June weather forecast
Norman, OK

Summer officially sets in Norman during June, reflecting the classic characteristics of the season. June’s weather sees a significant increase in temperatures, with maxima soaring to an average of 88.3°F (31.3°C). The rainfall drops to 2.17" (55mm), reflecting a decrease from May's high rainfall figures. As compared to May, June is decidedly hotter and drier. With longer daylight hours of up to 14.5 hours, outdoor activities become more popular.

Temperature

June's arrival is marked by an increase in the average high-temperature, moving from a warm 77.7°F (25.4°C) in May to a tropical 88.3°F (31.3°C). An average temperature of 69.8°F (21°C) is recorded in Norman during the nights in June.

Heat index

The average heat index in June is estimated at a torrid 100.4°F (38°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. 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 highly important for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In Norman, the average relative humidity in June is 70%.

Rainfall

In Norman, in June, during 10.8 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. Throughout the year, in Norman, there are 121.1 rainfall days, and 24.8" (630mm) of precipitation is accumulated.

Snowfall

April 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 June, sunrise is at 6:16 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 8:48 pm CDT.

Sunshine

The average sunshine in June is 10.9h.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: In June, a regular UV index of 7 translates into these guidelines:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.