June weather forecastCaseyville, IL
June
Weather in June
The first month of the summer, June, is also a moderately hot month in Caseyville, Illinois, with an average temperature varying between 83.3°F (28.5°C) and 66.6°F (19.2°C).Temperature
A soft shift in the average high-temperature is noticeable in June, transitioning from a moderately hot 74.5°F (23.6°C) in May to a still warm 83.3°F (28.5°C). Nighttime temperatures in June average to an enjoyable 66.6°F (19.2°C).Heat index
Throughout June, the heat index is estimated at a hot 91.4°F (33°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Humidity
The average relative humidity in June is 77%.Rainfall
In Caseyville, during June, the rain falls for 15.5 days and regularly aggregates up to 3.9" (99mm) of precipitation. Throughout the year, there are 149.9 rainfall days, and 33.94" (862mm) of precipitation is accumulated.Snowfall
April through August and October are months without snowfall.Daylight
With an average of 14h and 48min of daylight, June has the longest days of the year.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.
Sunshine
June has the most sunshine of the year, with an average of 10.5h of sunshine.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Caseyville. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: An average maximum UV index of 6 in June leads to these recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in June /
Average sunshine in June
Caseyville, IL
- Average daylight in June: 14h and 48min
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 30min
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).
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).
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).
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).
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).
