.97" (685mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows in Rio. During 0.3 snowfall days, Rio aggregates 0.04" (1mm) of snow. Throughout the year, there are 54.7 snowfall days, and 19.06" (484mm) of snow is accumulated.

Daylight

In Rio, the average length of the day in May is 14h and 43min.
On the first day of May in Rio, sunrise is at 5:49 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 8:30 pm CDT.

Sunshine

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

UV index

The average daily maximum UV index in May in Rio is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to 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 - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in May in Rio?

In Rio, Wisconsin, in May, the average high-temperature is 65.8°F (18.8°C), and the average low-temperature is 47.7°F (8.7°C).

What is the average humidity in May in Rio?

In May, the average relative humidity in Rio, Wisconsin, is 79%.

How many days does it rain in May in Rio?

In Rio, Wisconsin, in May, it is raining for 16.1 days, with typically 3.39" (86mm) of accumulated precipitation.

What is the last month it snows in Rio?

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

How many hours of daylight does Rio have in May?

In May, the average day length in Rio, Wisconsin, is 14h and 43min.

What time are sunrise and sunset in May in Rio?

On the first day of May in Rio, sunrise is at 5:49 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 8:30 pm CDT.

How many hours of sunshine does Rio have in May?

In May, the average sunshine duration is 8.5h.

What is the UV index reading in May in Rio?

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

Average temperature in May
Rio, WI

Average temperature in May - Rio, WI
  • Average high temperature in May: 65.8°F

The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (22.6°F).

  • Average low temperature in May: 47.7°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).

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Average pressure in May
Rio, WI

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

The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
Rio, WI

Average wind speed in May - Rio, WI
  • Average wind speed in May: 8.6mph

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

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Average humidity in May
Rio, WI

Average humidity in May - Rio, WI
  • Average humidity in May: 79%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in May
Rio, WI

Average rainfall in May - Rio, WI
  • Average rainfall in May: 3.39"

The wettest month (with the highest rainfall) is June (3.54").
The driest month (with the least rainfall) is February (1.1").

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Average rainfall days in May
Rio, WI

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

The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is February (4.2 days).

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Average snowfall in May
Rio, WI

Average snowfall in May - Rio, WI
  • Average snowfall in May: 0.04"

The month with the highest snowfall is January (5.16").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Rio, WI

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

The month with the highest number of snowfall days is January (14.4 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
Rio, WI

Average daylight in May / Average sunshine in May - Rio, WI
  • Average daylight in May: 14h and 43min

The month with the longest days is June (Average daylight: 15h and 22min).
The month with the shortest days is December (Average daylight: 9h and 1min).

  • Average sunshine in May: 8h and 30min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

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Average sunshine days in May
Rio, WI

Average sunshine days in May - Rio, WI
  • Average sunshine days in May: 12.8 days

The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is June (10.8 days).

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Average UV index in May
Rio, WI

Average UV index in May - Rio, WI
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).

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Average cloud cover in May
Rio, WI

Average cloud cover in May - Rio, WI
  • Average cloud cover in May: 44

The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 34).

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Average visibility in May
Rio, WI

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

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

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