July weather forecast
Thornton, IL

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Weather in July

July, like June, in Thornton, Illinois, is another warm summer month, with temperature in the range of an average high of 81.3°F (27.4°C) and an average low of 65.8°F (18.8°C).

Temperature

The highest temperatures are recorded in July, with averages reaching a high of 81.3°F (27.4°C) and a low of 65.8°F (18.8°C).

Heat index

July's heat index is calculated to be a tropical 87.8°F (31°C). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

In Thornton, the average relative humidity in July is 79%.

Rainfall

In Thornton, in July, it is raining for 17.6 days, with typically 3.31" (84mm) of accumulated precipitation. In Thornton, during the entire year, the rain falls for 155.6 days and collects up to 31.3" (795mm) of precipitation.

Snowfall

May through September are months without snowfall in Thornton.

Daylight

In Thornton, the average length of the day in July is 14h and 50min.
On the first day of the month, sunrise is at 5:20 am and sunset at 8:28 pm. On the last day of July, in Thornton, sunrise is at 5:44 am and sunset at 8:08 pm CDT.

Sunshine

In Thornton, Illinois, the average sunshine in July is 9.9h.

UV index

The months with the highest UV index are June and July, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum UV index of 6 in July translates into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. 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. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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Frequently asked questions

What is the warmest month in Thornton?

The warmest time of the year in Thornton is July, with temperatures averaging a high of 81.3°F (27.4°C) and a low of 65.8°F (18.8°C).

What are the temperatures in Thornton in July?

In July, in Thornton, the average high-temperature is 81.3°F (27.4°C), and the average low-temperature is 65.8°F (18.8°C). In July, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 87.8°F (31°C).

What is the average humidity in July in Thornton?

In Thornton, the average relative humidity in July is 79%.

How much does it rain in Thornton in July?

In Thornton, in July, during 17.6 rainfall days, 3.31" (84mm) of precipitation is typically accumulated.

When it does not snow in Thornton?

May through September are months without snowfall in Thornton, Illinois.

How many hours of daylight does Thornton have in July?

The average day length in July in Thornton, Illinois, is 14h and 50min.

When are sunrise and sunset in July in Thornton?

In July, on the first day of the month, sunrise is at 5:20 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:08 pm CDT.

How long on average sun shines in July in Thornton?

In Thornton, the average sunshine duration in July is 9.9h.

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

The months with the highest UV index in Thornton are June and July, with an average maximum UV index of 6.

What is the UV index reading in July in Thornton?

In Thornton, Illinois, the average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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 July
Thornton, IL

Average temperature in July - Thornton, IL
  • Average high temperature in July: 81.3°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in July: 65.8°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in July
Thornton, IL

Average pressure in July - Thornton, IL
  • Average pressure in July: 29.97"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in July
Thornton, IL

Average wind speed in July - Thornton, IL
  • Average wind speed in July: 6.4mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in July
Thornton, IL

Average humidity in July - Thornton, IL
  • Average humidity in July: 79%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in July
Thornton, IL

Average rainfall in July - Thornton, IL
  • Average rainfall in July: 3.31"

The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is December (1.54").

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Average rainfall days in July
Thornton, IL

Average rainfall days in July - Thornton, IL
  • Average rainfall days in July: 17.6 days

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (6.1 days).

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Average snowfall in July
Thornton, IL

Average snowfall in July - Thornton, IL
  • Average snowfall in July: 0"

The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in July
Thornton, IL

Average snowfall days in July - Thornton, IL
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Thornton, IL

Average daylight in July / Average sunshine in July - Thornton, IL
  • Average daylight in July: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in July: 9h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in July
Thornton, IL

Average sunshine days in July - Thornton, IL
  • Average sunshine days in July: 11.1 days

The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is April (10.2 days).

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Average UV index in July
Thornton, IL

Average UV index in July - Thornton, IL
  • Average UV index in July: 6

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in July
Thornton, IL

Average cloud cover in July - Thornton, IL
  • Average cloud cover in July: 32

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in July
Thornton, IL

Average visibility in July - Thornton, IL
  • Average visibility in July: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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Thornton, Illinois, USA

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