June weather forecast
Port Saint John, FL

June, the first month of the summer in Port Saint John, is a tropical month, with temperature in the range of an average low of 75.7°F (24.3°C) and an average high of 87.1°F (30.6°C).

Temperature

The arrival of June brings an average high-temperature of a hot 87.1°F (30.6°C), closely following the temperature pattern of May. The temperature in Port Saint John, Florida, dips to an average of 75.7°F (24.3°C) during June nights.

Heat index

The heat index value for June is appraised at a very hot 102.2°F (39°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. 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 body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

The average relative humidity in June in Port Saint John is 78%.

Rainfall

In June, in Port Saint John, the rain falls for 22.8 days. Throughout June, 5.28" (134mm) of precipitation is accumulated. In Port Saint John, Florida, during the entire year, the rain falls for 202 days and collects up to 40.2" (1021mm) of precipitation.

Daylight

With an average of 13h and 54min of daylight, June has the longest days of the year.
On the first day of June in Port Saint John, sunrise is at 6:25 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 8:24 pm EDT.

Sunshine

In June, the average sunshine in Port Saint John is 10.6h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 7 during June translates into the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.