June weather forecast
Carterville, IL

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Weather in June

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

Temperature

With the onset of June, Carterville's average high-temperature experiences a rise, moving from May's warm 75.4°F (24.1°C) to a still moderately hot 84.7°F (29.3°C). Throughout June, the average low-temperature dips to a comfortable 66.4°F (19.1°C).

Heat index

For most parts of June, the heat index is computed to be a sweltering 95°F (35°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

The average relative humidity in June is 76%.

Rainfall

In Carterville, in June, it is raining for 13.3 days, with typically 2.13" (54mm) of accumulated precipitation. In Carterville, Illinois, during the entire year, the rain falls for 137.6 days and collects up to 23.03" (585mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The month with the longest days is June, with an average of 14h and 42min of daylight.
On the first day of the month, sunrise is at 5:35 am and sunset at 8:12 pm. On the last day of June, sunrise is at 5:38 am and sunset at 8:22 pm CDT.

Sunshine

The months with the most sunshine are June and July, 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 threat to health from unsafe exposure to UV radiation for the average person.
Note: The UV index of 6 during June leads to these advisories:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Updated: Jul 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in June?

The high-temperature during June is 84.7°F (29.3°C) and the low-temperature is 66.4°F (19.1°C). In June, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is computed to be 95°F (35°C).

What is the average humidity in June?

In Carterville, the average relative humidity in June is 76%.

How much does it rain in June?

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

When it does not snow?

May through September are months without snowfall.

When are the longest days?

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

What is the average length of the day in June?

The average day length in June in Carterville is 14h and 44min.

When is the sunrise / sunset in June?

In June, on the first day of the month, sunrise is at 5:35 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:22 pm CDT.

What is the month with the most sunshine?

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

How many hours of sunshine does Carterville have in June?

In June, the average sunshine duration is 10.5h.

When is the highest UV index?

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

How high is the UV index in June?

In Carterville, the average daily maximum UV index in June is 6. A UV Index estimate of 6 to 7 represents a high health risk 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
Carterville, IL

Average temperature in June - Carterville, 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
Carterville, IL

Average pressure in June - Carterville, 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
Carterville, IL

Average wind speed in June - Carterville, 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
Carterville, IL

Average humidity in June - Carterville, 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
Carterville, IL

Average rainfall in June - Carterville, 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
Carterville, IL

Average rainfall days in June - Carterville, 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
Carterville, IL

Average snowfall in June - Carterville, 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
Carterville, IL

Average snowfall days in June - Carterville, 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
Carterville, IL

Average daylight in June / Average sunshine in June - Carterville, 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
Carterville, IL

Average sunshine days in June - Carterville, 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
Carterville, IL

Average UV index in June - Carterville, 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
Carterville, IL

Average cloud cover in June - Carterville, 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
Carterville, IL

Average visibility in June - Carterville, 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).

Carterville, Illinois, USA

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