July weather forecast
Irwin, IL

Share

Weather in July

July, like June, in Irwin, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 64.2°F (17.9°C) and 81.1°F (27.3°C).

Temperature

With average high and low temperatures of 81.1°F (27.3°C) and 64.2°F (17.9°C) respectively, July is Irwin's warmest month.

Heat index

The heat index value for July is evaluated at a hot 87.8°F (31°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.

Humidity

The most humid month is July, with an average relative humidity of 85%.

Rainfall

In Irwin, in July, during 17.4 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, in Irwin, there are 142.1 rainfall days, and 22.56" (573mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in July is 14h and 47min.
On the first day of the month, sunrise is at 5:23 am and sunset at 8:28 pm. On the last day of July, sunrise is at 5:47 am and sunset at 8:09 pm CDT.

Sunshine

The months with the most sunshine in Irwin are June and July, with an average of 9.7h of sunshine.

UV index

The months with the highest UV index are June and July, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 6 during July morphs into the following directions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
[Resources]

Frequently asked questions

What are the warmest months in Irwin?

July is the warmest month, exhibiting average temperatures of 81.1°F (27.3°C) at the peak and 64.2°F (17.9°C) at the base.

What is the usual temperature for Irwin in July?

The average high-temperature and low-temperature during July are 81.1°F (27.3°C) and 64.2°F (17.9°C) respectively. In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 87.8°F (31°C).

What is the most humid month in Irwin?

July is the most humid month in Irwin, with an average relative humidity of 85%.

What is the average humidity in July in Irwin?

The average relative humidity in July in Irwin, Illinois, is 85%.

How many days does it rain in July in Irwin?

In Irwin, during July, the rain falls for 17.4 days and regularly aggregates up to 2.4" (61mm) of precipitation.

When it does not snow in Irwin?

May through September are months without snowfall in Irwin.

How many hours of daylight does Irwin have in July?

In Irwin, Illinois, the average day length in July is 14h and 47min.

When is the sunrise / sunset in July in Irwin?

On the first day of July in Irwin, Illinois, sunrise is at 5:23 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:09 pm CDT.

What are the months with the most sunshine in Irwin?

The months with the most sunshine in Irwin are June and July, with an average of 9.7h of sunshine.

How long on average sun shines in July in Irwin?

In Irwin, the average sunshine duration in July is 9.7h.

What is the month with the highest UV index in Irwin?

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

How high is the UV index in July in Irwin?

In Irwin, Illinois, the average daily maximum UV index in July is 6. A UV Index value 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
Irwin, IL

Average temperature in July - Irwin, IL
  • Average high temperature in July: 81.1°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30°F).

  • Average low temperature in July: 64.2°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

[Resources]

Average pressure in July
Irwin, IL

Average pressure in July - Irwin, IL
  • Average pressure in July: 29.97"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

[Resources]

Average wind speed in July
Irwin, IL

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

The windiest months (with the highest average wind speed) are January and April (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

[Resources]

Average humidity in July
Irwin, IL

Average humidity in July - Irwin, IL
  • Average humidity in July: 85%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).

[Resources]

Average rainfall in July
Irwin, IL

Average rainfall in July - Irwin, IL
  • Average rainfall in July: 2.4"

The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is February (1.06").

[Resources]

Average rainfall days in July
Irwin, IL

Average rainfall days in July - Irwin, IL
  • Average rainfall days in July: 17.4 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (5 days).

[Resources]

Average snowfall in July
Irwin, IL

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

The month with the highest snowfall is January (2.17").
The months with the least snowfall are May, June, July, August and September (0").

[Resources]

Average snowfall days in July
Irwin, IL

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

The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

[Resources]

Average daylight in July /
Average sunshine in July
Irwin, IL

Average daylight in July / Average sunshine in July - Irwin, 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 18min).

  • Average sunshine in July: 9h and 4min

The months with the most sunshine are June and July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

[Resources]

Average sunshine days in July
Irwin, IL

Average sunshine days in July - Irwin, IL
  • Average sunshine days in July: 9.3 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (9.3 days).

[Resources]

Average UV index in July
Irwin, IL

Average UV index in July - Irwin, IL
  • Average UV index in July: 6

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

[Resources]

Average cloud cover in July
Irwin, IL

Average cloud cover in July - Irwin, IL
  • Average cloud cover in July: 35

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).

[Resources]

Average visibility in July
Irwin, IL

Average visibility in July - Irwin, IL
  • Average visibility in July: 5mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

[Resources]

Irwin, Illinois, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location