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
Rock Island's August showcases an average high-temperature of a moderately hot 84.9°F (29.4°C), hardly distinct from July's 86°F (30°C). In Rock Island, August's nights observe an average temperature dip to a comfortable 64.9°F (18.3°C).Heat index
In August, the heat index is appraised at a fiery hot 95°F (35°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.In terms of the heat index, values are set with light wind and shade conditions in mind. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.
Humidity
In August, the average relative humidity is 78%.Rainfall
In Rock Island, in August, during 19.7 rainfall days, 3.46" (88mm) of precipitation is typically accumulated. In Rock Island, during the entire year, the rain falls for 177.3 days and collects up to 31.02" (788mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Rock Island, the average length of the day in August is 13h and 28min.On the first day of the month, sunrise is at 5:50 am and sunset at 7:46 pm. On the last day of August, sunrise is at 6:14 am and sunset at 7:10 pm CDT.
Sunshine
In Rock Island, the average sunshine in August is 10.1h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Rock Island. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Rock Island in August?
What is the average humidity in August in Rock Island?
How many days does it rain in August in Rock Island?
When it does not snow in Rock Island?
What is the average length of the day in August in Rock Island?
When are sunrise and sunset in August in Rock Island?
How long on average sun shines in August in Rock Island?
What is the month with the highest UV index in Rock Island?
What is the UV index intensity in August in Rock Island?
Average temperature in August
Rock Island, TN
- Average high temperature in August: 84.9°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (44.2°F).
- Average low temperature in August: 64.9°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).
Average pressure in August
Rock Island, TN
- Average pressure in August: 30"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in August
Rock Island, TN
- Average wind speed in August: 4.2mph
The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in August
Rock Island, TN
- Average humidity in August: 78%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are October and November (76%).
Average rainfall in August
Rock Island, TN
- Average rainfall in August: 3.46"
The wettest month (with the highest rainfall) is July (3.82").
The driest month (with the least rainfall) is November (1.65").
Average rainfall days in August
Rock Island, TN
- Average rainfall days in August: 19.7 days
The month with the highest number of rainy days is July (20.9 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in August
Rock Island, TN
- Average snowfall in August: 0"
The month with the highest snowfall is February (0.51").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Rock Island, TN
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (3.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Rock Island, TN
- 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 1min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in August
Rock Island, TN
- Average sunshine days in August: 9.4 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (8.4 days).
Average UV index in August
Rock Island, TN
- 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
Rock Island, TN
- Average cloud cover in August: 33
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in August
Rock Island, TN
- Average visibility in August: 5mi
The months with the highest visibility are February, April, June, October and November (6mi).
The months with the lowest visibility are January, March, May, July, August, September and December (5mi).
Rock Island, Tennessee, USA
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