July weather forecast
Castle Junction, IL

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Weather in July

July, like June, in Castle Junction, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 81.7°F (27.6°C) and 65.1°F (18.4°C).

Temperature

In Castle Junction, Illinois, the month of July is known for its highest average temperatures, reaching a high of 81.7°F (27.6°C) and a low of 65.1°F (18.4°C).

Heat index

July's average heat index is computed to be a tropical 89.6°F (32°C). Exhaustion might be the outcome of enduring exposure and continuous activity, with a risk of heat cramps.
Heat index evaluations are typically in the context of light winds and shaded environments. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.

Humidity

January and July, with an average relative humidity of 83%, are the most humid months in Castle Junction.

Rainfall

In July, the rain falls for 15 days. Throughout July, 2.48" (63mm) of precipitation is accumulated. Throughout the year, there are 128 rainfall days, and 19.29" (490mm) of precipitation is accumulated.

Snowfall

In Castle Junction, snow does not fall in May through September.

Daylight

The average length of the day in July is 14h and 49min.
On the first day of July, sunrise is at 5:33 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 5:57 am and sunset at 8:20 pm CDT.

Sunshine

July has the most sunshine of the year in Castle Junction, with an average of 10.3h of sunshine.

UV index

June and July, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: In July, the maximum UV index of 6 suggests these recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. 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. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Updated: Jul 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year?

July is the month when Castle Junction sees the average highest temperatures, with a high of 81.7°F (27.6°C) and a low of 65.1°F (18.4°C).

What is the average July temperature?

The high-temperature, in July, in Castle Junction, is 81.7°F (27.6°C), while the low-temperature averages to 65.1°F (18.4°C). 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 89.6°F (32°C).

What is the most humid month?

The months with the highest humidity are January and July, with an average relative humidity of 83%.

What is the average humidity in July?

In Castle Junction, the average relative humidity in July is 83%.

How much does it rain in July?

In Castle Junction, in July, during 15 rainfall days, 2.48" (63mm) of precipitation is typically accumulated.

When it does not snow?

In Castle Junction, snow does not fall in May through September.

How many hours of daylight does Castle Junction have in July?

The average day length in July is 14h and 49min.

When is the sunrise / sunset in July?

On the first day of July, sunrise is at 5:33 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 5:57 am and sunset at 8:20 pm CDT.

What month has the most sunshine?

The month with the most sunshine is July, with an average of 10.3h of sunshine.

How many hours of sunshine does Castle Junction have in July?

In Castle Junction, the average sunshine duration in July is 10.3h.

What are the months with the highest UV index in Castle Junction?

June and July, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in July?

The average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability 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
Castle Junction, IL

Average temperature in July - Castle Junction, IL
  • Average high temperature in July: 81.7°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28.2°F).

  • Average low temperature in July: 65.1°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

Average pressure in July
Castle Junction, IL

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in July
Castle Junction, IL

Average wind speed in July - Castle Junction, IL
  • Average wind speed in July: 6.8mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

Average humidity in July
Castle Junction, IL

Average humidity in July - Castle Junction, IL
  • Average humidity in July: 83%

The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (71%).

Average rainfall in July
Castle Junction, IL

Average rainfall in July - Castle Junction, IL
  • Average rainfall in July: 2.48"

The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is December (0.75").

Average rainfall days in July
Castle Junction, IL

Average rainfall days in July - Castle Junction, IL
  • Average rainfall days in July: 15 days

The month with the highest number of rainy days is June (17 days).
The month with the least rainy days is January (4.2 days).

Average snowfall in July
Castle Junction, IL

Average snowfall in July - Castle Junction, IL
  • Average snowfall in July: 0"

The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Castle Junction, IL

Average snowfall days in July - Castle Junction, IL
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (10.3 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
Castle Junction, IL

Average daylight in July / Average sunshine in July - Castle Junction, IL
  • Average daylight in July: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in July: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in July
Castle Junction, IL

Average sunshine days in July - Castle Junction, IL
  • Average sunshine days in July: 11.9 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is June (10.8 days).

Average UV index in July
Castle Junction, IL

Average UV index in July - Castle Junction, IL
  • Average UV index in July: 6

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in July
Castle Junction, IL

Average cloud cover in July - Castle Junction, IL
  • Average cloud cover in July: 30

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in July
Castle Junction, IL

Average visibility in July - Castle Junction, 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).

Castle Junction, Illinois, USA

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