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 brings an average high-temperature of a still warm 84°F (28.9°C), nearly matching the July temperature. During August, South Roxana consistently records a temperature low averaging an enjoyable 65.7°F (18.7°C).Heat index
August's mean heat index is calculated to be a tropical 93.2°F (34°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.Data suggests that the heat index is set for environments in shade and with a light wind. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Humidity
The average relative humidity in August in South Roxana is 79%.Rainfall
In August, in South Roxana, Illinois, the rain falls for 14.3 days. Throughout August, 2.91" (74mm) of precipitation is accumulated. In South Roxana, during the entire year, the rain falls for 138 days and collects up to 23.9" (607mm) of precipitation.Snowfall
In South Roxana, snow does not fall in May through October.Daylight
In South Roxana, the average length of the day in August is 13h and 38min.On the first day of the month, sunrise is at 6:02 am and sunset at 8:10 pm. On the last day of August, sunrise is at 6:29 am and sunset at 7:31 pm CDT.
Sunshine
In August, the average sunshine is 10h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in South Roxana, Illinois. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 6 during August leads to these advisories:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
How hot is it in South Roxana in August?
What is the average humidity in August in South Roxana?
How many days does it rain in August in South Roxana?
When it does not snow in South Roxana?
What is the average length of the day in August in South Roxana?
What time are sunrise and sunset in August in South Roxana?
How long on average sun shines in August in South Roxana?
When is the highest UV index in South Roxana?
How high is the UV index in August in South Roxana?
Average temperature in August
South Roxana, IL
- Average high temperature in August: 84°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in August: 65.7°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in August
South Roxana, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
South Roxana, IL
- Average wind speed in August: 5.8mph
The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in August
South Roxana, IL
- Average humidity in August: 79%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
South Roxana, IL
- Average rainfall in August: 2.91"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is February (1.14").
Average rainfall days in August
South Roxana, IL
- Average rainfall days in August: 14.3 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in August
South Roxana, IL
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
South Roxana, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (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
South Roxana, IL
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in August: 10h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).
Average sunshine days in August
South Roxana, IL
- Average sunshine days in August: 14 days
The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in August
South Roxana, IL
- 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, February, November and December (UV index 2).
Average cloud cover in August
South Roxana, IL
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).
Average visibility in August
South Roxana, IL
- 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).
South Roxana, Illinois, USA
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