July weather forecast
Coal Valley, IL

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Weather in July

July, like June, in Coal Valley, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 81.7°F (27.6°C) and 64.9°F (18.3°C).

Temperature

July, on average, is the warmest month, registering a high temperature of 81.7°F (27.6°C) and a low of 64.9°F (18.3°C).

Heat index

In July, the heat index is evaluated at a tropical 89.6°F (32°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', takes into account both air temperature and humidity to illustrate what people actually feel. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely vital to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.

Humidity

The months with the highest humidity in Coal Valley are January and July, with an average relative humidity of 83%.

Rainfall

In July, the rain falls for 8.6 days. Throughout July, 0.71" (18mm) of precipitation is accumulated. Throughout the year, there are 75.2 rainfall days, and 5.79" (147mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall in Coal Valley.

Daylight

The average length of the day in July in Coal Valley is 14h and 49min.
On the first day of the month, sunrise is at 5:32 am and sunset at 8:39 pm. On the last day of July, in Coal Valley, sunrise is at 5:56 am and sunset at 8:19 pm CDT.

Sunshine

July has the most sunshine of the year, with an average of 10.2h of sunshine.

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: The UV index of 6 in July translates into these instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year in Coal Valley?

Temperature records in Coal Valley, Illinois, mark July as the warmest month, with highs averaging 81.7°F (27.6°C) and lows at 64.9°F (18.3°C).

What is the usual temperature for Coal Valley in July?

In July, the average high-temperature and low-temperature in Coal Valley, Illinois, are 81.7°F (27.6°C) and 64.9°F (18.3°C) respectively. In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is evaluated at 89.6°F (32°C).

What are the most humid months in Coal Valley?

The months with the highest humidity in Coal Valley, Illinois, are January and July, with an average relative humidity of 83%.

What is the average humidity in July in Coal Valley?

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

How many days does it rain in July in Coal Valley?

In Coal Valley, Illinois, during July, the rain falls for 8.6 days and regularly aggregates up to 0.71" (18mm) of precipitation.

When it does not snow in Coal Valley?

In Coal Valley, Illinois, snow does not fall in May through September.

What is the average length of the day in July in Coal Valley?

In Coal Valley, Illinois, the average day length in July is 14h and 49min.

What time are sunrise and sunset in July in Coal Valley?

In July, on the first day of the month, sunrise is at 5:32 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 8:19 pm CDT.

What month has the most sunshine in Coal Valley?

The month with the most sunshine is July, with an average of 10.2h of sunshine.

How many hours of sunshine does Coal Valley have in July?

In July, the average sunshine duration is 10.2h.

What is the month with the highest UV index in Coal Valley?

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

What is the UV index reading in July in Coal Valley?

In July, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health threat 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
Coal Valley, IL

Average temperature in July - Coal Valley, IL
  • Average high temperature in July: 81.7°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28.2°F).

  • Average low temperature in July: 64.9°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16°F).

Average pressure in July
Coal Valley, IL

Average pressure in July - Coal Valley, IL
  • Average pressure in July: 29.96"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in July
Coal Valley, IL

Average wind speed in July - Coal Valley, IL
  • Average wind speed in July: 6.8mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

Average humidity in July
Coal Valley, IL

Average humidity in July - Coal Valley, IL
  • Average humidity in July: 83%

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

Average rainfall in July
Coal Valley, IL

Average rainfall in July - Coal Valley, IL
  • Average rainfall in July: 0.71"

The wettest month (with the highest rainfall) is May (0.94").
The driest month (with the least rainfall) is December (0.24").

Average rainfall days in July
Coal Valley, IL

Average rainfall days in July - Coal Valley, IL
  • Average rainfall days in July: 8.6 days

The month with the highest number of rainy days is May (10.4 days).
The month with the least rainy days is January (1.8 days).

Average snowfall in July
Coal Valley, IL

Average snowfall in July - Coal Valley, IL
  • Average snowfall in July: 0"

The month with the highest snowfall is January (1.06").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Coal Valley, IL

Average snowfall days in July - Coal Valley, IL
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (5.5 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
Coal Valley, IL

Average daylight in July / Average sunshine in July - Coal Valley, 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: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in July
Coal Valley, IL

Average sunshine days in July - Coal Valley, IL
  • Average sunshine days in July: 17.6 days

The month with the most sunshine days is December (25.8 days).
The month with the least sunshine days is June (15.4 days).

Average UV index in July
Coal Valley, IL

Average UV index in July - Coal Valley, 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 January (UV index 1).

Average cloud cover in July
Coal Valley, IL

Average cloud cover in July - Coal Valley, IL
  • Average cloud cover in July: 31

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in July
Coal Valley, IL

Average visibility in July - Coal Valley, 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).

Coal Valley, Illinois, USA

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