June weather forecast
Irmo, SC

June is the marker of summer's arrival in Irmo with temperatures soaring and causing a noticeable change in the climate. It is during this month that people start hitting the beach, having picnics, and generally spending more time outdoors. The rainfall decreases a bit to 2.24" (57mm), complementing the increase in temperature. Despite the heat, the clear skies and longer sunshine hours promise exciting activities under the sun. With the peak summer month of July around the corner, anticipate even higher temperatures and outdoor festivities.

Temperature

June's onset witnesses a minor shift in the average high-temperature, moving from a moderately hot 81°F (27.2°C) in May to a tropical 88.3°F (31.3°C). During the nights in June, an average low-temperature of 69.6°F (20.9°C) is observed.

Heat index

The heat index in June is estimated at a very hot 102.2°F (39°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In June, the average relative humidity in Irmo is 71%.

Rainfall

In June, the rain falls for 14 days. Throughout June, 2.24" (57mm) of precipitation is accumulated. Throughout the year, in Irmo, South Carolina, there are 147.8 rainfall days, and 28.23" (717mm) of precipitation is accumulated.

Snowfall

In Irmo, snow does not fall in April through November.

Daylight

June has the longest days of the year in Irmo, with an average of 14h and 24min of daylight.
On the first day of June in Irmo, sunrise is at 6:14 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 8:40 pm EDT.

Sunshine

In June, the average sunshine is 10.8h.

UV index

June and July, with an average maximum UV index of 7, are months with the highest UV index in Irmo. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In June, a daily UV index of 7 turns into the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.