August weather forecast
Mill Creek, IL

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Weather in August

The last month of the summer, August, is also a hot month in Mill Creek, Illinois, with an average temperature varying between 66.7°F (19.3°C) and 86.5°F (30.3°C).

Temperature

The transition into August reveals an average high-temperature of a still hot 86.5°F (30.3°C), mirroring a close resemblance to July. Throughout August, Mill Creek witnesses a nighttime temperature average of 66.7°F (19.3°C).

Heat index

The heat index value during August is appraised at a fiery hot 98.6°F (37°C). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

The average relative humidity in August is 76%.

Rainfall

In Mill Creek, in August, it is raining for 14.8 days, with typically 2.44" (62mm) of accumulated precipitation. In Mill Creek, during the entire year, the rain falls for 143 days and collects up to 27.44" (697mm) of precipitation.

Snowfall

In Mill Creek, snow does not fall in May through September.

Daylight

In Mill Creek, the average length of the day in August is 13h and 33min.
On the first day of the month, sunrise is at 6:02 am and sunset at 8:04 pm. On the last day of August, sunrise is at 6:27 am and sunset at 7:26 pm CDT.

Sunshine

In Mill Creek, the average sunshine in August is 10.2h.

UV index

The months with the highest UV index in Mill Creek are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In August, a regular UV index of 6 translates into these guidelines:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August in Mill Creek?

Mill Creek in August has an average high-temperature of 86.5°F (30.3°C) and an average low-temperature of 66.7°F (19.3°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, in August is appraised at 98.6°F (37°C).

What is the average humidity in August in Mill Creek?

The average relative humidity in August in Mill Creek is 76%.

How many days does it rain in August in Mill Creek?

In August, in Mill Creek, Illinois, the rain falls for 14.8 days. Throughout August, 2.44" (62mm) of precipitation is accumulated.

When it does not snow in Mill Creek?

May through September are months without snowfall.

What is the average length of the day in August in Mill Creek?

In Mill Creek, the average day length in August is 13h and 33min.

What time are sunrise and sunset in August in Mill Creek?

In August, on the first day of the month, sunrise is at 6:02 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:26 pm CDT.

How long on average sun shines in August in Mill Creek?

In August, the average sunshine duration in Mill Creek, Illinois, is 10.2h.

What is the month with the highest UV index in Mill Creek?

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

What is the UV index reading in August in Mill Creek?

The average daily maximum UV index in August in Mill Creek, Illinois, is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
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
Mill Creek, IL

Average temperature in August - Mill Creek, IL
  • Average high temperature in August: 86.5°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in August: 66.7°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

Average pressure in August
Mill Creek, IL

Average pressure in August - Mill Creek, 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 (29.94"Hg).

Average wind speed in August
Mill Creek, IL

Average wind speed in August - Mill Creek, IL
  • Average wind speed in August: 5.6mph

The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in August
Mill Creek, IL

Average humidity in August - Mill Creek, IL
  • Average humidity in August: 76%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Mill Creek, IL

Average rainfall in August - Mill Creek, IL
  • Average rainfall in August: 2.44"

The wettest month (with the highest rainfall) is April (3.31").
The driest month (with the least rainfall) is September (1.3").

Average rainfall days in August
Mill Creek, IL

Average rainfall days in August - Mill Creek, IL
  • Average rainfall days in August: 14.8 days

The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is January (8.4 days).

Average snowfall in August
Mill Creek, IL

Average snowfall in August - Mill Creek, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Mill Creek, IL

Average snowfall days in August - Mill Creek, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.6 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
Mill Creek, IL

Average daylight in August / Average sunshine in August - Mill Creek, IL
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

Average sunshine days in August
Mill Creek, IL

Average sunshine days in August - Mill Creek, IL
  • Average sunshine days in August: 13.8 days

The month with the most sunshine days is October (21 days).
The month with the least sunshine days is July (12.8 days).

Average UV index in August
Mill Creek, IL

Average UV index in August - Mill Creek, 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 and December (UV index 2).

Average cloud cover in August
Mill Creek, IL

Average cloud cover in August - Mill Creek, IL
  • Average cloud cover in August: 29

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 28).

Average visibility in August
Mill Creek, IL

Average visibility in August - Mill Creek, 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).

Mill Creek, Illinois, USA

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