Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
In Perks, the peak temperatures are generally noted in July, averaging a high of 88°F (31.1°C) and a low of 68.5°F (20.3°C).Heat index
The heat index value during July is calculated to be a scorching 104°F (40°C). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.One should consider that heat index numbers are for shaded settings and light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
In Perks, the average relative humidity in July is 76%.Rainfall
In Perks, in July, it is raining for 13.1 days, with typically 1.42" (36mm) of accumulated precipitation. In Perks, Illinois, during the entire year, the rain falls for 118.3 days and collects up to 13.03" (331mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Perks, the average length of the day in July is 14h and 26min.On the first day of the month, sunrise is at 5:39 am and sunset at 8:20 pm. On the last day of July, sunrise is at 6:00 am and sunset at 8:04 pm CDT.
Sunshine
The months with the most sunshine are June and July, with an average of 10.4h of sunshine.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 6 in July translates into these instructions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the hottest time of year?
How hot is it in July?
What is the average humidity in July?
How much does it rain in July?
When it does not snow?
What is the average length of the day in July?
When are sunrise and sunset in July?
What is the month with the most sunshine?
How long on average sun shines in July?
What is the month with the highest UV index?
How high is the UV index in July?
Average temperature in July
Perks, 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).
Average pressure in July
Perks, 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).
Average wind speed in July
Perks, 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).
Average humidity in July
Perks, 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%).
Average rainfall in July
Perks, 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").
Average rainfall days in July
Perks, 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).
Average snowfall in July
Perks, 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").
Average snowfall days in July
Perks, 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).
Average daylight in July /
Average sunshine in July
Perks, 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).
Average sunshine days in July
Perks, 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).
Average UV index in July
Perks, 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).
Average cloud cover in July
Perks, 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).
Average visibility in July
Perks, 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).
Perks, Illinois, USA
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