June weather forecastChattanooga, TN

Weather in June

June highlights the transition into Chattanooga’s summer, with noticeably longer daylight hours and warmer temperatures. In addition to the warmer weather, the sunny conditions, with an extended 14.5 hours of daylight, make June one of the most favored months for outdoor activities. June serves as a gateway to the hottest weather conditions experienced in the city. However, the humidity rate slightly dips this month, providing a slight relief.

Temperature

June signals a minor shift in the average high-temperature, moving from May's 78.1°F (25.6°C) to a still moderately hot 85.6°F (29.8°C). June nights see a notable contrast from daytime highs, with the nighttime temperature averaging at an enjoyable 64°F (17.8°C).

Heat index

June's mean heat index is estimated at a fiery hot 96.8°F (36°C). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

The months with the lowest humidity are June through August, October and November, with an average relative humidity of 75%.

Rainfall

In Chattanooga, in June, during 17.8 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. In Chattanooga, during the entire year, the rain falls for 174.4 days and collects up to 41.14" (1045mm) of precipitation.

Snowfall

In Chattanooga, snow does not fall in May through October.

Daylight

The month with the longest days is June, with an average of 14h and 30min of daylight.
On the first day of June, sunrise is at 6:28 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 8:59 pm EDT.

Sunshine

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

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average UV index of 6 in June transforms into this advice:
Resist extreme sun exposure. Guarding against solar damage is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Employ a wide-brim hat for potent defense against up to 50% of UV rays.