July weather forecast
Casey, IL

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Weather in July

July, the same as June, is a moderately hot summer month in Casey, Illinois, with an average temperature varying between 66.4°F (19.1°C) and 82.9°F (28.3°C).

Temperature

The warmest temperatures occur during July, when averages reach a peak of 82.9°F (28.3°C) and a low of 66.4°F (19.1°C).

Heat index

Throughout July, the heat index is computed to be a tropical 91.4°F (33°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
One should be cognizant that the heat index values are tailored for shaded spots and mild 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 'apparent temperature' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

July is the most humid month, with an average relative humidity of 83%.

Rainfall

In July, the rain falls for 12.5 days. Throughout July, 1.22" (31mm) of precipitation is accumulated. In Casey, Illinois, during the entire year, the rain falls for 115.9 days and collects up to 11.26" (286mm) of precipitation.

Snowfall

In Casey, snow does not fall in May through October.

Daylight

In July, the average length of the day is 14h and 37min.
On the first day of the month, sunrise is at 5:29 am and sunset at 8:22 pm. On the last day of July, sunrise is at 5:51 am and sunset at 8:04 pm CDT.

Sunshine

The average sunshine in July is 10.1h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 6 during July leads to these instructions:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.

Frequently asked questions

What is the warmest month?

In Casey, July records the average highest temperatures, peaking at 82.9°F (28.3°C) and reaching a low of 66.4°F (19.1°C).

How hot is July?

The high-temperature, in July, in Casey, records 82.9°F (28.3°C), while the low-temperature is 66.4°F (19.1°C). In July, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is computed to be 91.4°F (33°C).

What is the most humid month?

The most humid month is July, with an average relative humidity of 83%.

What is the average humidity in July?

In Casey, the average relative humidity in July is 83%.

How many days does it rain in July?

In Casey, in July, it is raining for 12.5 days, with typically 1.22" (31mm) of accumulated precipitation.

When it does not snow in Casey?

May through October are months without snowfall.

How many hours of daylight does Casey have in July?

In Casey, the average day length in July is 14h and 37min.

When are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 5:29 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:04 pm CDT.

How many hours of sunshine does Casey have in July?

In Casey, the average sunshine duration in July is 10.1h.

What are the months with the highest UV index?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

How high is the UV index in July?

The average daily maximum UV index in July is 6. A UV Index value of 6 to 7 symbolizes 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
Casey, IL

Average temperature in July - Casey, IL
  • Average high temperature in July: 82.9°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34.7°F).

  • Average low temperature in July: 66.4°F

The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average pressure in July
Casey, IL

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in July
Casey, IL

Average wind speed in July - Casey, IL
  • Average wind speed in July: 6.1mph

The windiest months (with the highest average wind speed) are January and February (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.1mph).

Average humidity in July
Casey, IL

Average humidity in July - Casey, IL
  • Average humidity in July: 83%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

Average rainfall in July
Casey, IL

Average rainfall in July - Casey, IL
  • Average rainfall in July: 1.22"

The wettest month (with the highest rainfall) is April (1.54").
The driest month (with the least rainfall) is February (0.47").

Average rainfall days in July
Casey, IL

Average rainfall days in July - Casey, IL
  • Average rainfall days in July: 12.5 days

The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is February (6 days).

Average snowfall in July
Casey, IL

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

The month with the highest snowfall is December (0.47").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in July
Casey, IL

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

The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in July / Average sunshine in July - Casey, IL
  • Average daylight in July: 14h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in July: 10h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in July
Casey, IL

Average sunshine days in July - Casey, IL
  • Average sunshine days in July: 14.3 days

The month with the most sunshine days is October (21.2 days).
The month with the least sunshine days is May (12.4 days).

Average UV index in July
Casey, IL

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

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

Average cloud cover in July
Casey, IL

Average cloud cover in July - Casey, IL
  • Average cloud cover in July: 31

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in July
Casey, IL

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

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

Casey, Illinois, USA

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