June weather forecast
Stillwater, OK

June in Stillwater marks the arrival of the summer season, notable for its high temperatures and lengthy daylight hours. The high heat of June brings an increased demand for cooling and hydration. Following May, June is warmer and less rainy but sees longer daylight hours. This month experiences a significant temperature increase, reaching an average maximum of 88°F (31.1°C).

Temperature

A rise in the average high-temperature is observed in Stillwater during June, moving from a moderately hot 77°F (25°C) in May to a tropical 88°F (31.1°C). Stillwater, in June, experiences an average temperature of 69.8°F (21°C) at night.

Heat index

For most parts of June, the heat index is appraised at a very hot 100.4°F (38°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Consider that heat index readings are for situations in the shade and light wind. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful 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.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

The average relative humidity in June in Stillwater is 70%.

Rainfall

In Stillwater, in June, it is raining for 11.2 days, with typically 1.89" (48mm) of accumulated precipitation. Throughout the year, there are 121.4 rainfall days, and 25.28" (642mm) 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 36min of daylight.
On the first day of the month, sunrise is at 6:12 am and sunset at 8:40 pm. On the last day of June, sunrise is at 6:14 am and sunset at 8:49 pm CDT.

Sunshine

In Stillwater, the average sunshine in June is 11h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 7 during June translates into the following directions:
Ward off overexposure. Defence against solar harm is crucial. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.