July weather forecast
East Alton, IL

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Weather in July

July, the same as June, is a moderately hot summer month in East Alton, Illinois, with an average temperature fluctuating between 85.3°F (29.6°C) and 67.6°F (19.8°C).

Temperature

The average temperatures reach their apex in July, averaging 85.3°F (29.6°C) at the high end and 67.6°F (19.8°C) at the low end.

Heat index

Throughout July, the heat index is computed to be a torrid 96.8°F (36°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The most humid month is July, with an average relative humidity of 80%.

Rainfall

In East Alton, during July, the rain falls for 16.3 days and regularly aggregates up to 2.48" (63mm) of precipitation. In East Alton, during the entire year, the rain falls for 138 days and collects up to 23.9" (607mm) of precipitation.

Snowfall

In East Alton, snow does not fall in May through October.

Daylight

The average length of the day in July is 14h and 35min.
On the first day of July in East Alton, sunrise is at 5:39 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

In July, the average sunshine in East Alton is 10.3h.

UV index

The months with the highest UV index in East Alton are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 6 during July translates into the following directions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.
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 East Alton?

July stands out as East Alton's warmest month, with temperatures ranging between an average high of 85.3°F (29.6°C) and a low of 67.6°F (19.8°C).

How hot is it in East Alton in July?

In East Alton, 85.3°F (29.6°C) is the average high-temperature and 67.6°F (19.8°C) is the average low-temperature during July. In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is computed to be 96.8°F (36°C).

What is the most humid month in East Alton?

With an average relative humidity of 80%, July is the most humid month.

What is the average humidity in July in East Alton?

The average relative humidity in July in East Alton is 80%.

How many days does it rain in July in East Alton?

In East Alton, during July, the rain falls for 16.3 days and regularly aggregates up to 2.48" (63mm) of precipitation.

When it does not snow in East Alton?

In East Alton, snow does not fall in May through October.

What is the average length of the day in July in East Alton?

In July, the average day length in East Alton is 14h and 35min.

When is the sunrise / sunset in July in East Alton?

On the first day of July in East Alton, sunrise is at 5:39 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 East Alton have in July?

In July, the average sunshine duration in East Alton, Illinois, is 10.3h.

What are the months with the highest UV index in East Alton?

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

What is the UV index reading in July in East Alton?

The average daily maximum UV index in July in East Alton 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
East Alton, IL

Average temperature in July - East Alton, IL
  • Average high temperature in July: 85.3°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in July: 67.6°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in July
East Alton, IL

Average pressure in July - East Alton, 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
East Alton, IL

Average wind speed in July - East Alton, IL
  • Average wind speed in July: 5.7mph

The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

Average humidity in July
East Alton, IL

Average humidity in July - East Alton, IL
  • Average humidity in July: 80%

The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in July
East Alton, IL

Average rainfall in July - East Alton, IL
  • Average rainfall in July: 2.48"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is February (1.14").

Average rainfall days in July
East Alton, IL

Average rainfall days in July - East Alton, IL
  • Average rainfall days in July: 16.3 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (5.6 days).

Average snowfall in July
East Alton, IL

Average snowfall in July - East Alton, IL
  • Average snowfall in July: 0"

The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in July
East Alton, IL

Average snowfall days in July - East Alton, IL
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (6 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
East Alton, IL

Average daylight in July / Average sunshine in July - East Alton, 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 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).

Average sunshine days in July
East Alton, IL

Average sunshine days in July - East Alton, IL
  • Average sunshine days in July: 12.3 days

The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is July (12.3 days).

Average UV index in July
East Alton, IL

Average UV index in July - East Alton, 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
East Alton, IL

Average cloud cover in July - East Alton, IL
  • Average cloud cover in July: 29

The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).

Average visibility in July
East Alton, IL

Average visibility in July - East Alton, 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).

East Alton, Illinois, USA

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