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
South Jacksonville's August reports an average high-temperature of a still moderately hot 82.6°F (28.1°C), exhibiting a minor difference from July. The low-temperature averages to an enjoyable 64.8°F (18.2°C) during the nights of August.Heat index
In August, the heat index is evaluated at a tropical 89.6°F (32°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.Given the heat index, its values are aligned with shaded sites and gentle winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Humidity
In South Jacksonville, the average relative humidity in August is 80%.Rainfall
In South Jacksonville, in August, during 13.5 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. In South Jacksonville, during the entire year, the rain falls for 148.2 days and collects up to 29.37" (746mm) of precipitation.Snowfall
May through September are months without snowfall in South Jacksonville.Daylight
In August, the average length of the day in South Jacksonville is 13h and 41min.On the first day of the month, sunrise is at 6:00 am and sunset at 8:13 pm. On the last day of August, sunrise is at 6:28 am and sunset at 7:33 pm CDT.
Sunshine
In South Jacksonville, the average sunshine in August is 10h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in South Jacksonville. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.Note: The UV index of 6 during August translates into the following guidance:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Frequently asked questions
Is it hot in South Jacksonville during August?
What is the average humidity in August in South Jacksonville?
How many days does it rain in August in South Jacksonville?
When it does not snow in South Jacksonville?
How many hours of daylight does South Jacksonville have in August?
What time are sunrise and sunset in August in South Jacksonville?
How many hours of sunshine does South Jacksonville have in August?
What are the months with the highest UV index in South Jacksonville?
How high is the UV index in August in South Jacksonville?
Average temperature in August
South Jacksonville, IL
- Average high temperature in August: 82.6°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in August: 64.8°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in August
South Jacksonville, IL
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
South Jacksonville, IL
- Average wind speed in August: 6.2mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in August
South Jacksonville, IL
- Average humidity in August: 80%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
South Jacksonville, IL
- Average rainfall in August: 2.4"
The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days in August
South Jacksonville, IL
- Average rainfall days in August: 13.5 days
The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and February (7.1 days).
Average snowfall in August
South Jacksonville, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
South Jacksonville, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (9.6 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 Jacksonville, IL
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in August: 10h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in August
South Jacksonville, IL
- Average sunshine days in August: 15 days
The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in August
South Jacksonville, IL
- Average UV index in August: 6
The months with the highest UV index are 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 Jacksonville, IL
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).
Average visibility in August
South Jacksonville, IL
- Average visibility in August: 5mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
South Jacksonville, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location
