August weather forecast
New Grand Chain, IL

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Weather in August

August, the last month of the summer in New Grand Chain, is another tropical month, with an average temperature varying between 66.7°F (19.3°C) and 86.5°F (30.3°C).

Temperature

New Grand Chain marks the onset of August with an average high-temperature of a still hot 86.5°F (30.3°C), subtly divergent from July's 88°F (31.1°C). In August, New Grand Chain reports a consistent average low-temperature of 66.7°F (19.3°C) during the nights.

Heat index

In August, the heat index is estimated at a torrid 98.6°F (37°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke 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 'feels like' or 'real feel', is achieved by amalgamating air temperature with the relative humidity readings. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. 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. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

The average relative humidity in August is 76%.

Rainfall

In New Grand Chain, in August, it is raining for 11.9 days, with typically 1.3" (33mm) of accumulated precipitation. Throughout the year, there are 118.3 rainfall days, and 13.03" (331mm) of precipitation is accumulated.

Snowfall

In New Grand Chain, snow does not fall in April through October.

Daylight

The average length of the day in August in New Grand Chain is 13h and 33min.
On the first day of the month, sunrise is at 6:01 am and sunset at 8:03 pm. On the last day of August, in New Grand Chain, sunrise is at 6:26 am and sunset at 7:25 pm CDT.

Sunshine

In New Grand Chain, the average sunshine in August is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum daily UV index of 6 during August morphs into the following directions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

Is it hot in New Grand Chain during August?

The average high-temperature and low-temperature in New Grand Chain, Illinois, during August are 86.5°F (30.3°C) and 66.7°F (19.3°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is estimated at 98.6°F (37°C).

What is the average humidity in August in New Grand Chain?

In New Grand Chain, the average relative humidity in August is 76%.

How many days does it rain in August in New Grand Chain?

In New Grand Chain, in August, it is raining for 11.9 days, with typically 1.3" (33mm) of accumulated precipitation.

When it does not snow in New Grand Chain?

In New Grand Chain, Illinois, snow does not fall in April through October.

What is the average length of the day in August in New Grand Chain?

In New Grand Chain, the average day length in August is 13h and 33min.

When are sunrise and sunset in August in New Grand Chain?

In August, on the first day of the month, sunrise is at 6:01 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:25 pm CDT.

How many hours of sunshine does New Grand Chain have in August?

The average sunshine duration in August is 10.3h.

What are the months with the highest UV index in New Grand Chain?

The months with the highest UV index in New Grand Chain, Illinois, are May through August, with an average maximum UV index of 6.

What is the UV index reading in August in New Grand Chain?

In New Grand Chain, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to 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
New Grand Chain, IL

Average temperature in August - New Grand Chain, IL
  • Average high temperature in August: 86.5°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.1°F).

  • Average low temperature in August: 66.7°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 (27°F).

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Average pressure in August
New Grand Chain, IL

Average pressure in August - New Grand Chain, 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).

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Average wind speed in August
New Grand Chain, IL

Average wind speed in August - New Grand Chain, IL
  • Average wind speed in August: 5.7mph

The windiest months (with the highest average wind speed) are January and February (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in August
New Grand Chain, IL

Average humidity in August - New Grand Chain, IL
  • Average humidity in August: 76%

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

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Average rainfall in August
New Grand Chain, IL

Average rainfall in August - New Grand Chain, IL
  • Average rainfall in August: 1.3"

The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is September (0.47").

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Average rainfall days in August
New Grand Chain, IL

Average rainfall days in August - New Grand Chain, IL
  • Average rainfall days in August: 11.9 days

The month with the highest number of rainy days is July (13.1 days).
The months with the least rainy days are January, February and December (7.3 days).

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Average snowfall in August
New Grand Chain, IL

Average snowfall in August - New Grand Chain, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.67").
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
New Grand Chain, IL

Average snowfall days in August - New Grand Chain, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (3.3 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
New Grand Chain, IL

Average daylight in August / Average sunshine in August - New Grand Chain, IL
  • Average daylight in August: 13h and 3min

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

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Average sunshine days in August
New Grand Chain, IL

Average sunshine days in August - New Grand Chain, IL
  • Average sunshine days in August: 16.3 days

The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is June (14.8 days).

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Average UV index in August
New Grand Chain, IL

Average UV index in August - New Grand Chain, 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
New Grand Chain, IL

Average cloud cover in August - New Grand Chain, IL
  • Average cloud cover in August: 30

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

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Average visibility in August
New Grand Chain, IL

Average visibility in August - New Grand Chain, 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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New Grand Chain, Illinois, USA

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