Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
With the onset of May, West Des Moines sees a temperature rise, with the average high-temperature moving from April's mild 59.5°F (15.3°C) to an agreeable 69.8°F (21°C). Throughout May, West Des Moines registers a consistent average low-temperature of 53.1°F (11.7°C).Humidity
In West Des Moines, the average relative humidity in May is 78%.Rainfall
May is the month with the most rainfall in West Des Moines. Rain falls for 16.9 days and accumulates 4.33" (110mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in West Des Moines. During 0.2 snowfall days, in May, West Des Moines aggregates 0.24" (6mm) of snow. In West Des Moines, during the entire year, snow falls for 35.4 days and aggregates up to 12.99" (330mm) of snow.Daylight
The average length of the day in May is 14h and 33min.On the first day of the month, sunrise is at 6:10 am and sunset at 8:13 pm. On the last day of May, in West Des Moines, sunrise is at 5:43 am and sunset at 8:42 pm CDT.
Sunshine
In May, the average sunshine in West Des Moines, Iowa, is 8.7h.UV index
In May, the average daily maximum UV index in West Des Moines is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The daily maximum UV index of 5 in May interprets into the following advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in West Des Moines?
What is the average humidity in May in West Des Moines?
What is the rainiest month in West Des Moines?
How many days does it rain in May in West Des Moines?
What is the last month it snows in West Des Moines?
What is the average length of the day in May in West Des Moines?
When are sunrise and sunset in May in West Des Moines?
How many hours of sunshine does West Des Moines have in May?
What is the UV index reading in May in West Des Moines?
Average temperature in May
West Des Moines, IA
- Average high temperature in May: 69.8°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in May: 53.1°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in May
West Des Moines, IA
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
West Des Moines, IA
- Average wind speed in May: 8.8mph
The windiest months (with the highest average wind speed) are January, March and April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in May
West Des Moines, IA
- Average humidity in May: 78%
The months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
West Des Moines, IA
- Average rainfall in May: 4.33"
The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in May
West Des Moines, IA
- Average rainfall days in May: 16.9 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in May
West Des Moines, IA
- Average snowfall in May: 0.24"
The month with the highest snowfall is January (4.37").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
West Des Moines, IA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
West Des Moines, 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 12min).
- 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: 4h and 18min).
Average sunshine days in May
West Des Moines, IA
- Average sunshine days in May: 12.1 days
The months with the most sunshine days are November and December (18.7 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in May
West Des Moines, IA
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
West Des Moines, IA
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in May
West Des Moines, IA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
West Des Moines, Iowa, USA
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