June weather forecast
Johntown, TN

The first month of the summer, June, is also a moderately hot month in Johntown, Tennessee, with an average temperature fluctuating between 64.8°F (18.2°C) and 84.9°F (29.4°C).

Temperature

With the onset of June, Johntown experiences a subtle temperature shift, with the average high-temperature moving from 76.8°F (24.9°C) in May to a still moderately hot 84.9°F (29.4°C). Johntown witnesses an average low-temperature of 64.8°F (18.2°C) throughout the month of June.

Heat index

In June, the average heat index is estimated at a torrid 95°F (35°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

The average relative humidity in June in Johntown, Tennessee, is 77%.

Rainfall

In Johntown, in June, during 17.2 rainfall days, 3.98" (101mm) of precipitation is typically accumulated. Throughout the year, in Johntown, there are 178.1 rainfall days, and 37.99" (965mm) of precipitation is accumulated.

Snowfall

In Johntown, Tennessee, snow does not fall in May through September.

Daylight

The month with the longest days in Johntown, Tennessee, is June, with an average of 14h and 36min of daylight.
On the first day of the month, sunrise is at 5:27 am and sunset at 7:56 pm. On the last day of June, in Johntown, sunrise is at 5:30 am and sunset at 8:06 pm CDT.

Sunshine

June has the most sunshine of the year in Johntown, with an average of 10.3h of sunshine.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Johntown. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In June, the maximum UV index of 6 suggests these recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.