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

The start of June in Duncan brings a rise in the average high-temperature, moving from a warm 79.3°F (26.3°C) in May to a tropical 89.8°F (32.1°C). In the month of June, the average low-temperature in Duncan usually rests at a pleasant 70.7°F (21.5°C).

Heat index

In June, the average heat index is estimated at a blisteringly hot 104°F (40°C). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. 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 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In June, the average relative humidity is 67%.

Rainfall

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

Snowfall

May through October are months without snowfall in Duncan.

Daylight

June has the longest days of the year, 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

The average sunshine in June is 10.7h.

UV index

The months with the highest UV index in Duncan are June through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A typical high UV index of 7 in June suggests the following recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.