June weather forecast
Simpsonville, SC

June in Simpsonville, South Carolina marks the official start of summer with the highest daylight hours of the whole year, around 14.5. Compared to May, the temperature further increases, prompting people to beat the heat at swimming pools and water parks. Despite the ascending temperatures, June is also characterized by its moderate humidity levels, preventing the weather from becoming too oppressive. This month is all about enjoying the longest days of the year under clear blue skies. Outdoor activities and water sports are at their peak during June.

Temperature

As Simpsonville transitions into June, a marginal rise in the average high-temperature is observed, moving from a warm 79.3°F (26.3°C) in May to a tropical 87.6°F (30.9°C). Simpsonville undergoes a major shift from daytime highs, averaging an enjoyable 65.8°F (18.8°C) during the night in June.

Heat index

The heat index value for June is calculated to be a sweltering 100.4°F (38°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

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

Rainfall

In June, the rain falls for 15.8 days. Throughout June, 2.68" (68mm) of precipitation is accumulated. In Simpsonville, during the entire year, the rain falls for 163.9 days and collects up to 35.51" (902mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

June has the longest days of the year, with an average of 14h and 24min of daylight.
On the first day of June in Simpsonville, sunrise is at 6:16 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 8:46 pm EDT.

Sunshine

In June, the average sunshine is 10.9h.

UV index

The months with the highest UV index in Simpsonville are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: A daily high UV index of 6 in June leads to these guidelines:
Shield from overexposure. Defense against sun-related harm is required. 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. Opt for tightly woven and loose clothing to enhance protection from the Sun.