July weather forecast
Duncan, OK

July is the heart of summer in Duncan, with temperatures often hitting their peak. The heat does not go unnoticed. July bears the crown of the hottest month, with scorching average highs and lows hovering around 94.6°F (34.8°C) and 73.9°F (23.3°C) respectively. This is also noticeable in the UV index that hits 7, the highest value for the year. Despite the intense heat, July still offers generous amounts of sunshine and extended daylight hours, ideal for outdoor summer activities.

Temperature

With the transition into July, Duncan notes an average high-temperature of a still hot 94.6°F (34.8°C), closely resembling June. An average low-temperature of 73.9°F (23.3°C) is common in Duncan, Oklahoma, during the nights of July.

Heat index

In July, the average heat index is computed to be a scorching 111.2°F (44°C). Stay mindful: Heat exhaustion and heat cramps are likely. Heatstroke could follow extended physical effort.
Remember that heat index calculations are made for conditions in the shade with light wind. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

The average relative humidity in July is 60%.

Rainfall

In Duncan, in July, it is raining for 11.3 days, with typically 2.17" (55mm) of accumulated precipitation. Throughout the year, there are 113.4 rainfall days, and 24.61" (625mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Duncan, the average length of the day in July is 14h and 12min.
On the first day of July, sunrise is at 6:23 am and sunset at 8:48 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 8:34 pm CDT.

Sunshine

With an average of 11.1h of sunshine, July has the most sunshine of the year in Duncan.

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 radiation for average individuals.
Note: A daily maximum UV index of 7 in July translates into the following instructions:
Shield from overexposure. Defense against sun-related harm is required. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.