August weather forecastShelby, IA
August
Weather in August
The last month of the summer, August, is another warm month in Shelby, Iowa, with an average temperature fluctuating between 81.1°F (27.3°C) and 62.2°F (16.8°C).Temperature
Upon the beginning of August, Shelby's high-temperatures register at a still warm 81.1°F (27.3°C), closely mirroring the preceding month. Throughout August, a steady low-temperature average of 62.2°F (16.8°C) is noted.Heat index
In August, the heat index is estimated at a tropical 86°F (30°C). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.It is crucial to understand that heat index figures are for shade and gentle wind conditions. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Humidity
In Shelby, the average relative humidity in August is 79%.Rainfall
In Shelby, in August, during 13.7 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. Throughout the year, there are 127.7 rainfall days, and 26.57" (675mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Shelby.Daylight
The average length of the day in August in Shelby, Iowa, is 13h and 47min.On the first day of the month, sunrise is at 6:17 am and sunset at 8:38 pm. On the last day of August, in Shelby, Iowa, sunrise is at 6:47 am and sunset at 7:56 pm CDT.
Sunshine
In August, the average sunshine is 9.7h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in Shelby. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 6 during August morphs into the following directions:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Shelby, IA
- Average high temperature in August: 81.1°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 (28.8°F).
- Average low temperature in August: 62.2°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average pressure in August
Shelby, 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 (29.87"Hg).
Average wind speed in August
Shelby, IA
- Average wind speed in August: 7.3mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in August
Shelby, IA
- Average humidity in August: 79%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (68%).
Average rainfall in August
Shelby, IA
- Average rainfall in August: 2.8"
The wettest month (with the highest rainfall) is June (4.37").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in August
Shelby, IA
- Average rainfall days in August: 13.7 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in August
Shelby, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (3.7").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Shelby, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Shelby, IA
- Average daylight in August: 13h and 48min
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 42min
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 36min).
Average sunshine days in August
Shelby, IA
- Average sunshine days in August: 14.8 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (11 days).
Average UV index in August
Shelby, 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, October, November and December (UV index 2).
Average cloud cover in August
Shelby, IA
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in August
Shelby, 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).
