July weather forecast
Willisville, IL

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Weather in July

July is a tropical summer month in Willisville, Illinois, with an average temperature varying between 87.3°F (30.7°C) and 68.5°F (20.3°C).

Temperature

Willisville witnesses the warmest weather in July, with temperatures averaging a high of 87.3°F (30.7°C) and a low of 68.5°F (20.3°C).

Heat index

The average heat index in July is evaluated at a fiery hot 102.2°F (39°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance 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.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

In Willisville, the average relative humidity in July is 77%.

Rainfall

In Willisville, in July, it is raining for 17.3 days, with typically 3.39" (86mm) of accumulated precipitation. In Willisville, during the entire year, the rain falls for 159.4 days and collects up to 37.2" (945mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In July, the average length of the day is 14h and 29min.
On the first day of the month, sunrise is at 5:39 am and sunset at 8:24 pm. On the last day of July, sunrise is at 6:01 am and sunset at 8:08 pm CDT.

Sunshine

The average sunshine in July is 10.4h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 6 during July translates into the following directions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. 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. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the hottest?

Willisville's temperature records reveal July as the warmest month, marked by average highs of 87.3°F (30.7°C) and lows of 68.5°F (20.3°C).

How hot is July?

The average high-temperature, in July, in Willisville, is 87.3°F (30.7°C), while the average low-temperature is 68.5°F (20.3°C). The average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, in July is evaluated at 102.2°F (39°C).

What is the average humidity in July?

The average relative humidity in July is 77%.

How much does it rain in July?

In Willisville, in July, during 17.3 rainfall days, 3.39" (86mm) of precipitation is typically accumulated.

When it does not snow?

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

How many hours of daylight does Willisville have in July?

In July, the average day length in Willisville is 14h and 29min.

When is the sunrise / sunset in July in Willisville?

On the first day of July, sunrise is at 5:39 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:08 pm CDT.

How many hours of sunshine does Willisville have in July?

In Willisville, the average sunshine duration in July is 10.4h.

When is the highest UV index?

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

What is the UV index reading in July?

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
Willisville, IL

Average temperature in July - Willisville, IL
  • Average high temperature in July: 87.3°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°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 (25.7°F).

Average pressure in July
Willisville, IL

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in July
Willisville, IL

Average wind speed in July - Willisville, IL
  • Average wind speed in July: 5.7mph

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity in July
Willisville, IL

Average humidity in July - Willisville, IL
  • Average humidity in July: 77%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in July
Willisville, IL

Average rainfall in July - Willisville, IL
  • Average rainfall in July: 3.39"

The wettest month (with the highest rainfall) is May (4.49").
The driest months (with the least rainfall) are February and September (2.13").

Average rainfall days in July
Willisville, IL

Average rainfall days in July - Willisville, IL
  • Average rainfall days in July: 17.3 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in July
Willisville, IL

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

The month with the highest snowfall is January (2.64").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Willisville, IL

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

The month with the highest number of snowfall days is January (7.1 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
Willisville, IL

Average daylight in July / Average sunshine in July - Willisville, IL
  • Average daylight in July: 14h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in July: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in July
Willisville, IL

Average sunshine days in July - Willisville, IL
  • Average sunshine days in July: 11.3 days

The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is May (10.4 days).

Average UV index in July
Willisville, IL

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

The months with the highest UV index are 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
Willisville, IL

Average cloud cover in July - Willisville, IL
  • Average cloud cover in July: 30

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 28).

Average visibility in July
Willisville, IL

Average visibility in July - Willisville, 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).

Willisville, Illinois, USA

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