June weather forecast
Lewisville, TX

June is a true representation of sultry Texas summers with temperatures reaching a scorching daily average high of 91.2°F (32.9°C). Sun-soaked days are common, averaging a daily sunshine duration of around 10.2 hours. While some clouds might cast their shadows occasionally, expectations of frequent and long sunny days are typically met in June. As July approaches, temperatures continue to rise, leading to the hottest period of the year.

Temperature

June brings a temperature increase, with average high-temperatures moving from May's moderately hot 82.2°F (27.9°C) to a hot 91.2°F (32.9°C). In Lewisville, the average low-temperature during the month of June is a warm 73.9°F (23.3°C).

Heat index

June's average heat index is computed to be a scorching 107.6°F (42°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
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. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

In Lewisville, the average relative humidity in June is 66%.

Rainfall

In Lewisville, in June, it is raining for 11.7 days, with typically 2.76" (70mm) of accumulated precipitation. In Lewisville, Texas, during the entire year, the rain falls for 132.1 days and collects up to 29.09" (739mm) of precipitation.

Snowfall

In Lewisville, snow does not fall in April through October.

Daylight

The month with the longest days is June, with an average of 14h and 18min of daylight.
On the first day of June, sunrise is at 6:19 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 8:40 pm CDT.

Sunshine

In June, the average sunshine is 10.2h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.
Note: A maximum high daily UV index of 7 during June translates into the following directions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.