August weather forecastRivervale, AR
August
Weather in August
August, the last month of the summer in Rivervale, is also a hot month, with an average temperature fluctuating between 69.6°F (20.9°C) and 87.1°F (30.6°C).Temperature
Rivervale observes a minor difference in average high-temperatures between July's 88.9°F (31.6°C) and August's 87.1°F (30.6°C). Rivervale experiences a mean temperature of 69.6°F (20.9°C) during August nights.Heat index
During August, the heat index is calculated to be a fiery hot 100.4°F (38°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. 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. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
The average relative humidity in August in Rivervale is 76%.Rainfall
In Rivervale, in August, it is raining for 16.3 days, with typically 2.95" (75mm) of accumulated precipitation. In Rivervale, during the entire year, the rain falls for 166.3 days and collects up to 41.46" (1053mm) of precipitation.Snowfall
April through October are months without snowfall in Rivervale.Daylight
In Rivervale, the average length of the day in August is 13h and 28min.On the first day of the month, sunrise is at 6:10 am and sunset at 8:05 pm. On the last day of August, sunrise is at 6:33 am and sunset at 7:29 pm CDT.
Sunshine
The average sunshine in August in Rivervale is 10.5h.UV index
In August, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 6 in August interprets into the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. 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. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Rivervale, AR
- Average high temperature in August: 87.1°F
The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in August: 69.6°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (32.7°F).
Average pressure in August
Rivervale, AR
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Rivervale, AR
- Average wind speed in August: 5.7mph
The windiest month (with the highest average wind speed) is February (9.6mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in August
Rivervale, AR
- Average humidity in August: 76%
The month with the highest relative humidity is March (78%).
The month with the lowest relative humidity is October (68%).
Average rainfall in August
Rivervale, AR
- Average rainfall in August: 2.95"
The wettest month (with the highest rainfall) is May (4.72").
The driest month (with the least rainfall) is September (2.56").
Average rainfall days in August
Rivervale, AR
- Average rainfall days in August: 16.3 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in August
Rivervale, AR
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.61").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Rivervale, AR
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Rivervale, AR
- Average daylight in August: 13h and 30min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in August: 10h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in August
Rivervale, AR
- Average sunshine days in August: 11.4 days
The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in August
Rivervale, AR
- Average UV index in August: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in August
Rivervale, AR
- Average cloud cover in August: 26
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 24).
Average visibility in August
Rivervale, AR
- 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).
