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
Gillespie's August showcases an average high-temperature of a still warm 82.9°F (28.3°C), hardly distinct from July's 84.2°F (29°C). Gillespie cools down to an average low-temperature of 65.5°F (18.6°C) throughout the month of August.Heat index
The average heat index in August is calculated to be a hot 91.4°F (33°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Humidity
In Gillespie, the average relative humidity in August is 80%.Rainfall
In Gillespie, in August, it is raining for 12.1 days, with typically 1.57" (40mm) of accumulated precipitation. Throughout the year, there are 121.4 rainfall days, and 14.72" (374mm) of precipitation is accumulated.Snowfall
In Gillespie, snow does not fall in April through October.Daylight
In Gillespie, Illinois, the average length of the day in August is 13h and 39min.On the first day of the month, sunrise is at 6:00 am and sunset at 8:10 pm. On the last day of August, sunrise is at 6:27 am and sunset at 7:30 pm CDT.
Sunshine
In Gillespie, the average sunshine in August is 9.9h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: In August, a daily UV index of 6 turns into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is August?
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 Gillespie have in August?
What time are sunrise and sunset in August?
How many hours of sunshine does Gillespie have in August?
What are the months with the highest UV index?
What is the UV index reading in August?
Average temperature in August
Gillespie, IL
- Average high temperature in August: 82.9°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in August: 65.5°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in August
Gillespie, 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
Gillespie, IL
- Average wind speed in August: 5.9mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in August
Gillespie, IL
- Average humidity in August: 80%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Gillespie, IL
- Average rainfall in August: 1.57"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days in August
Gillespie, IL
- Average rainfall days in August: 12.1 days
The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in August
Gillespie, IL
- Average snowfall in August: 0"
The month with the highest snowfall is December (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Gillespie, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (6.3 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
Gillespie, 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 30min).
- Average sunshine in August: 9h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in August
Gillespie, IL
- Average sunshine days in August: 15.3 days
The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is July (12.5 days).
Average UV index in August
Gillespie, 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
Gillespie, IL
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).
Average visibility in August
Gillespie, 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).
Gillespie, Illinois, USA
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