July weather forecast
Champaign, IL

An old building that works as an auditorium within the University of Illinois in Champaign
An old building that works as an auditorium within the University of Illinois in Champaign

Weather in July

July, like June, in Champaign, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 65.1°F (18.4°C) and 81.1°F (27.3°C).

Temperature

The warmest month is July, with an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 65.1°F (18.4°C).

Heat index

In July, the average heat index is calculated to be a tropical 87.8°F (31°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, differences in body mass, height, and shape, wind, and pregnancy affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The most humid month is July, with an average relative humidity of 85%.

Rainfall

In July, the rain falls for 14.7 days. Throughout July, 1.69" (43mm) of precipitation is accumulated. In Champaign, during the entire year, the rain falls for 129.9 days and collects up to 18.15" (461mm) of precipitation.

Snowfall

In Champaign, Illinois, snow does not fall in May through October.

Daylight

In Champaign, the average length of the day in July is 14h and 41min.
On the first day of July in Champaign, sunrise is at 5:27 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:08 pm CDT.

Sunshine

In July, the average sunshine in Champaign is 9.9h.

UV index

The months with the highest UV index in Champaign, Illinois, are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 6 in July interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the warmest month in Champaign?

July is the warmest month in Champaign, Illinois, with an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 65.1°F (18.4°C).

What is the temperature in July in Champaign?

In July, the average high-temperature is 81.1°F (27.3°C), and the average low-temperature is 65.1°F (18.4°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in July is calculated to be 87.8°F (31°C).

What is the most humid month in Champaign?

The most humid month in Champaign, Illinois, is July, with an average relative humidity of 85%.

What is the average humidity in July in Champaign?

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

How many days does it rain in July in Champaign?

In Champaign, in July, during 14.7 rainfall days, 1.69" (43mm) of precipitation is typically accumulated.

When it does not snow in Champaign?

In Champaign, Illinois, snow does not fall in May through October.

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

In July, the average day length in Champaign is 14h and 41min.

When are sunrise and sunset in July in Champaign?

On the first day of July in Champaign, Illinois, sunrise is at 5:27 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:08 pm CDT.

How long on average sun shines in July in Champaign?

The average sunshine duration in July in Champaign, Illinois, is 9.9h.

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

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

What is the UV index reading in July in Champaign?

In Champaign, the average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Champaign, IL

Average temperature in July - Champaign, 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 (31.8°F).

  • Average low temperature in July: 65.1°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

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Average pressure in July
Champaign, IL

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

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Average wind speed in July
Champaign, IL

Average wind speed in July - Champaign, IL
  • Average wind speed in July: 6.4mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in July
Champaign, IL

Average humidity in July - Champaign, 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 (70%).

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Average rainfall in July
Champaign, IL

Average rainfall in July - Champaign, IL
  • Average rainfall in July: 1.69"

The wettest month (with the highest rainfall) is April (2.24").
The driest month (with the least rainfall) is September (0.94").

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Average rainfall days in July
Champaign, IL

Average rainfall days in July - Champaign, IL
  • Average rainfall days in July: 14.7 days

The month with the highest number of rainy days is May (15.3 days).
The months with the least rainy days are January and February (6 days).

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Average snowfall in July
Champaign, IL

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

The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in July
Champaign, IL

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

The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Champaign, IL

Average daylight in July / Average sunshine in July - Champaign, IL
  • Average daylight in July: 14h and 41min

The month with the longest days is June (Average daylight: 14h and 59min).
The month with the shortest days is December (Average daylight: 9h and 22min).

  • Average sunshine in July: 9h and 54min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in July
Champaign, IL

Average sunshine days in July - Champaign, IL
  • Average sunshine days in July: 11.8 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.8 days).

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Average UV index in July
Champaign, IL

Average UV index in July - Champaign, 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).

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Average cloud cover in July
Champaign, IL

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

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 31).

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Average visibility in July
Champaign, IL

Average visibility in July - Champaign, 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).

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