June weather forecast
Oklahoma City, OK

June sets the stage for summer in Oklahoma City with a surge in temperature, marking hot and humid conditions. This month also marks a dip in precipitation, giving way to typically sunny days and inviting outdoor excursions. June calls for comfortable seasonal clothing to cope with the sweltering heat. The long days, coupled with reduced rainfall, set up ideal conditions for enjoying the city's various summer activities and escapades. In terms of temperature, a range from 88.9°F (31.6°C) to 70.3°F (21.3°C) is observed, bringing the true summer heat to Oklahoma City.

Temperature

The transition to June introduces an increase in the average high-temperature in Oklahoma City, shifting from a warm 77.9°F (25.5°C) in May to a tropical 88.9°F (31.6°C). Throughout June, a steady low-temperature average of 70.3°F (21.3°C) is noted.

Heat index

For most parts of June, the heat index is estimated at a sweltering 102.2°F (39°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In June, the average relative humidity in Oklahoma City is 68%.

Rainfall

In Oklahoma City, in June, during 10.6 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. Throughout the year, in Oklahoma City, there are 121 rainfall days, and 24.96" (634mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

The month with the longest days is June, with an average of 14h and 30min of daylight.
On the first day of the month, sunrise is at 6:15 am and sunset at 8:40 pm. On the last day of June, in Oklahoma City, sunrise is at 6:18 am and sunset at 8:49 pm CDT.

Sunshine

The average sunshine in June in Oklahoma City is 10.9h.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index in Oklahoma City. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 7 in June, converts into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.