July weather forecast
Roanoke, IL

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Weather in July

July, like June, in Roanoke, Illinois, is a moderately hot summer month, with an average temperature ranging between min 64.9°F (18.3°C) and max 81.1°F (27.3°C).

Temperature

In Roanoke, July is identified by the highest average temperatures, reaching a peak of 81.1°F (27.3°C) and a low of 64.9°F (18.3°C).

Heat index

The heat index for July is appraised at a hot 87.8°F (31°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Heat index evaluations are typically in the context of light winds and shaded environments. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. 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 quite important for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.

Humidity

With an average relative humidity of 85%, July is the most humid month in Roanoke.

Rainfall

In July, in Roanoke, the rain falls for 17.5 days. Throughout July, 2.24" (57mm) of precipitation is accumulated. In Roanoke, during the entire year, the rain falls for 147.1 days and collects up to 24.17" (614mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In July, the average length of the day is 14h and 46min.
On the first day of July, sunrise is at 5:29 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 8:13 pm CDT.

Sunshine

In Roanoke, the average sunshine in July is 9.8h.

UV index

June and July, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index, 6 during July, leads to the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
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 Roanoke?

July, with an average high of 81.1°F (27.3°C) and a low of 64.9°F (18.3°C), signifies the warmest month of the year in Roanoke, Illinois.

What is the usual temperature for Roanoke in July?

In July, in Roanoke, the average high-temperature is 81.1°F (27.3°C), and the average low-temperature is 64.9°F (18.3°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in July is appraised at 87.8°F (31°C).

What is the most humid month in Roanoke?

With an average relative humidity of 85%, July is the most humid month in Roanoke.

What is the average humidity in July in Roanoke?

The average relative humidity in July in Roanoke is 85%.

How much does it rain in Roanoke in July?

In Roanoke, in July, during 17.5 rainfall days, 2.24" (57mm) of precipitation is typically accumulated.

When it does not snow in Roanoke?

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

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

In July, the average day length is 14h and 46min.

When is the sunrise / sunset in July in Roanoke?

On the first day of July, sunrise is at 5:29 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 8:13 pm CDT.

How many hours of sunshine does Roanoke have in July?

In Roanoke, Illinois, the average sunshine duration in July is 9.8h.

What are the months with the highest UV index in Roanoke?

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

What is the UV index intensity in July in Roanoke?

In July, the average daily maximum UV index in Roanoke is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health 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
Roanoke, IL

Average temperature in July - Roanoke, IL
  • Average high temperature in July: 81.1°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.4°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 (18.5°F).

Average pressure in July
Roanoke, IL

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in July
Roanoke, IL

Average wind speed in July - Roanoke, IL
  • Average wind speed in July: 6.6mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in July
Roanoke, IL

Average humidity in July - Roanoke, IL
  • Average humidity in July: 85%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).

Average rainfall in July
Roanoke, IL

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

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is December (1.22").

Average rainfall days in July
Roanoke, IL

Average rainfall days in July - Roanoke, IL
  • Average rainfall days in July: 17.5 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (5.8 days).

Average snowfall in July
Roanoke, IL

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

The months with the highest snowfall are January and February (2.8").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Roanoke, IL

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

The month with the highest number of snowfall days is January (11 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
Roanoke, IL

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

  • Average sunshine in July: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in July
Roanoke, IL

Average sunshine days in July - Roanoke, IL
  • Average sunshine days in July: 9 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (9 days).

Average UV index in July
Roanoke, IL

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

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in July
Roanoke, IL

Average cloud cover in July - Roanoke, IL
  • Average cloud cover in July: 33

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

Average visibility in July
Roanoke, IL

Average visibility in July - Roanoke, 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).

Roanoke, Illinois, USA

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