August weather forecast
Rockport, IL

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Weather in August

The last month of the summer, August, is another warm month in Rockport, Illinois, with an average temperature ranging between max 84.4°F (29.1°C) and min 65.5°F (18.6°C).

Temperature

Rockport observes a minor difference in average high-temperatures between July's 84.7°F (29.3°C) and August's 84.4°F (29.1°C). Rockport, in August, experiences an average temperature of 65.5°F (18.6°C) at night.

Heat index

For most parts of August, the heat index is calculated to be a hot 93.2°F (34°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. 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 quite important for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

In August, the average relative humidity in Rockport is 77%.

Rainfall

In Rockport, Illinois, in August, during 13.3 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. In Rockport, during the entire year, the rain falls for 142.7 days and collects up to 27.64" (702mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In August, the average length of the day is 13h and 40min.
On the first day of August in Rockport, sunrise is at 6:04 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:36 pm CDT.

Sunshine

The average sunshine in August in Rockport 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 value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.
Note: A daily high UV index of 6 in August leads to these guidelines:
Deflect overexposure. Sun protection is a necessity. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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Frequently asked questions

Is it hot in Rockport during August?

The high-temperature in Rockport, Illinois, during August is 84.4°F (29.1°C) and the low-temperature is 65.5°F (18.6°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in August is calculated to be 93.2°F (34°C).

What is the average humidity in August in Rockport?

In Rockport, the average relative humidity in August is 77%.

How many days does it rain in August in Rockport?

In August, in Rockport, the rain falls for 13.3 days. Throughout August, 2.52" (64mm) of precipitation is accumulated.

When it does not snow in Rockport?

May through September are months without snowfall in Rockport.

How many hours of daylight does Rockport have in August?

In August, the average day length is 13h and 40min.

When is the sunrise / sunset in August in Rockport?

In August, on the first day of the month, sunrise is at 6:04 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:36 pm CDT.

How many hours of sunshine does Rockport have in August?

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

When is the highest UV index in Rockport?

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

What is the UV index reading in August in Rockport?

In August, the average daily maximum UV index in Rockport is 6. A UV Index reading of 6 to 7 represents a high health threat 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
Rockport, IL

Average temperature in August - Rockport, IL
  • Average high temperature in August: 84.4°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (34.9°F).

  • Average low temperature in August: 65.5°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

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Average pressure in August
Rockport, IL

Average pressure in August - Rockport, 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).

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Average wind speed in August
Rockport, IL

Average wind speed in August - Rockport, IL
  • Average wind speed in August: 6.1mph

The windiest months (with the highest average wind speed) are January and February (9.7mph).
The calmest month (with the lowest average wind speed) is July (6mph).

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Average humidity in August
Rockport, IL

Average humidity in August - Rockport, IL
  • Average humidity in August: 77%

The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Rockport, IL

Average rainfall in August - Rockport, IL
  • Average rainfall in August: 2.52"

The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is February (1.46").

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Average rainfall days in August
Rockport, IL

Average rainfall days in August - Rockport, IL
  • Average rainfall days in August: 13.3 days

The month with the highest number of rainy days is May (17.3 days).
The months with the least rainy days are January and February (6.3 days).

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Average snowfall in August
Rockport, IL

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

The month with the highest snowfall is January (3.03").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Rockport, IL

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

The month with the highest number of snowfall days is January (8.5 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
Rockport, IL

Average daylight in August / Average sunshine in August - Rockport, 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: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).

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Average sunshine days in August
Rockport, IL

Average sunshine days in August - Rockport, IL
  • Average sunshine days in August: 15 days

The month with the most sunshine days is December (19.2 days).
The month with the least sunshine days is June (10.9 days).

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Average UV index in August
Rockport, IL

Average UV index in August - Rockport, 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
Rockport, IL

Average cloud cover in August - Rockport, IL
  • Average cloud cover in August: 30

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 30).

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Average visibility in August
Rockport, IL

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

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