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
The onset of August brings with it an average high-temperature of a still warm 82.2°F (27.9°C), showing a negligible variation from the month before. The nighttime temperature dips to a refreshing 63.7°F (17.6°C) on average during August.Heat index
Throughout August, the heat index is evaluated at a tropical 89.6°F (32°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.Keep in mind the heat index values are meant for areas in shade and with light wind. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Humidity
The average relative humidity in August in Shenandoah is 78%.Rainfall
In Shenandoah, in August, during 12.8 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. Throughout the year, there are 125.6 rainfall days, and 26.14" (664mm) of precipitation is accumulated.Snowfall
In Shenandoah, snow does not fall in May through September.Daylight
The average length of the day in August is 13h and 45min.On the first day of August, sunrise is at 6:18 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 7:54 pm CDT.
Sunshine
In Shenandoah, the average sunshine in August 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 value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In August, a daily UV index of 6 turns into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
What is the average length of the day in August?
When are sunrise and sunset in August in Shenandoah?
How many hours of sunshine does Shenandoah have in August?
When is the highest UV index?
What is the UV index reading in August?
Average temperature in August
Shenandoah, IA
- Average high temperature in August: 82.2°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in August: 63.7°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in August
Shenandoah, IA
- Average pressure in August: 29.95"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in August
Shenandoah, IA
- Average wind speed in August: 6.9mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in August
Shenandoah, IA
- Average humidity in August: 78%
The months with the highest relative humidity are January and July (79%).
The month with the lowest relative humidity is October (67%).
Average rainfall in August
Shenandoah, IA
- Average rainfall in August: 2.6"
The wettest month (with the highest rainfall) is June (4.29").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in August
Shenandoah, IA
- Average rainfall days in August: 12.8 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in August
Shenandoah, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Shenandoah, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Shenandoah, IA
- Average daylight in August: 13h and 4min
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 August: 9h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in August
Shenandoah, IA
- Average sunshine days in August: 15.8 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in August
Shenandoah, IA
- Average UV index in August: 6
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, November and December (UV index 2).
Average cloud cover in August
Shenandoah, IA
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in August
Shenandoah, IA
- Average visibility in August: 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).
Shenandoah, Iowa, USA
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