July weather forecast
Madison, IL

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Weather in July

July is a hot summer month in Madison, Illinois, with an average temperature ranging between min 68.5°F (20.3°C) and max 86.2°F (30.1°C).

Temperature

Temperature readings reach their annual highs in July, averaging 86.2°F (30.1°C) and a minimum average of 68.5°F (20.3°C).

Heat index

For most parts of July, the heat index is appraised at a very hot 98.6°F (37°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

The average relative humidity in July is 77%.

Rainfall

In Madison, during July, the rain falls for 17.8 days and regularly aggregates up to 3.58" (91mm) of precipitation. Throughout the year, there are 159.5 rainfall days, and 36.06" (916mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in July in Madison is 14h and 34min.
On the first day of July, sunrise is at 5:40 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:12 pm CDT.

Sunshine

The average sunshine in July is 10.4h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Madison. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 6 in July transforms into this advice:
Shun overexposure. Protection from sun ravages is indispensable. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months?

Madison experiences its average highest temperatures in July, reaching a peak of 86.2°F (30.1°C) and a minimum of 68.5°F (20.3°C).

How hot is it in July?

The high-temperature, in July, in Madison, records 86.2°F (30.1°C), while the low-temperature is 68.5°F (20.3°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, is appraised at 98.6°F (37°C).

What is the average humidity in July?

The average relative humidity in July is 77%.

How many days does it rain in July?

In Madison, in July, during 17.8 rainfall days, 3.58" (91mm) of precipitation is typically accumulated.

When it does not snow?

April through October are months without snowfall.

How many hours of daylight does Madison have in July?

In Madison, the average day length in July is 14h and 34min.

When is the sunrise / sunset in July?

In July, on the first day of the month, sunrise is at 5:40 am and sunset at 8:29 pm. On the last day of the month, in Madison, sunrise is at 6:01 am and sunset at 8:12 pm CDT.

How many hours of sunshine does Madison have in July?

In July, the average sunshine duration is 10.4h.

What are the months with the highest UV index?

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

What is the UV index intensity in July?

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

Average temperature in July - Madison, IL
  • Average high temperature in July: 86.2°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (37.2°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 (24.3°F).

Average pressure in July
Madison, IL

Average pressure in July - Madison, 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
Madison, IL

Average wind speed in July - Madison, IL
  • Average wind speed in July: 5.5mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).

Average humidity in July
Madison, IL

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

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).

Average rainfall in July
Madison, IL

Average rainfall in July - Madison, IL
  • Average rainfall in July: 3.58"

The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is February (1.93").

Average rainfall days in July
Madison, IL

Average rainfall days in July - Madison, IL
  • Average rainfall days in July: 17.8 days

The months with the highest number of rainy days are May and July (17.8 days).
The month with the least rainy days is January (8.4 days).

Average snowfall in July
Madison, IL

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

The month with the highest snowfall is February (2.4").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in July
Madison, IL

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

The month with the highest number of snowfall days is January (6.3 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
Madison, IL

Average daylight in July / Average sunshine in July - Madison, IL
  • Average daylight in July: 14h and 4min

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 30min).

  • 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
Madison, IL

Average sunshine days in July - Madison, IL
  • Average sunshine days in July: 10.3 days

The month with the most sunshine days is December (18 days).
The month with the least sunshine days is June (10.1 days).

Average UV index in July
Madison, IL

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

The months with the highest UV index are May, 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
Madison, IL

Average cloud cover in July - Madison, IL
  • Average cloud cover in July: 29

The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 28).

Average visibility in July
Madison, IL

Average visibility in July - Madison, 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).

Madison, Illinois, USA

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