July weather forecast
Karnak, IL

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Weather in July

July in Karnak, Illinois, is a hot summer month, with an average temperature ranging between min 68.5°F (20.3°C) and max 88°F (31.1°C).

Temperature

In Karnak, Illinois, July records the highest average temperatures, peaking at 88°F (31.1°C) and reaching a low of 68.5°F (20.3°C).

Heat index

The heat index in July is computed to be a scorching 104°F (40°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. 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 July is 76%.

Rainfall

In Karnak, in July, during 13.1 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. Throughout the year, in Karnak, Illinois, there are 118.3 rainfall days, and 13.03" (331mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In July, the average length of the day is 14h and 26min.
On the first day of July in Karnak, sunrise is at 5:39 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:04 pm CDT.

Sunshine

June and July, with an average of 10.4h of sunshine, are months with the most sunshine in Karnak.

UV index

The months with the highest UV index in Karnak are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: In July, an average UV index of 6 transforms into the following instructions:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

What part of the year is the hottest in Karnak?

In Karnak, Illinois, temperatures reach their average annual highs in July, measuring 88°F (31.1°C) and a minimum average of 68.5°F (20.3°C).

How hot is it in Karnak in July?

The high-temperature, in July, in Karnak, records 88°F (31.1°C), while the low-temperature is 68.5°F (20.3°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is computed to be 104°F (40°C).

What is the average humidity in July in Karnak?

In July, the average relative humidity in Karnak, Illinois, is 76%.

How much does it rain in Karnak in July?

In July, in Karnak, Illinois, the rain falls for 13.1 days. Throughout July, 1.42" (36mm) of precipitation is accumulated.

When it does not snow in Karnak?

April through October are months without snowfall.

How many hours of daylight does Karnak have in July?

The average day length in July in Karnak, Illinois, is 14h and 26min.

When are sunrise and sunset in July in Karnak?

In July, on the first day of the month, sunrise is at 5:39 am and sunset at 8:20 pm. On the last day of the month, in Karnak, Illinois, sunrise is at 6:00 am and sunset at 8:04 pm CDT.

What is the month with the most sunshine in Karnak?

The months with the most sunshine in Karnak are June and July, with an average of 10.4h of sunshine.

How long on average sun shines in July in Karnak?

The average sunshine duration in July in Karnak is 10.4h.

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

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

What is the UV index reading in July in Karnak?

In July, the average daily maximum UV index in Karnak 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 July
Karnak, IL

Average temperature in July - Karnak, IL
  • Average high temperature in July: 88°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 July: 68.5°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 July
Karnak, IL

Average pressure in July - Karnak, IL
  • Average pressure in July: 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 July
Karnak, IL

Average wind speed in July - Karnak, IL
  • Average wind speed in July: 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 July
Karnak, IL

Average humidity in July - Karnak, IL
  • Average humidity in July: 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 July
Karnak, IL

Average rainfall in July - Karnak, IL
  • Average rainfall in July: 1.42"

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 July
Karnak, IL

Average rainfall days in July - Karnak, IL
  • Average rainfall days in July: 13.1 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 July
Karnak, IL

Average snowfall in July - Karnak, IL
  • Average snowfall in July: 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 July
Karnak, IL

Average snowfall days in July - Karnak, IL
  • Average snowfall days in July: 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 July /
Average sunshine in July
Karnak, IL

Average daylight in July / Average sunshine in July - Karnak, IL
  • Average daylight in July: 14h and 2min

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 July: 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 July
Karnak, IL

Average sunshine days in July - Karnak, IL
  • Average sunshine days in July: 15.1 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 July
Karnak, IL

Average UV index in July - Karnak, IL
  • Average UV index in July: 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 July
Karnak, IL

Average cloud cover in July - Karnak, IL
  • Average cloud cover in July: 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 July
Karnak, IL

Average visibility in July - Karnak, IL
  • Average visibility in July: 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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Karnak, Illinois, USA

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