June weather forecast
Herrin, IL

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Weather in June

June, the first month of the summer in Herrin, is also a moderately hot month, with an average temperature fluctuating between 66.4°F (19.1°C) and 84.7°F (29.3°C).

Temperature

As Herrin, Illinois, welcomes June, the average high-temperature sees a rise, transitioning from 75.4°F (24.1°C) in May to a still moderately hot 84.7°F (29.3°C). Herrin anticipates an average minimum temperature of 66.4°F (19.1°C) in the month of June.

Heat index

In June, the average heat index is evaluated at a very hot 95°F (35°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', evaluates the perceived heat by adding the effect of moisture in the air. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

The average relative humidity in June is 76%.

Rainfall

In Herrin, in June, it is raining for 13.3 days, with typically 2.13" (54mm) of accumulated precipitation. Throughout the year, there are 137.6 rainfall days, and 23.03" (585mm) of precipitation is accumulated.

Snowfall

In Herrin, Illinois, snow does not fall in May through September.

Daylight

The month with the longest days is June, with an average of 14h and 42min of daylight.
On the first day of June in Herrin, sunrise is at 5:35 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:22 pm CDT.

Sunshine

June and July, with an average of 10.5h of sunshine, are months with the most sunshine in Herrin, Illinois.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: In June, a daily UV index of 6 turns into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Enhance your sun protection with tightly woven, yet airy clothing.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is June in Herrin?

In June, in Herrin, the average high-temperature is 84.7°F (29.3°C), and the average low-temperature is 66.4°F (19.1°C). In June, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is evaluated at 95°F (35°C).

What is the average humidity in June in Herrin?

In June, the average relative humidity is 76%.

How many days does it rain in June in Herrin?

In Herrin, Illinois, in June, it is raining for 13.3 days, with typically 2.13" (54mm) of accumulated precipitation.

When it does not snow in Herrin?

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

When are the longest days in Herrin?

June has the longest days of the year in Herrin, with an average of 14h and 42min of daylight.

How many hours of daylight does Herrin have in June?

In June, the average day length is 14h and 44min.

When are sunrise and sunset in June in Herrin?

On the first day of June, sunrise is at 5:35 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:22 pm CDT.

What are the months with the most sunshine in Herrin?

The months with the most sunshine in Herrin, Illinois, are June and July, with an average of 10.5h of sunshine.

How long on average sun shines in June in Herrin?

In Herrin, the average sunshine duration in June is 10.5h.

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

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

What is the UV index reading in June in Herrin?

The average daily maximum UV index in June in Herrin, Illinois, is 6. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.
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 June
Herrin, IL

Average temperature in June - Herrin, IL
  • Average high temperature in June: 84.7°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.6°F).

  • Average low temperature in June: 66.4°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average pressure in June
Herrin, IL

Average pressure in June - Herrin, IL
  • Average pressure in June: 29.94"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in June
Herrin, IL

Average wind speed in June - Herrin, IL
  • Average wind speed in June: 6.6mph

The windiest months (with the highest average wind speed) are January and February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in June
Herrin, IL

Average humidity in June - Herrin, IL
  • Average humidity in June: 76%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in June
Herrin, IL

Average rainfall in June - Herrin, IL
  • Average rainfall in June: 2.13"

The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.1").

Average rainfall days in June
Herrin, IL

Average rainfall days in June - Herrin, IL
  • Average rainfall days in June: 13.3 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is November (7.8 days).

Average snowfall in June
Herrin, IL

Average snowfall in June - Herrin, IL
  • Average snowfall in June: 0"

The months with the highest snowfall are January and February (0.94").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in June
Herrin, IL

Average snowfall days in June - Herrin, IL
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in June /
Average sunshine in June
Herrin, IL

Average daylight in June / Average sunshine in June - Herrin, IL
  • Average daylight in June: 14h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in June: 10h and 3min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in June
Herrin, IL

Average sunshine days in June - Herrin, IL
  • Average sunshine days in June: 13.3 days

The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is July (12.9 days).

Average UV index in June
Herrin, IL

Average UV index in June - Herrin, IL
  • Average UV index in June: 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 and December (UV index 2).

Average cloud cover in June
Herrin, IL

Average cloud cover in June - Herrin, IL
  • Average cloud cover in June: 28

The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June, August and September (Cloud cover 28).

Average visibility in June
Herrin, IL

Average visibility in June - Herrin, IL
  • Average visibility in June: 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).

Herrin, Illinois, USA

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