June weather forecast
McAlester, OK

June marks a significant change towards summer, with a notable rise in day temperatures. The city of McAlester begins to bask in the summer sun in June, with dry spells becoming more frequent. Interestingly, the rise in warmth and daylight hours coincides with a dip in rainfall, making the city less wet than in May. This sets the tone for the typical summer weather that is to follow. It makes it a prelude to the heart of the summer that lies ahead.

Temperature

June sees a temperature increase, moving from a moderately hot 77.7°F (25.4°C) in May to a tropical 88.3°F (31.3°C). McAlester, in June, witnesses an average low-temperature of 69.4°F (20.8°C).

Heat index

The heat index value during June is estimated at a scorching 104°F (40°C). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In June, the average relative humidity is 74%.

Rainfall

In McAlester, in June, during 10.9 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. In McAlester, during the entire year, the rain falls for 138.1 days and collects up to 30.71" (780mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The month with the longest days in McAlester, Oklahoma, is June, with an average of 14h and 30min of daylight.
On the first day of June in McAlester, sunrise is at 6:10 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:40 pm CDT.

Sunshine

In McAlester, the average sunshine in June is 10.5h.

UV index

June through August, 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 exposure to the Sun's UV rays for average individuals.
Note: The UV index of 7 during June leads to these advisories:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.