August weather forecast
Rockwood, IL

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Weather in August

The last month of the summer, August, is also a hot month in Rockwood, Illinois, with an average temperature fluctuating between 86.2°F (30.1°C) and 66°F (18.9°C).

Temperature

Rockwood's shift into August is marked by a subtle change to a still hot 86.2°F (30.1°C) from July's 87.8°F (31°C) in temperature. During August, Rockwood records an average temperature of 66°F (18.9°C) at night.

Heat index

For most parts of August, the heat index is evaluated at a torrid 98.6°F (37°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

The average relative humidity in August is 76%.

Rainfall

In Rockwood, in August, it is raining for 10.9 days, with typically 0.98" (25mm) of accumulated precipitation. In Rockwood, during the entire year, the rain falls for 111.9 days and collects up to 10.43" (265mm) of precipitation.

Snowfall

In Rockwood, snow does not fall in April through September.

Daylight

In August, the average length of the day is 13h and 35min.
On the first day of the month, sunrise is at 6:02 am and sunset at 8:07 pm. On the last day of August, in Rockwood, sunrise is at 6:28 am and sunset at 7:29 pm CDT.

Sunshine

In Rockwood, the average sunshine in August is 10.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Rockwood. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A daily maximum UV index of 6 in August translates into the following instructions:
Shield from overexposure. Defense against sun-related harm is required. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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Frequently asked questions

Is it hot in Rockwood during August?

In Rockwood, in August, the average high-temperature is 86.2°F (30.1°C), and the average low-temperature is 66°F (18.9°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 98.6°F (37°C).

What is the average humidity in August in Rockwood?

The average relative humidity in August in Rockwood is 76%.

How many days does it rain in August in Rockwood?

In Rockwood, during August, the rain falls for 10.9 days and regularly aggregates up to 0.98" (25mm) of precipitation.

When it does not snow in Rockwood?

April through September are months without snowfall in Rockwood.

How many hours of daylight does Rockwood have in August?

In Rockwood, the average day length in August is 13h and 35min.

When are sunrise and sunset in August in Rockwood?

In August, on the first day of the month, sunrise is at 6:02 am and sunset at 8:07 pm. On the last day of the month, in Rockwood, Illinois, sunrise is at 6:28 am and sunset at 7:29 pm CDT.

How many hours of sunshine does Rockwood have in August?

In August, the average sunshine duration in Rockwood, Illinois, is 10.3h.

What are the months with the highest UV index in Rockwood?

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 Rockwood?

In Rockwood, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health threat from unsafe 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
Rockwood, IL

Average temperature in August - Rockwood, IL
  • Average high temperature in August: 86.2°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (39.4°F).

  • Average low temperature in August: 66°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

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Average pressure in August
Rockwood, IL

Average pressure in August - Rockwood, 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 (29.93"Hg).

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Average wind speed in August
Rockwood, IL

Average wind speed in August - Rockwood, IL
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in August
Rockwood, IL

Average humidity in August - Rockwood, 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%).

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Average rainfall in August
Rockwood, IL

Average rainfall in August - Rockwood, IL
  • Average rainfall in August: 0.98"

The wettest months (with the highest rainfall) are April and May (1.22").
The driest month (with the least rainfall) is September (0.43").

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Average rainfall days in August
Rockwood, IL

Average rainfall days in August - Rockwood, IL
  • Average rainfall days in August: 10.9 days

The month with the highest number of rainy days is July (13.4 days).
The month with the least rainy days is January (5.9 days).

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Average snowfall in August
Rockwood, IL

Average snowfall in August - Rockwood, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August and September (0").

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Average snowfall days in August
Rockwood, IL

Average snowfall days in August - Rockwood, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (3.7 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
Rockwood, IL

Average daylight in August / Average sunshine in August - Rockwood, 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 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 48min).

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Average sunshine days in August
Rockwood, IL

Average sunshine days in August - Rockwood, IL
  • Average sunshine days in August: 16.5 days

The month with the most sunshine days is October (21.9 days).
The month with the least sunshine days is July (13.5 days).

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Average UV index in August
Rockwood, IL

Average UV index in August - Rockwood, 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).

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Average cloud cover in August
Rockwood, IL

Average cloud cover in August - Rockwood, IL
  • Average cloud cover in August: 28

The months with the most cloud cover are January and February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 27).

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Average visibility in August
Rockwood, IL

Average visibility in August - Rockwood, 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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Rockwood, Illinois, USA

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