August weather forecastHarper, IA
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Harper, Iowa, with an average temperature ranging between max 81.1°F (27.3°C) and min 62.8°F (17.1°C).Temperature
During August, the average high-temperature is a still warm 81.1°F (27.3°C), maintaining a close resemblance to that of the preceding month. In Harper, an average temperature of 62.8°F (17.1°C) is noted during August nights.Heat index
August's average heat index is evaluated at a tropical 86°F (30°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
The average relative humidity in August is 79%.Rainfall
In Harper, in August, it is raining for 12.3 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, there are 137.9 rainfall days, and 27.76" (705mm) of precipitation is accumulated.Snowfall
In Harper, snow does not fall in June through September.Daylight
In August, the average length of the day is 13h and 47min.On the first day of August, sunrise is at 6:04 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 7:42 pm CDT.
Sunshine
In Harper, the average sunshine in August is 9.9h.UV index
In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: A maximum UV index of 5 in August translates into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. 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
Average temperature in August
Harper, IA
- Average high temperature in August: 81.1°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in August: 62.8°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 (15.6°F).
Average pressure in August
Harper, IA
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in August
Harper, IA
- Average wind speed in August: 6.9mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in August
Harper, IA
- Average humidity in August: 79%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Harper, IA
- Average rainfall in August: 2.24"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in August
Harper, IA
- Average rainfall days in August: 12.3 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in August
Harper, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Harper, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Harper, 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 54min
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 12min).
Average sunshine days in August
Harper, IA
- Average sunshine days in August: 15.5 days
The month with the most sunshine days is December (19.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in August
Harper, IA
- Average UV index in August: 5
The months with the highest UV index are June and July (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
Harper, IA
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in August
Harper, IA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
