July weather forecast
Crystal Lawns, IL

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Weather in July

July, the same as June, is a moderately hot summer month in Crystal Lawns, Illinois, with temperature in the range of an average high of 81.3°F (27.4°C) and an average low of 64.8°F (18.2°C).

Temperature

July brings the highest temperatures, with an average high of 81.3°F (27.4°C) and an average low of 64.8°F (18.2°C).

Heat index

July's heat index is estimated at a tropical 87.8°F (31°C). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.
Be advised, the heat index considers values for conditions in shade and with a light breeze. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', takes into account both air temperature and humidity to illustrate what people actually feel. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are extremely significant for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

In Crystal Lawns, the average relative humidity in July is 82%.

Rainfall

In July, the rain falls for 17.9 days. Throughout July, 3.46" (88mm) of precipitation is accumulated. In Crystal Lawns, during the entire year, the rain falls for 153.6 days and collects up to 32.72" (831mm) of precipitation.

Snowfall

In Crystal Lawns, snow does not fall in May through October.

Daylight

In Crystal Lawns, the average length of the day in July is 14h and 50min.
On the first day of July, sunrise is at 5:22 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:10 pm CDT.

Sunshine

In Crystal Lawns, the average sunshine in July is 9.6h.

UV index

The months with the highest UV index are June and July, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: An average maximum UV index of 6 in July leads to these recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Updated: Jun 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

July registers as the month with the average highest temperatures in Crystal Lawns, reaching 81.3°F (27.4°C) at its peak and 64.8°F (18.2°C) at the lowest.

What are July temperatures in Crystal Lawns?

The average high-temperature, in July, in Crystal Lawns, is 81.3°F (27.4°C), while the average low-temperature is 64.8°F (18.2°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, is estimated at 87.8°F (31°C).

What is the average humidity in July in Crystal Lawns?

In Crystal Lawns, the average relative humidity in July is 82%.

How much does it rain in July?

In July, the rain falls for 17.9 days. Throughout July, 3.46" (88mm) of precipitation is accumulated.

When it does not snow?

May through October are months without snowfall.

What is the average length of the day in July?

In Crystal Lawns, the average day length in July is 14h and 50min.

When is the sunrise / sunset in July?

In July, on the first day of the month, sunrise is at 5:22 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:10 pm CDT.

How long on average sun shines in July?

In Crystal Lawns, the average sunshine duration in July is 9.6h.

What are the months with the highest UV index?

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

What is the UV index intensity in July?

The average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Crystal Lawns, IL

Average temperature in July - Crystal Lawns, 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 (29.3°F).

  • Average low temperature in July: 64.8°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).

Average pressure in July
Crystal Lawns, IL

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

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in July
Crystal Lawns, IL

Average wind speed in July - Crystal Lawns, IL
  • Average wind speed in July: 6.2mph

The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

Average humidity in July
Crystal Lawns, IL

Average humidity in July - Crystal Lawns, IL
  • Average humidity in July: 82%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).

Average rainfall in July
Crystal Lawns, IL

Average rainfall in July - Crystal Lawns, IL
  • Average rainfall in July: 3.46"

The wettest month (with the highest rainfall) is May (4.41").
The driest month (with the least rainfall) is February (1.61").

Average rainfall days in July
Crystal Lawns, IL

Average rainfall days in July - Crystal Lawns, IL
  • Average rainfall days in July: 17.9 days

The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is February (5.7 days).

Average snowfall in July
Crystal Lawns, IL

Average snowfall in July - Crystal Lawns, IL
  • Average snowfall in July: 0"

The month with the highest snowfall is January (4.33").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in July
Crystal Lawns, IL

Average snowfall days in July - Crystal Lawns, IL
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in July /
Average sunshine in July
Crystal Lawns, IL

Average daylight in July / Average sunshine in July - Crystal Lawns, 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 4min

The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in July
Crystal Lawns, IL

Average sunshine days in July - Crystal Lawns, IL
  • Average sunshine days in July: 10.8 days

The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is June (10.4 days).

Average UV index in July
Crystal Lawns, IL

Average UV index in July - Crystal Lawns, IL
  • Average UV index in July: 6

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

Average cloud cover in July
Crystal Lawns, IL

Average cloud cover in July - Crystal Lawns, IL
  • Average cloud cover in July: 36

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).

Average visibility in July
Crystal Lawns, IL

Average visibility in July - Crystal Lawns, IL
  • Average visibility in July: 5mi

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

Crystal Lawns, Illinois, USA

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