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
August's average high-temperature stands at a still hot 88°F (31.1°C), showing little deviation from July's 89.2°F (31.8°C). Johnson's average low-temperature in August is measured at an enjoyable 67.3°F (19.6°C).Heat index
During August, the heat index is estimated at a torrid 100.4°F (38°C). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.Heat index values are typically calculated for conditions of shade and a light breeze. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gauges the sensation of temperature factoring in the air's moisture content. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.
Humidity
August and October, with an average relative humidity of 72%, are the least humid months.Rainfall
In August, the rain falls for 16.7 days. Throughout August, 3.66" (93mm) of precipitation is accumulated. In Johnson, during the entire year, the rain falls for 161.1 days and collects up to 34.09" (866mm) of precipitation.Snowfall
June through October are months without snowfall in Johnson, Arkansas.Daylight
In August, the average length of the day is 13h and 29min.On the first day of the month, sunrise is at 6:24 am and sunset at 8:21 pm. On the last day of August, sunrise is at 6:48 am and sunset at 7:45 pm CDT.
Sunshine
With an average of 10.7h of sunshine, August has the most sunshine of the year.UV index
May 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 hazard from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 6 in August translates into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during August?
What is the least humid month?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
How many hours of daylight does Johnson have in August?
When is the sunrise / sunset in August?
What month has the most sunshine?
How many hours of sunshine does Johnson have in August?
What are the months with the highest UV index?
How high is the UV index in August?
Average temperature in August
Johnson, AR
- Average high temperature in August: 88°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (44.4°F).
- Average low temperature in August: 67.3°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).
Average pressure in August
Johnson, 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
Johnson, AR
- Average wind speed in August: 6mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in August
Johnson, AR
- Average humidity in August: 72%
The months with the highest relative humidity are March and May (77%).
The months with the lowest relative humidity are August and October (72%).
Average rainfall in August
Johnson, AR
- Average rainfall in August: 3.66"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is February (1.81").
Average rainfall days in August
Johnson, AR
- Average rainfall days in August: 16.7 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (8.7 days).
Average snowfall in August
Johnson, AR
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.05").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in August
Johnson, AR
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Johnson, AR
- Average daylight in August: 13h and 3min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in August: 10h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in August
Johnson, AR
- Average sunshine days in August: 11.7 days
The months with the most sunshine days are January and December (18.5 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in August
Johnson, AR
- Average UV index in August: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in August
Johnson, AR
- Average cloud cover in August: 25
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in August
Johnson, 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).
Johnson, Arkansas, USA
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