June weather forecast
Duncan, OK

June signifies the onset of summer in Duncan, Oklahoma. It brings with it longer days and soaring temperatures. Sun worshippers enjoy this month, which heralds in the highest levels of daylight at 14.4 hours. Sunshine is generous, bathing the city in approximately 10.7 hours of sunny glory. The temperature gradient is steep with a maximum temperature soaring to 89.8°F (32.1°C) and minimum averages settling around a warm 70.7°F (21.5°C).

Temperature

As May transitions into June, Duncan sees a rise in the average high-temperature, moving from a warm 79.3°F (26.3°C) to a hot 89.8°F (32.1°C). Duncan anticipates an average minimum temperature of 70.7°F (21.5°C) in the month of June.

Heat index

During June, the heat index is computed to be a scorching 104°F (40°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In Duncan, the average relative humidity in June is 67%.

Rainfall

In June, the rain falls for 10 days. Throughout June, 1.89" (48mm) of precipitation is accumulated. In Duncan, during the entire year, the rain falls for 113.4 days and collects up to 24.61" (625mm) of precipitation.

Snowfall

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

Daylight

The month with the longest days in Duncan is June, with an average of 14h and 24min of daylight.
On the first day of the month, sunrise is at 6:20 am and sunset at 8:39 pm. On the last day of June, sunrise is at 6:22 am and sunset at 8:48 pm CDT.

Sunshine

In June, the average sunshine is 10.7h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 7 during June translates into the following directions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.