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
Knoxville in August witnesses an average high-temperature of a still hot 90.7°F (32.6°C), indicating a slight variation from July's 91.4°F (33°C). A striking departure from daytime highs to an average low-temperature of 68.4°F (20.2°C) is witnessed during August.Heat index
The heat index value for August is estimated at a scorching 109.4°F (43°C). Keep guard: Heat cramps and heat exhaustion are likely. Continued activity increases the risk of heatstroke.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.
Humidity
The months with the lowest humidity are July and August, with an average relative humidity of 72%.Rainfall
In August, the rain falls for 14 days. Throughout August, 2.95" (75mm) of precipitation is accumulated. Throughout the year, there are 146.9 rainfall days, and 36.42" (925mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Knoxville.Daylight
The average length of the day in August is 13h and 27min.On the first day of August in Knoxville, sunrise is at 6:22 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 7:41 pm CDT.
Sunshine
In August, the average sunshine is 10.4h.UV index
The average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 6 during August translates into these guidelines:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in August?
What are the least humid months in Knoxville?
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 Knoxville have in August?
What time are sunrise and sunset in August?
How many hours of sunshine does Knoxville have in August?
What is the UV index intensity in August in Knoxville?
Average temperature in August
Knoxville, AR
- Average high temperature in August: 90.7°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (46.9°F).
- Average low temperature in August: 68.4°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in August
Knoxville, 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 (29.94"Hg).
Average wind speed in August
Knoxville, AR
- Average wind speed in August: 4.2mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are July and August (4.2mph).
Average humidity in August
Knoxville, AR
- Average humidity in August: 72%
The months with the highest relative humidity are March and May (79%).
The months with the lowest relative humidity are July and August (72%).
Average rainfall in August
Knoxville, AR
- Average rainfall in August: 2.95"
The wettest months (with the highest rainfall) are April and May (4.41").
The driest months (with the least rainfall) are July and September (2.36").
Average rainfall days in August
Knoxville, AR
- Average rainfall days in August: 14 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is November (9 days).
Average snowfall in August
Knoxville, AR
- Average snowfall in August: 0"
The months with the highest snowfall are January and February (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Knoxville, AR
- Average snowfall days in August: 0 days
The months with the highest number of snowfall days are January and February (1.5 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
Knoxville, AR
- Average daylight in August: 13h and 3min
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 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in August
Knoxville, AR
- Average sunshine days in August: 13.7 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (13.2 days).
Average UV index in August
Knoxville, 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
Knoxville, AR
- Average cloud cover in August: 28
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in August
Knoxville, AR
- Average visibility in August: 6mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, November and December (5mi).
Knoxville, Arkansas, USA
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