June weather forecast
Caseyville, IL

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Weather in June

June, the first month of the summer in Caseyville, is also a moderately hot month, with an average temperature ranging between max 83.3°F (28.5°C) and min 66.6°F (19.2°C).

Temperature

The coming of June brings a minor shift in Caseyville's weather, with average high-temperatures adjusting from May's moderately hot 74.5°F (23.6°C) to a still warm 83.3°F (28.5°C). Caseyville's nighttime temperature in June falls to an average of 66.6°F (19.2°C).

Heat index

The heat index value for June is calculated to be a hot 91.4°F (33°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

The average relative humidity in June in Caseyville is 77%.

Rainfall

In Caseyville, Illinois, during June, the rain falls for 15.5 days and regularly aggregates up to 3.9" (99mm) of precipitation. In Caseyville, during the entire year, the rain falls for 149.9 days and collects up to 33.94" (862mm) of precipitation.

Snowfall

April through August and October are months without snowfall in Caseyville.

Daylight

With an average of 14h and 48min of daylight, June has the longest days of the year in Caseyville.
On the first day of the month, sunrise is at 5:36 am and sunset at 8:19 pm. On the last day of June, in Caseyville, sunrise is at 5:39 am and sunset at 8:28 pm CDT.

Sunshine

June has the most sunshine of the year in Caseyville, with an average of 10.5h of sunshine.

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 health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum UV index of 6 in June translates into the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
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Frequently asked questions

Is it hot in Caseyville during June?

The average high-temperature and low-temperature during June are 83.3°F (28.5°C) and 66.6°F (19.2°C) respectively. The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in June is calculated to be 91.4°F (33°C).

What is the average humidity in June in Caseyville?

The average relative humidity in June is 77%.

How many days does it rain in June in Caseyville?

In June, the rain falls for 15.5 days. Throughout June, 3.9" (99mm) of precipitation is accumulated.

When it does not snow in Caseyville?

In Caseyville, Illinois, snow does not fall in April through August and October.

When are the longest days in Caseyville?

June has the longest days of the year in Caseyville, with an average of 14h and 48min of daylight.

How many hours of daylight does Caseyville have in June?

In June, the average day length in Caseyville is 14h and 49min.

When is the sunrise / sunset in June in Caseyville?

On the first day of June, sunrise is at 5:36 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:28 pm CDT.

What month has the most sunshine in Caseyville?

The month with the most sunshine in Caseyville is June, with an average of 10.5h of sunshine.

How long on average sun shines in June in Caseyville?

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

What are the months with the highest UV index in Caseyville?

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

What is the UV index intensity in June in Caseyville?

In June, the average daily maximum UV index in Caseyville 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 June
Caseyville, IL

Average temperature in June - Caseyville, IL
  • Average high temperature in June: 83.3°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 (37.4°F).

  • Average low temperature in June: 66.6°F

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in June
Caseyville, IL

Average pressure in June - Caseyville, IL
  • Average pressure in June: 29.92"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).

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Average wind speed in June
Caseyville, IL

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

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).

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Average humidity in June
Caseyville, IL

Average humidity in June - Caseyville, IL
  • Average humidity in June: 77%

The months with the highest relative humidity are May, July and August (79%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in June
Caseyville, IL

Average rainfall in June - Caseyville, IL
  • Average rainfall in June: 3.9"

The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (1.77").

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Average rainfall days in June
Caseyville, IL

Average rainfall days in June - Caseyville, IL
  • Average rainfall days in June: 15.5 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (7.8 days).

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Average snowfall in June
Caseyville, IL

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

The month with the highest snowfall is January (2.13").
The months with the least snowfall are April, May, June, July, August and October (0").

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Average snowfall days in June
Caseyville, IL

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

The month with the highest number of snowfall days is January (7 days).
The months with the least snowfall days are May, June, July and August (0 days).

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

Average daylight in June / Average sunshine in June - Caseyville, IL
  • Average daylight in June: 14h and 5min

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 June: 10h and 3min

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

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Average sunshine days in June
Caseyville, IL

Average sunshine days in June - Caseyville, IL
  • Average sunshine days in June: 11.8 days

The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is May (11.6 days).

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Average UV index in June
Caseyville, IL

Average UV index in June - Caseyville, 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, November and December (UV index 2).

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Average cloud cover in June
Caseyville, IL

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

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

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Average visibility in June
Caseyville, IL

Average visibility in June - Caseyville, 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).

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Caseyville, Illinois, USA

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