July weather forecast
Madison, IL

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Weather in July

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

Temperature

July, with average temperatures reaching a high of 86.2°F (30.1°C) and a low of 68.5°F (20.3°C), is the warmest month.

Heat index

July's heat index is calculated to be a very hot 98.6°F (37°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. 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' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In July, the average relative humidity is 77%.

Rainfall

In July, in Madison, the rain falls for 17.8 days. Throughout July, 3.58" (91mm) of precipitation is accumulated. In Madison, Illinois, during the entire year, the rain falls for 159.5 days and collects up to 36.06" (916mm) of precipitation.

Snowfall

In Madison, snow does not fall in April through October.

Daylight

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

Sunshine

In Madison, Illinois, 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. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 6 during July translates into the following guidance:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

What part of the year is the hottest in Madison?

The warmest time of the year in Madison, Illinois, is July, with temperatures averaging a high of 86.2°F (30.1°C) and a low of 68.5°F (20.3°C).

How hot does it get in Madison in July?

In Madison, 86.2°F (30.1°C) is the average high-temperature and 68.5°F (20.3°C) is the average low-temperature during July. In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 98.6°F (37°C).

What is the average humidity in July in Madison?

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

How many days does it rain in July in Madison?

In Madison, in July, it is raining for 17.8 days, with typically 3.58" (91mm) of accumulated precipitation.

When it does not snow in Madison?

April through October are months without snowfall.

How many hours of daylight does Madison have in July?

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

When is the sunrise / sunset in July in Madison?

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, sunrise is at 6:01 am and sunset at 8:12 pm CDT.

How many hours of sunshine does Madison have in July?

The average sunshine duration in July in Madison, Illinois, is 10.4h.

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

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

How high is the UV index in July in Madison?

In Madison, Illinois, the average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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Madison, Illinois, USA

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