July weather forecast
Sheffield, IL

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Weather in July

July, the same as June, is a moderately hot summer month in Sheffield, Illinois, with an average temperature fluctuating between 64.6°F (18.1°C) and 81°F (27.2°C).

Temperature

July registers as the month with the highest average temperatures, reaching 81°F (27.2°C) at its peak and 64.6°F (18.1°C) at the lowest.

Heat index

In July, the average heat index is evaluated at a hot 87.8°F (31°C). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.
In reference to the heat index, it's for places in shade and with a slight wind. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

July is the most humid month, with an average relative humidity of 84%.

Rainfall

In Sheffield, Illinois, during July, the rain falls for 17.1 days and regularly aggregates up to 2.87" (73mm) of precipitation. In Sheffield, during the entire year, the rain falls for 147.2 days and collects up to 29.17" (741mm) of precipitation.

Snowfall

In Sheffield, snow does not fall in May through September.

Daylight

In Sheffield, the average length of the day in July is 14h and 49min.
On the first day of July, sunrise is at 5:29 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 8:16 pm CDT.

Sunshine

June and July, with an average of 10h of sunshine, are months with the most sunshine.

UV index

June and July, 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 hazard from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index, 6 in July, converts into the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. 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. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Updated: Jun 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

Sheffield's warmest weather arrives in July, when temperatures average a high of 81°F (27.2°C) and a low of 64.6°F (18.1°C).

What is the average July temperature?

July temperatures vary between a high-temperature of 81°F (27.2°C) and a low-temperature of 64.6°F (18.1°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in July is evaluated at 87.8°F (31°C).

What is the most humid month?

The most humid month is July, with an average relative humidity of 84%.

What is the average humidity in July?

The average relative humidity in July is 84%.

How many days does it rain in July in Sheffield?

In July, the rain falls for 17.1 days. Throughout July, 2.87" (73mm) of precipitation is accumulated.

When it does not snow?

In Sheffield, snow does not fall in May through September.

How many hours of daylight does Sheffield have in July?

In July, the average day length is 14h and 49min.

When is the sunrise / sunset in July?

In July, on the first day of the month, sunrise is at 5:29 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 8:16 pm CDT.

What are the months with the most sunshine?

June and July, with an average of 10h of sunshine, are months with the most sunshine.

How long on average sun shines in July?

In July, the average sunshine duration is 10h.

What are the months with the highest UV index?

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

What is the UV index intensity 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 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
Sheffield, IL

Average temperature in July - Sheffield, IL
  • Average high temperature in July: 81°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in July: 64.6°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).

Average pressure in July
Sheffield, IL

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

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in July
Sheffield, IL

Average wind speed in July - Sheffield, IL
  • Average wind speed in July: 6.7mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in July
Sheffield, IL

Average humidity in July - Sheffield, IL
  • Average humidity in July: 84%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

Average rainfall in July
Sheffield, IL

Average rainfall in July - Sheffield, IL
  • Average rainfall in July: 2.87"

The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and December (1.42").

Average rainfall days in July
Sheffield, IL

Average rainfall days in July - Sheffield, IL
  • Average rainfall days in July: 17.1 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.6 days).

Average snowfall in July
Sheffield, IL

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

The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Sheffield, IL

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

The month with the highest number of snowfall days is January (11.4 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
Sheffield, IL

Average daylight in July / Average sunshine in July - Sheffield, 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 0min

The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in July
Sheffield, IL

Average sunshine days in July - Sheffield, IL
  • Average sunshine days in July: 10.6 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (10.2 days).

Average UV index in July
Sheffield, IL

Average UV index in July - Sheffield, 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
Sheffield, IL

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

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

Average visibility in July
Sheffield, IL

Average visibility in July - Sheffield, IL
  • Average visibility in July: 5mi

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

Sheffield, Illinois, USA

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