June weather forecast and climate
Austin, TX

June, the first month of the summer, in Austin, is a hot month, with average temperature fluctuating between 72.1°F (22.3°C) and 91.2°F (32.9°C).

Temperature

In June, the average high-temperature marginally rises, from a moderately hot 83.8°F (28.8°C) in May, to a tropical 91.2°F (32.9°C). The average low-temperature, in Austin, is 72.1°F (22.3°C).

Heat index

The average heat index is calculated to a blistering 110.5°F (43.6°C). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, clothing, pregnancy). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Austin, Texas, the average relative humidity is 71%.

Rainfall

In Austin, during June, the rain falls for 13.3 days and regularly aggregates up to 1.81" (46mm) of precipitation. In Austin, during the entire year, the rain falls for 142.7 days and collects up to 21.5" (546mm) of precipitation.

Snowfall

March through December are months without snowfall.

Daylight

With an average of 14.1h of daylight, June has the longest days of the year in Austin.

Sunshine

In June, the average sunshine in Austin is 9.4h.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index in Austin. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 7 in June transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.