July weather forecast
Hillsboro, IL

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Weather in July

July, the same as June, is a moderately hot summer month in Hillsboro, Illinois, with an average temperature ranging between max 83.8°F (28.8°C) and min 67.1°F (19.5°C).

Temperature

Hillsboro's July weather, marked by an average high temperature of 83.8°F (28.8°C) and an average low temperature of 67.1°F (19.5°C), is the warmest in the year.

Heat index

The heat index value during July is computed to be a torrid 95°F (35°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values hold particular significance for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

With an average relative humidity of 82%, July is the most humid month.

Rainfall

In Hillsboro, during July, the rain falls for 14.8 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, there are 138.5 rainfall days, and 24.33" (618mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Hillsboro.

Daylight

In Hillsboro, the average length of the day in July is 14h and 36min.
On the first day of July in Hillsboro, Illinois, sunrise is at 5:35 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 8:10 pm CDT.

Sunshine

In July, the average sunshine is 10.2h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index, 6 during July, leads to the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the hottest in Hillsboro?

With its average high temperature of 83.8°F (28.8°C) and a low of 67.1°F (19.5°C), July is regarded as the warmest month in Hillsboro.

How hot is July in Hillsboro?

In July, in Hillsboro, the average high-temperature is 83.8°F (28.8°C), and the average low-temperature is 67.1°F (19.5°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 95°F (35°C).

What is the most humid month in Hillsboro?

With an average relative humidity of 82%, July is the most humid month in Hillsboro.

What is the average humidity in July in Hillsboro?

In July, the average relative humidity in Hillsboro is 82%.

How much does it rain in Hillsboro in July?

In July, in Hillsboro, Illinois, the rain falls for 14.8 days. Throughout July, 2.24" (57mm) of precipitation is accumulated.

When it does not snow in Hillsboro?

April through October are months without snowfall in Hillsboro.

What is the average length of the day in July in Hillsboro?

In Hillsboro, Illinois, the average day length in July is 14h and 36min.

When is the sunrise / sunset in July in Hillsboro?

In July, on the first day of the month, sunrise is at 5:35 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 8:10 pm CDT.

How many hours of sunshine does Hillsboro have in July?

The average sunshine duration in July in Hillsboro, Illinois, is 10.2h.

When is the highest UV index in Hillsboro?

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

What is the UV index reading in July in Hillsboro?

In July, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe 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
Hillsboro, IL

Average temperature in July - Hillsboro, IL
  • Average high temperature in July: 83.8°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in July: 67.1°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average pressure in July
Hillsboro, IL

Average pressure in July - Hillsboro, 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 (29.92"Hg).

Average wind speed in July
Hillsboro, IL

Average wind speed in July - Hillsboro, IL
  • Average wind speed in July: 5.9mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).

Average humidity in July
Hillsboro, IL

Average humidity in July - Hillsboro, IL
  • Average humidity in July: 82%

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).

Average rainfall in July
Hillsboro, IL

Average rainfall in July - Hillsboro, IL
  • Average rainfall in July: 2.24"

The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is February (1.34").

Average rainfall days in July
Hillsboro, IL

Average rainfall days in July - Hillsboro, IL
  • Average rainfall days in July: 14.8 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (7 days).

Average snowfall in July
Hillsboro, IL

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

The month with the highest snowfall is February (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in July
Hillsboro, IL

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

The month with the highest number of snowfall days is January (6.2 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
Hillsboro, IL

Average daylight in July / Average sunshine in July - Hillsboro, 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 18min).

Average sunshine days in July
Hillsboro, IL

Average sunshine days in July - Hillsboro, IL
  • Average sunshine days in July: 13.5 days

The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is May (11.8 days).

Average UV index in July
Hillsboro, IL

Average UV index in July - Hillsboro, 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, November and December (UV index 2).

Average cloud cover in July
Hillsboro, IL

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

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and September (Cloud cover 29).

Average visibility in July
Hillsboro, IL

Average visibility in July - Hillsboro, 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).

Hillsboro, Illinois, USA

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