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 marks an average high-temperature of a still moderately hot 82°F (27.8°C), hardly differing from July's 83.3°F (28.5°C). Promise City's nights in August experience an average temperature drop to a refreshing 63.7°F (17.6°C).Heat index
August's mean heat index is appraised at a tropical 87.8°F (31°C). Continuing activity during long-lasting exposure might induce tiredness and result in heat cramps.Know that the heat index computations account for shaded terrains and slight winds. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
In August, the average relative humidity is 78%.Rainfall
In Promise City, during August, the rain falls for 13.5 days and regularly aggregates up to 2.2" (56mm) of precipitation. In Promise City, during the entire year, the rain falls for 125.7 days and collects up to 20.39" (518mm) of precipitation.Snowfall
In Promise City, Iowa, snow does not fall in June through September.Daylight
In Promise City, the average length of the day in August is 13h and 44min.On the first day of the month, sunrise is at 6:09 am and sunset at 8:27 pm. On the last day of August, sunrise is at 6:39 am and sunset at 7:45 pm CDT.
Sunshine
The average sunshine in August is 10h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 6 in August, converts into the following recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are August temperatures?
What is the average humidity in August in Promise City?
How much does it rain in August?
When it does not snow?
How many hours of daylight does Promise City have in August?
When are sunrise and sunset in August?
How many hours of sunshine does Promise City have in August?
What are the months with the highest UV index?
What is the UV index reading in August?
Average temperature in August
Promise City, IA
- Average high temperature in August: 82°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in August: 63.7°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in August
Promise City, 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 (29.89"Hg).
Average wind speed in August
Promise City, IA
- Average wind speed in August: 7mph
The windiest months (with the highest average wind speed) are January and March (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in August
Promise City, IA
- Average humidity in August: 78%
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Promise City, IA
- Average rainfall in August: 2.2"
The wettest month (with the highest rainfall) is June (3.31").
The driest months (with the least rainfall) are January and December (0.71").
Average rainfall days in August
Promise City, IA
- Average rainfall days in August: 13.5 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in August
Promise City, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Promise City, 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
Promise City, IA
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in August: 10h and 0min
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
Promise City, IA
- Average sunshine days in August: 14.3 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in August
Promise City, 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
Promise City, IA
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July, August and September (Cloud cover 29).
Average visibility in August
Promise City, 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).
Promise City, Iowa, USA
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