May weather forecast
Wales, IA

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Weather in May

The last month of the spring, May, is an agreeable month in Wales, Iowa, with temperature in the range of an average low of 54°F (12.2°C) and an average high of 70.7°F (21.5°C).

Temperature

May shows a rise in the average high-temperature, moving from April's enjoyable 61.3°F (16.3°C) to an agreeable 70.7°F (21.5°C). Wales experiences an average low-temperature of 54°F (12.2°C) in month of May.

Humidity

In May, the average relative humidity is 75%.

Rainfall

In Wales, during May, the rain falls for 16.8 days and regularly aggregates up to 3.5" (89mm) of precipitation. Throughout the year, in Wales, there are 117.2 rainfall days, and 21.77" (553mm) of precipitation is accumulated.

Snowfall

In Wales, snow does not fall in May through September.

Daylight

In May, the average length of the day in Wales, Iowa, is 14h and 31min.
On the first day of May in Wales, Iowa, sunrise is at 6:17 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:47 pm CDT.

Sunshine

The average sunshine in May in Wales is 8.6h.

UV index

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the UV index of 5 transforms into the following advice:
Undertake precautions - Guarding against sun damage is counselled. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Enhance your sun protection with tightly woven, yet airy clothing.
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Wales in May?

May temperatures vary between a high-temperature of 70.7°F (21.5°C) and a low-temperature of 54°F (12.2°C).

What is the average humidity in May?

In Wales, the average relative humidity in May is 75%.

How much does it rain in May?

In May, the rain falls for 16.8 days. Throughout May, 3.5" (89mm) of precipitation is accumulated.

When it does not snow?

In Wales, snow does not fall in May through September.

Does it snow in May?

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

What is the average length of the day in May?

The average day length in May is 14h and 31min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 6:17 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:47 pm CDT.

How long on average sun shines in May?

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

What is the UV index reading in May?

In Wales, Iowa, 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 the Sun's 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
Wales, IA

Average temperature in May - Wales, IA
  • Average high temperature in May: 70.7°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (30°F).

  • Average low temperature in May: 54°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).

Average pressure in May
Wales, IA

Average pressure in May - Wales, IA
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in May
Wales, IA

Average wind speed in May - Wales, IA
  • Average wind speed in May: 8.8mph

The windiest months (with the highest average wind speed) are March and April (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).

Average humidity in May
Wales, IA

Average humidity in May - Wales, IA
  • Average humidity in May: 75%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is October (68%).

Average rainfall in May
Wales, IA

Average rainfall in May - Wales, IA
  • Average rainfall in May: 3.5"

The wettest month (with the highest rainfall) is June (4.06").
The driest months (with the least rainfall) are January and February (0.63").

Average rainfall days in May
Wales, IA

Average rainfall days in May - Wales, IA
  • Average rainfall days in May: 16.8 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (2.9 days).

Average snowfall in May
Wales, IA

Average snowfall in May - Wales, IA
  • Average snowfall in May: 0"

The month with the highest snowfall is January (2.68").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
Wales, IA

Average snowfall days in May - Wales, IA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Wales, IA

Average daylight in May / Average sunshine in May - Wales, IA
  • Average daylight in May: 14h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in May
Wales, IA

Average sunshine days in May - Wales, IA
  • Average sunshine days in May: 12.3 days

The month with the most sunshine days is December (23.1 days).
The month with the least sunshine days is May (12.3 days).

Average UV index in May
Wales, IA

Average UV index in May - Wales, IA
  • Average UV index in May: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

Average cloud cover in May
Wales, IA

Average cloud cover in May - Wales, IA
  • Average cloud cover in May: 41

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in May
Wales, IA

Average visibility in May - Wales, IA
  • Average visibility in May: 6mi

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

Wales, Iowa, USA

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