Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
With August's arrival, West Des Moines's weather records an average high-temperature of a still warm 81.7°F (27.6°C), marking little difference from July's 82.9°F (28.3°C). Nighttime temperatures in West Des Moines consistently average a comfortable 62.4°F (16.9°C) during August.Heat index
For August, the heat index is estimated at a hot 87.8°F (31°C). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.Be advised, the heat index considers values for conditions in shade and with a light breeze. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Humidity
The average relative humidity in August is 78%.Rainfall
In West Des Moines, in August, during 12.3 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. Throughout the year, in West Des Moines, there are 130.3 rainfall days, and 25.91" (658mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in West Des Moines.Daylight
The average length of the day in August is 13h and 48min.On the first day of August, sunrise is at 6:10 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:49 pm CDT.
Sunshine
In August, the average sunshine in West Des Moines, Iowa, is 9.9h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 6 in August translates into the following instructions:
Guard against overexposure. Protection from sun-induced harm is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What are the temperatures in West Des Moines in August?
What is the average humidity in August in West Des Moines?
How many days does it rain in August in West Des Moines?
When it does not snow in West Des Moines?
What is the average length of the day in August in West Des Moines?
When are sunrise and sunset in August in West Des Moines?
How long on average sun shines in August in West Des Moines?
What is the month with the highest UV index in West Des Moines?
How high is the UV index in August in West Des Moines?
Average temperature in August
West Des Moines, IA
- Average high temperature in August: 81.7°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 August: 62.4°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 August
West Des Moines, IA
- Average pressure in August: 29.96"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 August
West Des Moines, IA
- Average wind speed in August: 7mph
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 August
West Des Moines, IA
- Average humidity in August: 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 August
West Des Moines, IA
- Average rainfall in August: 2.36"
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 August
West Des Moines, IA
- Average rainfall days in August: 12.3 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 August
West Des Moines, IA
- Average snowfall in August: 0"
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 August
West Des Moines, IA
- Average snowfall days in August: 0 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 August /
Average sunshine in August
West Des Moines, IA
- Average daylight in August: 13h and 5min
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 August: 9h and 5min
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 August
West Des Moines, IA
- Average sunshine days in August: 16.8 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 August
West Des Moines, IA
- Average UV index in August: 6
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 August
West Des Moines, IA
- Average cloud cover in August: 30
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 August
West Des Moines, IA
- Average visibility in August: 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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