June weather forecast
Willisville, IL

The first month of the summer, June, is also a moderately hot month in Willisville, Illinois, with temperature in the range of an average high of 84.7°F (29.3°C) and an average low of 66.6°F (19.2°C).

Temperature

As Willisville enters June, the average high-temperature increases from the a moderately hot 75.7°F (24.3°C) of May to a still warm 84.7°F (29.3°C). June in Willisville, Illinois, witnesses an average low-temperature hovering around a comfortable 66.6°F (19.2°C).

Heat index

The heat index for June is calculated to be a sweltering 95°F (35°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

The average relative humidity in June is 76%.

Rainfall

In June, in Willisville, the rain falls for 16.5 days. Throughout June, 4.02" (102mm) of precipitation is accumulated. Throughout the year, in Willisville, Illinois, there are 159.4 rainfall days, and 37.2" (945mm) of precipitation is accumulated.

Snowfall

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

Daylight

With an average of 14h and 48min of daylight, June has the longest days of the year in Willisville, Illinois.
On the first day of June, sunrise is at 5:37 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:24 pm CDT.

Sunshine

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

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 6 in June transforms into the following instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.