June weather forecast
Williamsburg, FL

The first month of the summer, June, is still a tropical month in Williamsburg, Florida, with temperature in the range of an average high of 89.2°F (31.8°C) and an average low of 74.3°F (23.5°C).

Temperature

June's arrival brings an average high-temperature of a still tropical 89.2°F (31.8°C), slightly deviating from May's 86.5°F (30.3°C). During the month of June, the temperature in Williamsburg falls to an average of 74.3°F (23.5°C).

Heat index

The average heat index in June is calculated to be an extremely hot 107.6°F (42°C). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In Williamsburg, the average relative humidity in June is 76%.

Rainfall

In Williamsburg, in June, it is raining for 16.8 days, with typically 1.42" (36mm) of accumulated precipitation. Throughout the year, in Williamsburg, there are 126.6 rainfall days, and 9.06" (230mm) of precipitation is accumulated.

Daylight

The month with the longest days is June, with an average of 13h and 54min of daylight.
On the first day of the month, sunrise is at 6:28 am and sunset at 8:19 pm. On the last day of June, sunrise is at 6:31 am and sunset at 8:27 pm EDT.

Sunshine

In June, the average sunshine in Williamsburg is 10.2h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Williamsburg. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 7 during June translates into the following recommendations:
Fend off overexposure. Sun protection is vital. 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.