August weather forecast
Gillespie, IL

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Weather in August

The last month of the summer, August, is another warm month in Gillespie, Illinois, with an average temperature fluctuating between 65.5°F (18.6°C) and 82.9°F (28.3°C).

Temperature

Gillespie, Illinois, records an average high-temperature of a still moderately hot 82.9°F (28.3°C) in August, maintaining a close correlation with July's 84.2°F (29°C). During August, the temperature in Gillespie tends to dip to an average of 65.5°F (18.6°C) at night.

Heat index

The average heat index in August is appraised at a tropical 91.4°F (33°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. 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 'real feel' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.

Humidity

In Gillespie, the average relative humidity in August is 80%.

Rainfall

In August, in Gillespie, the rain falls for 12.1 days. Throughout August, 1.57" (40mm) of precipitation is accumulated. Throughout the year, in Gillespie, there are 121.4 rainfall days, and 14.72" (374mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Gillespie.

Daylight

In Gillespie, Illinois, the average length of the day in August is 13h and 39min.
On the first day of August in Gillespie, sunrise is at 6:00 am and sunset at 8:10 pm. On the last day of the month, 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

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Steer clear of overexposure. Fair-skinned individuals can be scorched 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. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
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Frequently asked questions

How hot does it get in Gillespie in August?

August temperatures in Gillespie vary between a high-temperature of 82.9°F (28.3°C) and a low-temperature of 65.5°F (18.6°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in August is appraised at 91.4°F (33°C).

What is the average humidity in August in Gillespie?

In August, the average relative humidity in Gillespie is 80%.

How many days does it rain in August in Gillespie?

In Gillespie, Illinois, in August, it is raining for 12.1 days, with typically 1.57" (40mm) of accumulated precipitation.

When it does not snow in Gillespie?

April through October are months without snowfall in Gillespie.

What is the average length of the day in August in Gillespie?

In August, the average day length in Gillespie is 13h and 39min.

When are sunrise and sunset in August in Gillespie?

On the first day of August, sunrise is at 6:00 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:30 pm CDT.

How many hours of sunshine does Gillespie have in August?

In Gillespie, Illinois, the average sunshine duration in August is 9.9h.

What is the month with the highest UV index in Gillespie?

The months with the highest UV index in Gillespie are June through August, with an average maximum UV index of 6.

What is the UV index reading in August in Gillespie?

In August, the average daily maximum UV index in Gillespie is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Gillespie, IL

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).

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Average pressure in August
Gillespie, IL

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).

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Average wind speed in August
Gillespie, IL

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).

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Average humidity in August
Gillespie, IL

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%).

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Average rainfall in August
Gillespie, IL

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").

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Average rainfall days in August
Gillespie, IL

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).

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Average snowfall in August
Gillespie, IL

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").

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Average snowfall days in August
Gillespie, IL

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).

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Average daylight in August /
Average sunshine in August
Gillespie, IL

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).

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Average sunshine days in August
Gillespie, IL

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).

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Average UV index in August
Gillespie, IL

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).

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Average cloud cover in August
Gillespie, IL

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).

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Average visibility in August
Gillespie, IL

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).

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Gillespie, Illinois, USA

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