July weather forecast
Lewis Corner, IL

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Weather in July

July is a tropical summer month in Lewis Corner, Illinois, with temperature in the range of an average low of 68.9°F (20.5°C) and an average high of 88.3°F (31.3°C).

Temperature

July, having an average high-temperature of 88.3°F (31.3°C) and an average low-temperature of 68.9°F (20.5°C), is the warmest month.

Heat index

For July, the heat index is computed to be a scorching 104°F (40°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. 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. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

In July, the average relative humidity is 76%.

Rainfall

In July, in Lewis Corner, the rain falls for 15.3 days. Throughout July, 2.76" (70mm) of precipitation is accumulated. In Lewis Corner, during the entire year, the rain falls for 160.7 days and collects up to 36.73" (933mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in July is 14h and 26min.
On the first day of July in Lewis Corner, sunrise is at 5:37 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 8:02 pm CDT.

Sunshine

June and July, with an average of 10.6h of sunshine, are months with the most sunshine in Lewis Corner.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: In July, the maximum UV index of 6 suggests this advice:
Guard oneself from overexposure. Defence against sun injury is vital. 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. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What month is the hottest in Lewis Corner?

In Lewis Corner, Illinois, the average temperatures in July are the highest, with a peak at 88.3°F (31.3°C) and a low of 68.9°F (20.5°C).

How hot is it in Lewis Corner in July?

July temperatures vary between a high-temperature of 88.3°F (31.3°C) and a low-temperature of 68.9°F (20.5°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in July is computed to be 104°F (40°C).

What is the average humidity in July in Lewis Corner?

The average relative humidity in July in Lewis Corner, Illinois, is 76%.

How much does it rain in Lewis Corner in July?

In Lewis Corner, during July, the rain falls for 15.3 days and regularly aggregates up to 2.76" (70mm) of precipitation.

When it does not snow in Lewis Corner?

May through October are months without snowfall.

What is the average length of the day in July in Lewis Corner?

In Lewis Corner, Illinois, the average day length in July is 14h and 26min.

When is the sunrise / sunset in July in Lewis Corner?

In July, on the first day of the month, sunrise is at 5:37 am and sunset at 8:18 pm. On the last day of the month, in Lewis Corner, sunrise is at 5:58 am and sunset at 8:02 pm CDT.

What is the month with the most sunshine in Lewis Corner?

June and July, with an average of 10.6h of sunshine, are months with the most sunshine in Lewis Corner, Illinois.

How long on average sun shines in July in Lewis Corner?

In July, the average sunshine duration in Lewis Corner is 10.6h.

What are the months with the highest UV index in Lewis Corner?

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

What is the UV index reading in July in Lewis Corner?

The average daily maximum UV index in July in Lewis Corner, Illinois, is 6. A UV Index estimate of 6 to 7 represents a high hazard to health 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
Lewis Corner, IL

Average temperature in July - Lewis Corner, IL
  • Average high temperature in July: 88.3°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 (41.4°F).

  • Average low temperature in July: 68.9°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (28°F).

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Average pressure in July
Lewis Corner, IL

Average pressure in July - Lewis Corner, IL
  • Average pressure in July: 29.98"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in July
Lewis Corner, IL

Average wind speed in July - Lewis Corner, IL
  • Average wind speed in July: 5.6mph

The windiest months (with the highest average wind speed) are January, March and April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).

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Average humidity in July
Lewis Corner, IL

Average humidity in July - Lewis Corner, 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 (70%).

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Average rainfall in July
Lewis Corner, IL

Average rainfall in July - Lewis Corner, IL
  • Average rainfall in July: 2.76"

The wettest month (with the highest rainfall) is April (4.29").
The driest month (with the least rainfall) is September (1.5").

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Average rainfall days in July
Lewis Corner, IL

Average rainfall days in July - Lewis Corner, IL
  • Average rainfall days in July: 15.3 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is October (10.2 days).

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Average snowfall in July
Lewis Corner, IL

Average snowfall in July - Lewis Corner, IL
  • Average snowfall in July: 0"

The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in July
Lewis Corner, IL

Average snowfall days in July - Lewis Corner, IL
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in July /
Average sunshine in July
Lewis Corner, IL

Average daylight in July / Average sunshine in July - Lewis Corner, 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 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

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Average sunshine days in July
Lewis Corner, IL

Average sunshine days in July - Lewis Corner, IL
  • Average sunshine days in July: 12.8 days

The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is May (11 days).

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Average UV index in July
Lewis Corner, IL

Average UV index in July - Lewis Corner, 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
Lewis Corner, IL

Average cloud cover in July - Lewis Corner, IL
  • Average cloud cover in July: 29

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is September (Cloud cover 26).

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Average visibility in July
Lewis Corner, IL

Average visibility in July - Lewis Corner, 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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Lewis Corner, Illinois, USA

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