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 in Irmo brings a slight increase in the average high-temperature, progressing from a warm 81°F (27.2°C) in May to a hot 88.3°F (31.3°C). Irmo encounters an average low-temperature of 69.6°F (20.9°C) during June nights.

Heat index

The heat index value for June is evaluated at a fiery hot 102.2°F (39°C). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. 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. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In June, the average relative humidity is 71%.

Rainfall

In June, the rain falls for 14 days. Throughout June, 2.24" (57mm) of precipitation is accumulated. In Irmo, during the entire year, the rain falls for 147.8 days and collects up to 28.23" (717mm) of precipitation.

Snowfall

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

Daylight

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

Sunshine

In June, the average sunshine is 10.8h.

UV index

The months with the highest UV index are June and July, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In June, the average maximum UV index of 7 translates into the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.