July weather forecast
Trenton, IL

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Weather in July

July, the same as June, is another warm summer month in Trenton, Illinois, with an average temperature fluctuating between 85.6°F (29.8°C) and 68°F (20°C).

Temperature

Trenton experiences its highest temperatures in July, with an average peak of 85.6°F (29.8°C) and a low of 68°F (20°C).

Heat index

The heat index value for July is estimated at a torrid 98.6°F (37°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', takes into account both air temperature and humidity to illustrate what people actually feel. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

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

Rainfall

In Trenton, in July, it is raining for 17.1 days, with typically 3.31" (84mm) of accumulated precipitation. In Trenton, during the entire year, the rain falls for 151.1 days and collects up to 30.43" (773mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in July in Trenton is 14h and 33min.
On the first day of July, sunrise is at 5:38 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:09 pm CDT.

Sunshine

In July, the average sunshine is 10.3h.

UV index

The months with the highest UV index are May 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 unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 6 in July leads to these recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest?

July proves to be the warmest month, recording an average peak temperature of 85.6°F (29.8°C) and a minimum temperature of 68°F (20°C).

How hot is it in Trenton in July?

In Trenton, in July, the average high-temperature is 85.6°F (29.8°C), and the average low-temperature is 68°F (20°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in July is estimated at 98.6°F (37°C).

What is the most humid month?

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

What is the average humidity in July?

The average relative humidity in July is 80%.

How much does it rain in July?

In Trenton, in July, during 17.1 rainfall days, 3.31" (84mm) of precipitation is typically accumulated.

When it does not snow?

In Trenton, snow does not fall in May through September.

What is the average length of the day in July?

In Trenton, the average day length in July is 14h and 33min.

What time are sunrise and sunset in July in Trenton?

In July, on the first day of the month, sunrise is at 5:38 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:09 pm CDT.

How many hours of sunshine does Trenton have in July?

In July, the average sunshine duration is 10.3h.

When is the highest UV index?

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

How high is the UV index in July?

In Trenton, Illinois, the average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high hazard to health 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
Trenton, IL

Average temperature in July - Trenton, IL
  • Average high temperature in July: 85.6°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in July: 68°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

Average pressure in July
Trenton, IL

Average pressure in July - Trenton, 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 (29.93"Hg).

Average wind speed in July
Trenton, IL

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

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

Average humidity in July
Trenton, IL

Average humidity in July - Trenton, 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
Trenton, IL

Average rainfall in July - Trenton, IL
  • Average rainfall in July: 3.31"

The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is February (1.5").

Average rainfall days in July
Trenton, IL

Average rainfall days in July - Trenton, IL
  • Average rainfall days in July: 17.1 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (8 days).

Average snowfall in July
Trenton, IL

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

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

Average snowfall days in July
Trenton, IL

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

The month with the highest number of snowfall days is January (7.5 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
Trenton, IL

Average daylight in July / Average sunshine in July - Trenton, IL
  • Average daylight in July: 14h and 3min

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 months with the least sunshine are January and February (Average sunshine: 4h and 36min).

Average sunshine days in July
Trenton, IL

Average sunshine days in July - Trenton, IL
  • Average sunshine days in July: 11 days

The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is July (11 days).

Average UV index in July
Trenton, IL

Average UV index in July - Trenton, 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
Trenton, IL

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

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).

Average visibility in July
Trenton, IL

Average visibility in July - Trenton, 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).

Trenton, Illinois, USA

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