July weather forecast
Huntsville, IL

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Weather in July

July, like June, in Huntsville, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 66.6°F (19.2°C) and 83.7°F (28.7°C).

Temperature

July is the month that records the highest temperatures, with averages ranging from a high of 83.7°F (28.7°C) to a low of 66.6°F (19.2°C).

Heat index

July's average heat index is computed to be a tropical 93.2°F (34°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.

Humidity

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

Rainfall

In Huntsville, in July, it is raining for 14.3 days, with typically 1.81" (46mm) of accumulated precipitation. In Huntsville, during the entire year, the rain falls for 132 days and collects up to 22.17" (563mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in July is 14h and 42min.
On the first day of July, sunrise is at 5:38 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:18 pm CDT.

Sunshine

The months with the most sunshine in Huntsville are June and July, with an average of 10.2h of sunshine.

UV index

The months with the highest UV index in Huntsville are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index, 6 during July, leads to the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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Frequently asked questions

What is the hottest time of year in Huntsville?

July is the warmest month in Huntsville, exhibiting average temperatures of 83.7°F (28.7°C) at the peak and 66.6°F (19.2°C) at the base.

How hot is it in Huntsville in July?

The average high-temperature and low-temperature during July are 83.7°F (28.7°C) and 66.6°F (19.2°C) respectively. In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, is computed to be 93.2°F (34°C).

What is the most humid month in Huntsville?

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

What is the average humidity in July in Huntsville?

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

How many days does it rain in July in Huntsville?

In July, in Huntsville, Illinois, the rain falls for 14.3 days. Throughout July, 1.81" (46mm) of precipitation is accumulated.

When it does not snow in Huntsville?

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

How many hours of daylight does Huntsville have in July?

In July, the average day length is 14h and 42min.

What time are sunrise and sunset in July in Huntsville?

On the first day of July in Huntsville, sunrise is at 5:38 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:18 pm CDT.

What are the months with the most sunshine in Huntsville?

June and July, with an average of 10.2h of sunshine, are months with the most sunshine in Huntsville, Illinois.

How long on average sun shines in July in Huntsville?

In Huntsville, the average sunshine duration in July is 10.2h.

When is the highest UV index in Huntsville?

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

What is the UV index intensity in July in Huntsville?

In July, the average daily maximum UV index in Huntsville, Illinois, is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to 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
Huntsville, IL

Average temperature in July - Huntsville, IL
  • Average high temperature in July: 83.7°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (32.7°F).

  • Average low temperature in July: 66.6°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

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Average pressure in July
Huntsville, IL

Average pressure in July - Huntsville, IL
  • Average pressure in July: 29.96"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in July
Huntsville, IL

Average wind speed in July - Huntsville, IL
  • Average wind speed in July: 6.3mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).

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Average humidity in July
Huntsville, IL

Average humidity in July - Huntsville, 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%).

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Average rainfall in July
Huntsville, IL

Average rainfall in July - Huntsville, IL
  • Average rainfall in July: 1.81"

The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is January (0.98").

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Average rainfall days in July
Huntsville, IL

Average rainfall days in July - Huntsville, IL
  • Average rainfall days in July: 14.3 days

The month with the highest number of rainy days is May (16.9 days).
The months with the least rainy days are January and February (5.3 days).

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Average snowfall in July
Huntsville, IL

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

The month with the highest snowfall is January (3.19").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in July
Huntsville, IL

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

The month with the highest number of snowfall days is January (7.8 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
Huntsville, IL

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in July: 10h and 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

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Average sunshine days in July
Huntsville, IL

Average sunshine days in July - Huntsville, IL
  • Average sunshine days in July: 14.3 days

The month with the most sunshine days is January (20 days).
The month with the least sunshine days is May (11.4 days).

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Average UV index in July
Huntsville, IL

Average UV index in July - Huntsville, 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
Huntsville, IL

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

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July, August and September (Cloud cover 30).

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Average visibility in July
Huntsville, IL

Average visibility in July - Huntsville, 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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Huntsville, Illinois, USA

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